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1 <html>
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2
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3 <!-- Mirrored from users.eniinternet.com/bradleym/Ch1.html by HTTrack Website Copier/3.x [XR&CO'2014], Sun, 06 Nov 2022 06:53:55 GMT -->
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4 <head>
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5 <title> Improve Fast In Go - Milton N. Bradley</title>
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6 </head>
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7 <link rel="stylesheet" href="style2.css">
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8 <body bgcolor="#E0FFFF">
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9 <a name="top">
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10
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11 <center><br><br>
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12 <font class="booktitle"><font size=+4>
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13 Improve <I>Fast</I> In Go
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14 </font>
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15 <br><br>
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16
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17 <h1>
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18 <font class="chaptitle"><font size=+2>
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19 &copy; Milton N. Bradley 2008
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20 </font>
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21 <hr></h1></center>
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22 <br><br>
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23
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24
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25 <center><a name="Chapter1">
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26 <font class="chaptitle"><font size=+2>
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27 <strong>Chapter 1 - The Role Of Fighting In Go</strong>
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28 </font><br>
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29
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30 </center>
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31 <font size=+0>
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32 <br><br>
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33 The financial investment model is an appropriate, if rather grossly simplified, way to grasp the essence of a Go game. Think of the stones you play as your investment capital,
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34 and the resulting territory you acquire as the return on that investment. It’s well established that a prudent financial strategy invariably requires a judicious balance between
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35 long and short term investments. It’s much the same in a Go game, where the balance that must be struck is between profit (short term) and such relative intangibles as thickness
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36 and attack (long term). In this balancing process, it’s often feasible to cede even a large temporary lead in solid profit to the opponent, in the expectation of later recouping.
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37 But <I>whatever the chosen strategic mix in any given game, at game’s end the sole determinant of victory or defeat is the amount of empty board space controlled by each side.</I><br><br>
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38 Capturing more stones than the opponent, or even capturing any opposing stones at all, is essentially irrelevant except as it contributes toward that goal.<br><br>
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39 Given that fact, it might seem that victory should be achievable through the simple walling off of areas by both sides. But that’s not true! Even if that primitive strategy (pejoratively
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40 termed “ground gaining Go”) could be successfully followed initially, the finite size of the Go board coupled with the fact that both sides are seeking to gain control of the same limited
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41 amount of space means that conflict is ultimately inevitable. And that’s especially true when one side or the other realizes it has fallen behind in acquiring territory and can only recoup
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42 by “stealing” a portion of what the opponent has claimed. So in well played Go games the confrontations usually begin early, and then are almost invariably crucial in determining the final outcome.<br><br>
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43 As a result, perhaps the major key to making appropriate strategic decisions lies in understanding that:<br><br>
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44
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45 <center>
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46 <br><table class="txtbox">
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47 <tr>
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48 <td width="30">&nbsp;</td>
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49 <td align="middle" valign="top">
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50 <br>
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51 <font class="txtboxbig">
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52 Go Is A Fighting Game
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53 </font>
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54
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55 <br><br>
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56 </td>
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57 <td width="30">&nbsp;</td>
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58 </tr>
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59 </table><br><br>
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60 </center>
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61
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62 This should distinctly not be interpreted as implying that fighting is all there is to Go, because nothing could be further from the truth. Rather, fighting is perhaps best understood as the
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63 essence around which all of the many subtleties and complexities of Go tactics and strategy coalesce to produce the wonderful game which has intrigued humanity for millennia.<br><br>
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64
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65 <strong>The Basic Principles Of Fighting</strong>
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66
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67
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68 <center>
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69 <br><table class="txtbox">
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70 <tr>
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71 <td width="30">&nbsp;</td>
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72 <td align="middle" valign="top">
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73 <br>
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74 <font class="txtboxbig">
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75 The Life Or Death Of Groups<br>
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76
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77 Is The Central Issue In Fighting
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78 </font>
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79 <br><br>
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80 </td>
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81 <td width="30">&nbsp;</td>
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82 </tr>
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83 </table><br><br>
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84 </center>
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85
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86 Although most high level Go games are decided as a result of fights, those fights are anything but random, mindless conflict for its own sake! Quite the contrary. Fights between competent
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87 opponents occur only because both sides are unavoidably competing for control of the limited assets of space, shape and connectivity available on the 361 intersection Go board.<br><br>
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88
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89 <center>
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90 <br><table class="txtbox">
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91 <tr>
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92 <td width="30">&nbsp;</td>
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93 <td align="middle" valign="top">
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94 <br>
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95 <font class="txtboxsmall">
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96 Only Fights Involving Important Groups<br>
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97
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98 Are Likely To Be Productive
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99 </font>
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100 <br><br>
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101 </td>
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102 <td width="30">&nbsp;</td>
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103 </tr>
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104 </table><br><br>
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105 </center>
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106
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107 How to identify important groups is the subject of Chapter 2.<br><br>
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108
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109 <center>
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110 <br><table class="txtbox">
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111 <tr>
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112 <td width="30">&nbsp;</td>
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113 <td align="middle" valign="top">
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114 <br>
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115 <font class="txtboxsmall">
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116 Only Fights Against Weak Groups<br>
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117
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118 Are Likely To Be Successful
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119 </font>
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120 <br><br>
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121 </td>
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122 <td width="30">&nbsp;</td>
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123 </tr>
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124 </table><br><br>
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125 </center>
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126
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127 How to identify weak groups and determine when and why they are vulnerable is the subject of Chapters 3 and 4.<br><br>
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128 When attacking vulnerable groups is most likely to be successful is the subject of Chapters 5 - 7.<br><br>
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129
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130 Rather<br><br>
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131
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132 <center>
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133 <br><table class="txtbox">
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134 <tr>
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135 <td width="30">&nbsp;</td>
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136 <td align="middle" valign="top">
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137 <br>
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138
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139 <font class="txtboxsmall">
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140 Gratuitous Fights For Their Own Sake<br>
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141 Are Almost Always A Mistake
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142 </font>
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143 <br><br>
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144 </td>
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145 <td width="30">&nbsp;</td>
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146 </tr>
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147 </table><br><br>
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148
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149 </center>
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150
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151 <center>
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152 <br><table class="txtbox">
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153 <tr>
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154 <td width="30">&nbsp;</td>
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155 <td align="middle" valign="top">
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156 <br>
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157 <font class="txtboxsmall">
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158 Fight Only In Pursuit Of <br>
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159
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160 Strategically Important Objectives<br><br>
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161 And Only When And To The Extent<br>
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162 Absolutely Necessary
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163 </font>
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164 <br><br>
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165 </td>
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166 <td width="30">&nbsp;</td>
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167 </tr>
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168
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169 </table><br><br>
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170 </center>
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171
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172 <table>
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173 <tr>
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174 <td align="left" valign="top">
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175 <img src="C1D1.jpg" border="1">
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176
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177 </td>
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178
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179 <td width="10">&nbsp;</td>
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180
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181 <td valign="top" align="left">
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182 <br><br><br><br><br>
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183 <strong>Diagram 1</strong> In this game between a 5D and a 7D, the atari of B1 on the marked White stone has forced the connection of W2, with (small) advantage to Black
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184 because B1 not only separates White and is potentially useful, but also because W2 only adds insignificantly to White’s already thick formation.<br><br>
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185 The key question now is how Black should best continue.<br><br>
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186
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187 </td>
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188 </tr>
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189 </table>
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190
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191 <br><br>
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192
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193 <table>
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194 <tr>
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195 <td align="left" valign="top">
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196 <img src="C1D2.jpg" border="1">
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197
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198 </td>
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199
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200 <td width="10">&nbsp;</td>
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201 <td valign="top" align="left">
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202
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203
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204 <strong>Diagram 2</strong> The exchange of the atari of B1 for W2 on the left has created useful Aji for Black to exploit at the proper moment, but continuing there immediately
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205 to support/utilize the 2 Black stones would only prematurely start a fight that would almost certainly be to Black’s detriment!<br><br>
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206 As things stand, Black’s absolutely essential play is B3!<br><br> This begins to sketch out a Black corner in the lower right while partially neutralizing the White thickness,
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207 and also prevents the excellent extension/kakari of W“a”, and leaves the decision regarding what to do with the 2 Black stones on the left for later. (In the actual game, the proper
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208 moment to support those stones never arrived!)
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209 <br><br>
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210
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211 </td>
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212 </tr>
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213 </table>
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214 <br><br>
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215
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216 <table>
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217 <tr>
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218 <td align="left" valign="top">
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219 <img src="C1D3.jpg" border="1">
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220
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221 </td>
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222
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223 <td width="10">&nbsp;</td>
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224 <td valign="top" align="left">
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225 <br><br><br><br><br><br><br><br><br>
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226
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227 <strong>Diagram 3</strong> In this game between two 7 D’s, White has retained Sente, so it’s his choice as to how to proceed from this point forward.<br><br>
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228 Invading the wide extension between B1 and B21 seems inviting. But is it really? And if it’s not, what would be better? And why?
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229 <br><br>
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230
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231 </td>
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232 </tr>
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233 </table>
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234 <br><br>
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235
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236 <table>
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237
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238 <tr>
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239 <td align="left" valign="top">
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240 <img src="C1D4.jpg" border="1">
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241
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242 </td>
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243
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244 <td width="10">&nbsp;</td>
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245 <td valign="top" align="left">
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246 <br><br><br><br><br>
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247 <strong>Diagram 4</strong> This is the sort of position in which it’s tempting to start a fight by invading with W2! Although that might conceivably succeed,
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248 the 7D who played White in this game thought better of it. He instead opted for this calm development, which had the advantage of taking no unnecessary risks.
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249 Its detriment is that it yielded him only a minuscule overall plus.<br><br>
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250
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251 Caution! There is sometimes no reasonable alternative to initiating a fight when you’ve fallen behind, and less aggressive play is unlikely to reverse the game’s
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252 losing trend! But other than in such exceptional circumstances, avoiding gratuitous and/or potentially dangerous fights is usually sound policy.<br><br>
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253 How to Distinguish between vital fights and those that aren’t is one of the major subjects of this book, so, hopefully, that important distinction will be much
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254 clearer after you’ve read it all.<br><br>
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255
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256
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257 </td>
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258 </tr>
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259 </table>
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260 <br><br>
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261
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262 <strong>Fighting Guidelines:</strong>
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263
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264 In a fencing bout, every legal touch has the same value. So when the opponent thrusts, a fencer’s first response must be to parry! Only then does it become feasible to initiate an aggressive counter action.
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265 In a boxing match, every legal blow has the same point value to the judges, but more effective blows can not only steal the initiative from the opponent but can also serve to wear him down so that both his
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266 attack and defense become less effective. Equally important, they can also serve to instantly end the bout via a knockout!<br><br>
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267 And it’s much the same in Go. A move by the opponent which intends to seize Sente by making a threat that you can’t afford to ignore may be defended against as expected, but it also may be ignored in favor of
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268 a threat of one’s own which is in fact more serious. In each case, deciding what’s appropriate strategically and then achieving their desires requires accurate positional appraisal followed by precise execution
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269 by both sides, so in the final analysis a player’s arsenal of tactical skills is the foundation upon which his strategy is both built and realized.<br><br>
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270 <I>The crucial factor in the conduct of any fight is the realization that each separate group of both White and Black stones must somehow form at least two separate and distinct eyes by the end of the game</I>,
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271 to both remain alive and garner the territory that will count toward a win. So the more separate groups you can force your opponent to establish, the more “free” moves you gain with which to pursue your own objectives.
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272 This is generally true because most moves made by the opponent to secure his own eyes won’t also expand his space or attack your positions!<br><br>
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273 Because it’s easy for a beginner or intermediate in a handicap game to be intimidated by White’s superior skill, it’s also important to remember that<br><br>
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274
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275
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276 <center>
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277 <br><table class="txtbox">
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278
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279 <tr>
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280 <td width="30">&nbsp;</td>
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281 <td align="middle" valign="top">
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282 <br>
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283 <font class="txtboxsmall">
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284 The White Stones Have No Special Powers,<br>
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285 And Share The Same Need<br>
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286 For Eyeshape, Space, and Connectivity<br>
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287 As Black’s<br><br>
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288
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289 </font>
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290
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291 </td>
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292 <td width="30">&nbsp;</td>
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293 </tr>
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294 </table>
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295 </center>
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296 <br><br>
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297 So Black must carefully appraise and then seek to exploit any weaknesses in White’s positions, rather than reflexively playing purely defensively as though the White stones were somehow invulnerable!<br><br>
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298 The following principles provide excellent guidance in most situations. Why they’re generally valid will become clearer when we discuss strong and weak stones in Chapter 3.
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299 <br><br>
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300
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301
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302
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303 <center>
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304 <br><table class="txtbox">
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305 <tr>
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306 <td width="30">&nbsp;</td>
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307 <td align="middle" valign="top">
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308 <br>
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309 <font class="txtboxbig">
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310 To Attack, Play Away.
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311 <br>
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312
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313 </font>
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314 <br>
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315 <font class="txtboxsmall">
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316 (Keep a discreet distance, inhibiting the opponent’s <br>
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317 ability to expand and/or form eyes.)<br><br>
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318 </font>
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319
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320 </td>
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321 <td width="30">&nbsp;</td>
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322
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323 </tr>
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324 </table>
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325 </center>
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326 <br><br>
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327
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328 <strong>The Nature Of Attack</strong><br><br>
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329 An attack uses threats against weak stones to create gains, either locally or elsewhere, which typically take the form of territory (profit), the creation of power/influence, or an attack on another group.<br><br>
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330 Attacking plays will usually elicit a response, but won’t necessarily result in an immediate fight.<br><br>
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331
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332 Attacking scenarios are of almost transcendent importance in playing Go and among the most satisfying to implement, so it will be worth our while to briefly examine their structure and implications here, deferring fuller discussion for later.<br><br>
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333 In a 2008 article in the AGA e-journal, well known American Go teacher Jim Kerwin, 1P, said the following:<br><br>
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334 “The key to attacking is to start by choosing where and what you want to gain. You will find it difficult at first to see a possible gain and how to use attack to get it. The good news is that if you can’t see how to use the weak group to get what you
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335 want, you can afford to wait. The worst case is that the opponent will eventually spend a move to reinforce the group allowing you to play a profit move, so you’re guaranteed something.”<br><br>
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336
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337 This is splendid advice, as might be expected from a Go professional, but I believe that it’s still amenable to modest refinement for the beginners/intermediates who are endeavoring to learn from this book.<br><br>
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338 The relevant issue is the player’s meta-strategy for playing Go in any particular game. When engaged in competition in which winning and rating are the motivation, Kerwin’s conservative strategy of staying within
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339 the confines of the player’s current knowledge/skill base except in desperate circumstances is clearly appropriate. But in playing “casual” Go, especially when expanding your experience base is the dominant motivation, a far more adventurous and aggressive
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340 strategy will usually be more appropriate!<br><br>
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341 Given that such “casual” games will almost necessarily constitute by far the majority of your early playing experience, rather than holding back unless you’re reasonably certain of success as Kerwin suggests, in those games your preferred strategy should be
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342 to assess as best you can, and then, if in your best judgment it seems at all feasible, attack! Then, especially if you later review what happened (or use a service like The Go Teaching Ladder to have a much stronger player point out your errors), by learning
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343 from your mistakes you can maximize your rate of progress.<br><br>
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344
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345
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346 <center>
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347 <br><table class="txtbox">
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348 <tr>
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349 <td width="30">&nbsp;</td>
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350 <td align="middle" valign="top">
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351 <br>
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352 <font class="txtboxbig">
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353 To Defend, Play Close
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354 <br>
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355
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356 </font>
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357 <br>
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358 <font class="txtboxsmall">
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359 (Make contact as a method for creating eyeshape <br>
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360 and/or sealing off eyespace.)<br><br>
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361 </font>
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362
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363 </td>
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364 <td width="30">&nbsp;</td>
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365
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366 </tr>
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367 </table>
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368 </center>
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369 <br><br>
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370
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371 Contact plays will almost invariably result in an immediate fight.<br><br>
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372 In any event<br><br>
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373
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374 <center>
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375
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376 <br><table class="txtbox">
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377 <tr>
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378 <td width="30">&nbsp;</td>
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379 <td align="middle" valign="top">
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380
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381 <br>
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382 <font class="txtboxsmall">
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383 Before You Play Defensively,<br>
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384 Always Seek An Offensive Move<br>
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385
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386 That Also Satisfies Your Objectives<br><br>
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387
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388 <td width="30">&nbsp;</td>
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389
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390 </font>
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391
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392 </td>
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393 <td width="30">&nbsp;</td>
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394 </tr>
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395 </table>
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396 </center>
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397
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398 <br><br>
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399
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400 <center>
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401 <br><table class="txtbox">
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402 <tr>
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403 <td width="30">&nbsp;</td>
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404 <td align="middle" valign="top">
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405
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406
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407 <br>
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408 <font class="txtboxsmall">
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409
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410 FIGHTING CONTINUES UNTIL BOTH SIDES<br>
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411 ARE (at least temporarily) STABLE<br><br>
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412 </font>
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413
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414 </td>
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415 <td width="30">&nbsp;</td>
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416 </tr>
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417 </table>
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418 </center>
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419
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420 <br><br>
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421
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422 This may mean that both sides are safe, that one side’s stones are either unequivocally dead or temporarily abandoned, or that both are still incompletely settled.
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423 In the latter cases, the fight will often resume later, when the appearance of other stones nearby makes it profitable for one side or the other.<br><br>
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424 To see how these principles work in practice, let’s examine a situation that frequently arises in both even and handicap games.<br><br>
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425
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426 <table>
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427 <tr>
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428 <td align="left" valign="top">
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429 <img src="C1D5.jpg" border="1">
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430
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431
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432 </td>
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433
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434 <td width="10">&nbsp;</td>
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435 <td valign="top" align="left">
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436
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437 <strong>Diagram 5</strong> The “Knight’s Move” approach of W1 (or the symmetrical point on the upper side) is the most common way for White to begin operations against the Black 4-4 point stone.<br><br>
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438 Because it’s an attack, it doesn’t make contact with the object of that attack, but instead stays a discreet distance away!<br><br>
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439 When Black is in a position to respond aggressively, the one point squeeze play of B2 is the strongest counterattack, also playing at a discreet distance from its target, and inhibiting W1's ability to expand down the side to make a base there.<br><br>
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440
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441 Feasible but milder squeeze plays instead of B2 which may be globally preferable in some situations are “a” thru “d”, while “e” is sometimes chosen when Black feels the top and/or center are more important than the left side.<br><br>
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442 After B2, White has the choice of defending W1 immediately or playing elsewhere. (If he tenukis he will suffer a fairly serious local detriment if Black is first to play locally again, but even then W1 can’t be killed.)<br><br>
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443 How each of White’s feasible responses to B2 can play out is shown next.<br>
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444 <br><br>
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445
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446 </td>
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447 </tr>
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448 </table>
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449
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450 <br><br>
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451
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452 <table>
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453 <tr>
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454 <td align="left" valign="top">
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455 <img src="C1D6.jpg" border="1">
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456
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457 </td>
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458
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459 <td width="10">&nbsp;</td>
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460 <td valign="top" align="left">
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461
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462
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463 <strong>Diagram 6</strong> In response to the pincer attack of B2, one common (but rather passive) continuation is for W3 to dive into the corner.<br><br>
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464 After the Joseki sequence thru W11 (B“a” in place of B10 is sometimes preferable), White is not only alive with profit in the corner, but is also unconfined.<br><br>
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465 In return, W1 is at least temporarily abandoned and Black has thickness. This dynamic “equality” is a fair allocation of assets for both sides for the moment, but not a fully adequate characterization of the situation.<br><br>
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466 The important aspect of this position unaddressed by that assessment is that White’s profit of about 10 points in the corner is almost (but not quite) already assured, but Black’s thickness on the outside must still be sooner
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467 or later converted into an approximately equivalent gain either locally or elsewhere for this trade to be ultimately fair.<br><br>
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468
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469 </td>
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470 </tr>
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471
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472 </table>
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473 <br><br>
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474
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475
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476 <table>
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477 <tr>
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478 <td align="left" valign="top">
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479 <img src="C1D7.jpg" border="1">
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480
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481 </td>
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482
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483 <td width="10">&nbsp;</td>
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484 <td valign="top" align="left">
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485 <br><br>
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486 <strong>Diagram 7</strong> “Abandoning” W1 as in Dia 6 isn’t always globally desirable, and in that case the one point center skip of W3 here is often a good alternative to entering the corner.<br><br>
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487 After that, the calmest sequence is as shown, with White getting strong center influence in return for Black’s sketching out corner territory. (The contact play of B6 helps defend the corner territory in Sente by threatening to
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488 connect underneath to B2 by continuing at 7, thereby inducing W7 to prevent that.)<br><br>
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489 After this, with the 3-3 point (“a”) in the corner and “b”, “c”, and “d” all still available for White if and when circumstances make them appropriate, and with the skirt at “e” also still open, the big corner territory is as yet far from securely Black’s!<br><br>
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490
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491 </td>
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492 </tr>
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493 </table>
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494 <br><br>
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495
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496 <table>
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497 <tr>
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498 <td align="left" valign="top">
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499 <img src="C1D8.jpg" border="1">
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500
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501
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502 </td>
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503
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504 <td width="10">&nbsp;</td>
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505 <td valign="top" align="left">
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506 <br><br><br><br><br>
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507 <strong>Diagram 8</strong> It’s also feasible for White to switch W5 in Dia 7 to the “shoulder hit” on B2 shown here, with this common result.<br><br>
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508 B14 prevents a White enclosure, and at least tentatively assures life for the B2-14 group.<br><br>
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509
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510 Then, depending on what’s going on elsewhere, White may play “a” immediately to assure his connectivity (the best way to do that), or tenuki and hope that he’ll be able to get back to consolidate his position here before Black can play to cut him apart.<br><br>
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511 Instead of the aggressive squeeze play of B2 in Dia 5 - 8, Black might feel it preferable to play defensively, so let’s examine next just how differently that will play out.<br><br>
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512
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513 </td>
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514 </tr>
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515 </table>
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516 <br><br>
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517
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518 <table>
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519
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520 <tr>
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521 <td align="left" valign="top">
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522 <img src="C1D9.jpg" border="1">
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523
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524 </td>
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525
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526 <td width="10">&nbsp;</td>
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527 <td valign="top" align="left">
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528 <br>
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529 <strong>Diagram 9</strong> Especially when Black already has the marked stone or one near it in place, instead of squeezing, the attachment of B2 is feasible.<br><br>
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530
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531 As earlier noted, this is not an attack! A contact play like this B2 is actually a defensive move which is intended to enable Black to both “make shape” and take some corner/side territory.<br><br>
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532 Its main detriment is that it also induces White to make shape and territory as shown, thus simplifying the position while also reducing both side’s later options.<br><br>
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533 (There are a number of other feasible Joseki variants beyond these few which give somewhat different results, but those details are outside our present interest and so will not be discussed here.)<br><br>
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534
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535 </td>
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536 </tr>
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537 </table>
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538 <br><br>
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539
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540 <table>
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541 <tr>
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542 <td align="left" valign="top">
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543 <img src="C1D10.jpg" border="1">
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544
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545 </td>
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546
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547 <td width="10">&nbsp;</td>
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548 <td valign="top" align="left">
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549
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550 <strong>Diagram 10</strong> Relevant to this discussion is the “bang against” attachment of B2 here, which, as earlier noted and despite its appearance, is primarily an attack and not a defensive move!<br><br>
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551
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552 Since this is something that seems inconsistent and therefore may be confusing, understanding its rationale is important.<br><br>
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553 The attachment of B2 is most appropriate when the triangled Black stone (or one at “a”) is already in place on the upper side, and is even more effective when (as here) the marked left side star-point stone is also present (as is true in high handicap games).<br><br>
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554 The aim of B2 is to make infeasible an immediate White switch to the 3-3 point in the corner at “b”, as in Dia 8. It does this because if W3 at “b”to “steal” the corner territory, B4 at 3 would give Black excellent eyeshape while severely damaging W1. So most often
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555 W3 is considered necessary.<br><br>
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556
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557 </td>
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558 </tr>
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559 </table>
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560 <br>
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561
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562 Then B4 works perfectly, in conjunction with the triangled upper side star point stone, toward building a large Black territory in the upper left corner and adjacent upper side. (Although as noted in Dia 7, that territory is still far from completely secure, especially
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563 with W“b” still available.)<br><br>
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564 After B4 White needs eyespace for his 2 stones, but the marked Black left side star point stone stands in the way of an ideal extension, leaving only the very short one point skip to W5 as really feasible.<br><br>
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565 Next, B6 prevents a White slide to either “c” or “d” to expand his eyespace, after which W7 is necessary to create the beginnings of some eyespace and shape while fleeing toward the center. B8 is then often best, building Black’s strength and looking toward the lower side.<br><br>
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566 What’s really important here is to recognize the fundamental difference between the almost entirely defensive attachment of B2 in Dia 9 and that of Dia 10, which is primarily (but not entirely) offensive.<br><br>
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567 Once that critical difference is clearly understood, it should then be far easier for you to make the proper decisions and appropriate followup in similar situations that arise in your own games.<br><br>
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568
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569 <br><br>
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570
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571
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572 Whatever the situation<br><br>
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573
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574 <center>
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575 <br><table class="txtbox">
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576 <tr>
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577 <td width="30">&nbsp;</td>
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578 <td align="middle" valign="top">
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579
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580 <br>
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581
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582 <font class="txtboxsmall">
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583 Don’t Act On<br>
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584 The First Plausible Move<br>
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585 That Solves Your Major Problem.<br><br>
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586
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587 <td width="30">&nbsp;</td>
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588
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589 </font>
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590
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591 </td>
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592
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593 <td width="30">&nbsp;</td>
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594 </tr>
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595 </table>
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596 </center>
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597 <br><br>
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598
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599 <center>
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600 <br><table class="txtbox">
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601 <tr>
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602 <td width="30">&nbsp;</td>
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603
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604 <td align="middle" valign="top">
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605
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606 <br>
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607 <font class="txtboxsmall">
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608 Always Look Further For A Better Move,<br>
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609 Especially One Which Also Accomplishes<br>
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610 Other Desirable Goals.<br><br>
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611
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612 <td width="30">&nbsp;</td>
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613
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614
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615 </font>
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616
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617 </td>
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618 <td width="30">&nbsp;</td>
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619 </tr>
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620 </table>
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621 </center>
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622 <br><br>
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623
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624 <table>
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625 <tr>
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626
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627 <td align="left" valign="top">
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628 <img src="C1D11.jpg" border="1">
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629
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630 </td>
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631
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632 <td width="10">&nbsp;</td>
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633 <td valign="top" align="left">
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634 <br><br><br><br>
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635 <strong>Diagram 11</strong> This is a fairly common type of position, in which the central area to the left of the Black stones is still quite open.<br><br>
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636
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637 In most cases, when the marked White stone probes his one point skip Black will want to maintain his connection, and the first step in finding the best way to do this is to identify the feasible alternatives.<br><br>
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638 Please decide on your own candidates before looking at the following diagrams.<br><br>
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639
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640 </td>
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641 </tr>
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642 </table>
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643
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644 <br><br>
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645 <table>
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646
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647 <tr>
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648 <td align="left" valign="top">
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649 <img src="C1D12.jpg" border="1">
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650
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651 </td>
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652
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653 <td width="10">&nbsp;</td>
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654 <td valign="top" align="left">
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655 <br><br><br><br><br><br>
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656 <strong>Diagram 12</strong> Black’s available connection options are marked from “a” to “d”. But which is best?<br><br>
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657
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658 There is no one universally correct answer because the preferred option will depend upon other stones already in place (not shown here) or deemed likely to appear in subsequent play.<br><br>
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659
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660 </td>
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661 </tr>
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662 </table>
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663 <br><br>
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664
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665 <table>
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666 <tr>
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667
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668 <td align="left" valign="top">
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669 <img src="C1D13.jpg" border="1">
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670
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671 </td>
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672
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673 <td width="10">&nbsp;</td>
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674 <td valign="top" align="left">
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675 <br><br><br>
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676 <strong>Diagram 13</strong> The simplistic choice is the hard connection of B1.<br><br>
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677
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678 Although this is the only absolutely secure, unbreakable connection, it’s also the one that creates no shape at all while offering the fewest followup alternatives.<br><br>
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679 Despite these detriments there are situations in which it’s the most desirable option, so it can’t simply be dismissed out of hand. But absent special circumstances that make the other options
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parents:
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680 infeasible and/or Black’s ultra-solid thickness here particularly useful, this is usually the worst choice. So an alert Black will look further.<br><br>
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681
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682 </td>
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683 </tr>
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684 </table>
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685 <br><br>
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686
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687 <table>
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688
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689 <tr>
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690 <td align="left" valign="top">
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691 <img src="C1D14.jpg" border="1">
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692
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693 </td>
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694
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695 <td width="10">&nbsp;</td>
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parents:
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696 <td valign="top" align="left">
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697 <br><br>
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parents:
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698 <strong>Diagram 14</strong> A slightly better alternative, which in certain circumstances may be preferable to the others, is the extension of B1 here.<br><br>
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parents:
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699
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700 This maintains the connection because if W“a’, B“b”, and if then W“c” cuts, the atari of B“d”answers. And if W“e” then extends, B“f” is a Geta that traps the two White cutting stones.<br><br>
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parents:
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701 But instead of pushing at “a”, which obviously doesn’t work, if the position to the left is suitable an alert White might continue with something like W“d”, to induce B“c”, and then follow with
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702 something like W”f”, to leave the entire Black group “floating” without either eyes or shape.br><br>
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703 And that possibility is one of the reasons that this B1 as the way to maintain Black’s connection is not often best.<br><br>
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704 </td>
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705 </tr>
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706 </table>
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707
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708 <br><br>
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709 <table>
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710
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711 <tr>
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712 <td align="left" valign="top">
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713 <img src="C1D15.jpg" border="1">
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714
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715 </td>
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716
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717 <td width="10">&nbsp;</td>
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718 <td valign="top" align="left">
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719 <br><br><br><br>
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parents:
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720 <strong>Diagram 15</strong> A bit more stylish and versatile is B1 here.<br><br>
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721
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722 After this if W “a” pushes into the gap in the Black formation, depending on surrounding circumstances B“b”, “c” or “d” are all sufficient to maintain Black’s connection with good shape.<br><br>
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parents:
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723 But even this usually isn’t best because this B1 doesn’t reach far enough out from his wall.<br><br>
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724
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725 </td>
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726 </tr>
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727 </table>
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728 <br><br>
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729
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730 <table>
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731
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732 <tr>
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733 <td align="left" valign="top">
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734 <img src="C1D16.jpg" border="1">
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735
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736 </td>
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737
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738 <td width="10">&nbsp;</td>
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739 <td valign="top" align="left">
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740
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parents:
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741 <strong>Diagram 16</strong> So after further reflection, the one point skip of B1 here is revealed as the move that best accomplishes all of Black’s objectives!<br><br>
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parents:
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742
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743 After this, if White makes the shape-killing placement at “a”, B “b” connects efficiently because W“a” is now almost trapped.<br><br>
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parents:
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744 After that, playing immediately (as at “c”) to rescue W“a” would only help Black. Not only would he then have a larger White group to attack, but (assuming the relatively open center we noted at the outset)
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parents:
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745 that newly formed White group will probably not seriously threaten Black because those White stones will almost certainly be weaker than the Blacks they are supposedly attacking.<br><br>
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parents:
diff changeset
746 If after B1, instead of W“a” White pushes at “b”, with B“a” the position reverts to Dia 15 after W“a”, B“d’ there.<br><br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
747 After W“a”, B“b”, if White doesn’t extend from “a”, then if and when appropriate, B“c”(or even a more distant Geta) is a further stylish play that assures that W“a”is trapped, almost certainly yielding Black one eye.<br><br>
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parents:
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748
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749 </td>
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750 </tr>
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751
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752 </table>
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753 <br>
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754
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755 <strong>Enclosure</strong><br><br>
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parents:
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756
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parents:
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757 In the big fights that decide the majority of well played games it’s important that each side retain as many options as possible, and key among those options is finding support for both attack and defense from nearby friendly stones.<br><br>
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parents:
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758 Groups which are enclosed not only can’t simply run away from an attack, but are also unable to connect with other friendly stones which might offer help, either to win the fight outright or to at least survive it.<br><br>
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parents:
diff changeset
759 It’s also true that if one side is enclosed it’s almost necessarily disconnected from other friendly groups, and in many (but not all) cases that also means that the opponent is connected.<br><br>
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parents:
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760
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parents:
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761 The result is that when looking at the final position of games which are close enough to count, it will much more often than not be true that the side which has the fewest number of groups (= is best connected!) is the winner!<br><br>
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parents:
diff changeset
762 Perhaps most important of all is the fact that<br><br>
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763
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764 <center>
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765 <br><table class="txtbox">
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766 <tr>
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767 <td width="30">&nbsp;</td>
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768 <td align="middle" valign="top">
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769
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770 <br>
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771
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772 <font class="txtboxbig">
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773 Only Enclosed Groups<br>
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774 Can Be Killed<br><br>
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775 </font>
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776
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777 </td>
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778 <td width="30">&nbsp;</td>
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779 </tr>
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780 </table>
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781
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782 </center>
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parents:
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783 <br><br>
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parents:
diff changeset
784 Therefore<br>
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785 <center>
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786 <br><table class="txtbox">
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787 <tr>
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788 <td width="30">&nbsp;</td>
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789 <td align="middle" valign="top">
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790
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791
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792 <br>
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793 </font>
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794 <font class="txtboxsmall">
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diff changeset
795 To The Extent Feasible<br>
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796 <br>
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parents:
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797 <font class="txtboxbig">
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parents:
diff changeset
798 Avoid Becoming Enclosed<br><br>
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parents:
diff changeset
799 </font>
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parents:
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800
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801
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802 </td>
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803 <td width="30">&nbsp;</td>
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804 </tr>
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805 </table>
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parents:
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806 </center>
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parents:
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807 <br><br>
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parents:
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808 Becoming enclosed almost necessarily imposes a burden that is not infrequently sufficient to swing the balance of the entire game in the opponent’s favor.
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parents:
diff changeset
809 The converse perspective is equally valid, so under most circumstances enclosing the opponent is an excellent strategy. For that reason, understanding the
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parents:
diff changeset
810 principles governing enclosure constitute a major factor in becoming a strong player.<br><br>
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parents:
diff changeset
811
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812
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813 <center>
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814 <br><table class="txtbox">
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815
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816 <tr>
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817 <td width="30">&nbsp;</td>
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818 <td align="middle" valign="top">
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819
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820 <br>
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821 </font>
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822
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823 <font class="txtboxsmall">
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diff changeset
824 To Counter An Enclosure Threat<br>
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diff changeset
825 <br>
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parents:
diff changeset
826
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827 <font class="txtboxbig">
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diff changeset
828 "If In Doubt, Run Out"<br><br>
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diff changeset
829 </font>
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830
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831 </td>
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832 <td width="30">&nbsp;</td>
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833 </tr>
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834 </table>
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835 </center>
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836
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837 <br><br>
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parents:
diff changeset
838
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parents:
diff changeset
839 The rationale is simple. Enclosed stones:<br>
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parents:
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840 &nbsp;&nbsp;&nbsp;- Have no interface with or influence on subsequent play elsewhere on the board.<br>
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parents:
diff changeset
841 &nbsp;&nbsp;&nbsp;- Must be able to make 2 eyes, or die.<br><br>
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parents:
diff changeset
842 Caution! As the board fills up throughout the game, every group will ultimately become enclosed! So the guidelines we discuss here apply primarily during the Fuseki and early middle game. <br><br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
843 It’s also true that all such “rules” of behavior represent simplifications of often quite complex situations, but they are nevertheless quite valuable because in surprisingly many cases they also provide the clues that can allow even beginning players to find
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
844 excellent moves they might otherwise miss.<br><br>
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parents:
diff changeset
845
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846
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847 <table>
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diff changeset
848 <tr>
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849 <td align="left" valign="top">
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parents:
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850 <img src="C1D17.jpg" border="1">
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851
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852 </td>
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parents:
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853
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854 <td width="10">&nbsp;</td>
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855 <td align="left" valign="top">
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856 <img src="C1D18.jpg" border="1">
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857
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858
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859 </td>
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parents:
diff changeset
860
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861
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862 <td width="10">&nbsp;</td>
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parents:
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863 <td valign="top" align="left">
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parents:
diff changeset
864
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parents:
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865 <b>Dia 17</b> Especially in high handicap games, this is a fairly common position, in which White has made a double kakari against a star point stone.
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parents:
diff changeset
866 <br><br>
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parents:
diff changeset
867 In the absence of special circumstances Black should without fail play to prevent White’s enclosure! For this purpose, B1 as shown is usually best, but sometimes the attachment at either “a” or “b” is preferable.
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parents:
diff changeset
868 <br><br>
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parents:
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869 <b>Dia 18</b> If Black doesn’t respond to the double attack and allows White to play the marked enclosing move on his key point before answering, he can still (just barely) achieve life in gote as shown, but with
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
870 even a slight inaccuracy he will almost surely die! And even if he does live, White’s advantage is considerable. So, on balance, Black would be well advised not to allow himself to be forced into this kind of situation!<br><br>
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parents:
diff changeset
871
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872
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873 </td>
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parents:
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874 </tr>
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parents:
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875 </table>
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parents:
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876 The principle of searching beyond the obvious for the best move stated earlier generally applies, but it’s especially relevant in the enclosure context, where the sense of relief that almost necessarily accompanies a successful
0e911cd3fd2a add content
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parents:
diff changeset
877 escape may readily blind you to the fact that a superior global result might have been obtained if only you’d looked further for a better move.<br><br>
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parents:
diff changeset
878 Here’s a fairly “typical” situation which beautifully illustrates this scenario.<br><br>
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parents:
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879
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880
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881 <table>
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parents:
diff changeset
882 <tr>
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883 <td align="left" valign="top">
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884
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885 <img src="C1D19.jpg" border="1">
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parents:
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886
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887 </td>
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888
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889 <td width="10">&nbsp;</td>
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890 <td valign="top" align="left">
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891 <br><br><br><br><br><br><br><br><br><br>
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parents:
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892 <b>Dia 19</b> In this game between two 5 D’s, the 12 marked White stones are almost enclosed, with no sure eyes yet! (Although one can be easily made.) So if they don’t get out immediately they will almost certainly be in big trouble,
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parents:
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893 possibly even resulting in a loss sufficient to cost White the game!<br><br> So what’s the best way for White to break out?<br><br>
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parents:
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894
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895
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896 <br><br>
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897
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898 </td>
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899 </tr>
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900 </table>
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parents:
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901 <br><br>
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902 <table>
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903 <tr>
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904 <td align="left" valign="top">
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905
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906 <img src="C1D20.jpg" border="1">
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907
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908 </td>
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909
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910 <td width="10">&nbsp;</td>
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911 <td valign="top" align="left">
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912 <br><br><br><br><br><br>
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parents:
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913 <strong>Diagram 20</strong> Beginning with the atari of W1 and then continuing with the forcing plays thru W9 succeeds in allowing White to escape, and in some situations would be the best way to play, but not here!<br><br>
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parents:
diff changeset
914 The problem with it is that Black becomes too strong on both sides.<br><br>
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parents:
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915
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parents:
diff changeset
916 So finding a better way to get out is highly desirable.<br><br>
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parents:
diff changeset
917
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918 </td>
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parents:
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919 </tr>
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parents:
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920 </table>
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parents:
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921 <br><br>
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parents:
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922
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923 <table>
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924 <tr>
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925
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926 <td align="left" valign="top">
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927 <img src="C1D21.jpg" border="1">
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parents:
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928
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929 </td>
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parents:
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930
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931 <td width="10">&nbsp;</td>
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parents:
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932 <td valign="top" align="left">
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parents:
diff changeset
933 <br><br><br><br><br><br>
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parents:
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934 <strong>Diagram 21</strong> Beginning with the atari on the other side is clearly better, because now Black has only been strengthened on the left, but it’s still inferior!<br><br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
935
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parents:
diff changeset
936 Although many players might be satisfied with this, the 5D who played White in this game looked further, and found something better!<br><br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
937 Do you see it? Try to find it for yourself before looking at the next diagram.<br><br>
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parents:
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938
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939 </td>
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940 </tr>
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941 </table>
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parents:
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942 <br><br>
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parents:
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943
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944 <table>
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945
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946 <tr>
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947 <td align="left" valign="top">
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948 <img src="C1D22.jpg" border="1">
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949
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950 </td>
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951
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952 <td width="10">&nbsp;</td>
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parents:
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953 <td valign="top" align="left">
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parents:
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954 <br><br><br><br>
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parents:
diff changeset
955 <strong>Diagram 22</strong> With the stylish “dog’s neck” extension of W1 here, White not only gets out as smoothly as before, but now is one step ahead in his race into the open center
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
956 - a major difference in enabling a later connection to friendly stones or forming eyes. (W1 works because “a” and “b” are miai for it to remain connected to his group below!)<br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
957 Perhaps equally important, playing this way doesn’t induce Black to strengthen himself on either side!<br><br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
958
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parents:
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959 White escapes in each case, but the seemingly small difference between Dia 22 and either Dia 20 or Dia 21 can easily change the balance between victory and defeat in a close game!<br><br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
960
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parents:
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961 </td>
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parents:
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962 </tr>
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parents:
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963 </table>
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parents:
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964 <br><br>
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parents:
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965
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parents:
diff changeset
966 <strong>Fighting Against Unenclosed Groups</strong><br><br>
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parents:
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967
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parents:
diff changeset
968 <center>
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parents:
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969 <br><table class="txtbox">
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970 <tr>
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971 <td width="30">&nbsp;</td>
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972 <td align="middle" valign="top">
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973
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974 <br>
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975 </font>
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976
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977 <font class="txtboxsmall">
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diff changeset
978 Because<br>
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parents:
diff changeset
979
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980 Only Enclosed Groups<br>
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parents:
diff changeset
981 Can Be killed,<br>
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parents:
diff changeset
982 <br>
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parents:
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983 <font class="txtboxbig">
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parents:
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984 There’s Little Value<br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
985 In Playing “Inside” Moves<BR>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
986 Against An Unenclosed Group<br><br>
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parents:
diff changeset
987
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988 </font>
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parents:
diff changeset
989
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990 </td>
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991 <td width="30">&nbsp;</td>
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992 </tr>
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993 </table>
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parents:
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994 </center>
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parents:
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995 <br><br>
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parents:
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996
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997 <center>
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parents:
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998 <br><table class="txtbox">
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parents:
diff changeset
999
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1000 <tr>
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1001 <td width="30">&nbsp;</td>
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parents:
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1002 <td align="middle" valign="top">
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parents:
diff changeset
1003
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1004
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diff changeset
1005 <br>
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parents:
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1006 <font class="txtboxsmall">
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parents:
diff changeset
1007 It’s Usually Better<br>
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parents:
diff changeset
1008 To Play Outside Moves,<br>
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parents:
diff changeset
1009 And Force Your Opponent<br>
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parents:
diff changeset
1010
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diff changeset
1011 To Make Eyes And “Live Small”<br><br>
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parents:
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1012 </font>
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1013
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1014 </td>
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1015 <td width="30">&nbsp;</td>
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1016 </tr>
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parents:
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1017 </table>
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parents:
diff changeset
1018 </center>
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parents:
diff changeset
1019 <br><br>
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parents:
diff changeset
1020
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parents:
diff changeset
1021 Caution!<br><br>
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parents:
diff changeset
1022 This principle is not absolute! There are circumstances in which the global position makes it more advisable to strike first
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1023 at the opponent’s key shape point(s) to prevent an easy two eyes, and then profitably harass the fleeing group as it struggles
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1024 to either connect or secure its eyes in the center.<br><br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1025 The following shows a situation in which attacking an unenclosed group from the inside was counterproductive.<br><br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1026
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1027 <br><br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1028
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parents:
diff changeset
1029 <table>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1030 <tr>
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parents:
diff changeset
1031 <td align="left" valign="top">
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1032
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parents:
diff changeset
1033 <img src="C1D23.jpg" border="1">
0e911cd3fd2a add content
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parents:
diff changeset
1034
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parents:
diff changeset
1035 </td>
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parents:
diff changeset
1036
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parents:
diff changeset
1037 <td width="10">&nbsp;</td>
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parents:
diff changeset
1038 <td valign="top" align="left">
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parents:
diff changeset
1039 <br><br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1040 <strong>Diagram 23</strong> This is the position a few moves after what we will discuss later as Dia 7, Chapter 2, with Black’s attention focused on the White group in the lower right center.<br><br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1041 This White group is not yet enclosed, so it’s in no immediate danger of dying no matter what happens next. But Black evidently reasoned that if he could prevent its ability to easily make two eyes
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1042 that would both force it to run and make it vulnerable to later profitable harassment. So....<br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1043
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parents:
diff changeset
1044 </td>
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parents:
diff changeset
1045 </tr>
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parents:
diff changeset
1046 </table>
0e911cd3fd2a add content
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parents:
diff changeset
1047 <br><br>
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parents:
diff changeset
1048
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parents:
diff changeset
1049 <table>
0e911cd3fd2a add content
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parents:
diff changeset
1050 <tr>
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parents:
diff changeset
1051 <td align="left" valign="top">
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parents:
diff changeset
1052 <img src="C1D24.jpg" border="1">
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parents:
diff changeset
1053
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1054
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1055 </td>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1056
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parents:
diff changeset
1057 <td width="10">&nbsp;</td>
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parents:
diff changeset
1058 <td valign="top" align="left">
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parents:
diff changeset
1059 <br><br><br><br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1060 <strong>Diagram 24</strong> B1 invaded to occupy the key shape point of the White formation, hoping to either cut it apart or prevent its making eyes.<br><br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1061 Allowing B2 next would enable B1 to connect out to the Black corner stones, shattering the White group’s viability and forcing it to run into the center eyeless. W2 was the best way to prevent that.
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1062 Then B3 aimed at either connecting B1 to the left or allowing it to escape.<br><br>
0e911cd3fd2a add content
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parents:
diff changeset
1063
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parents:
diff changeset
1064 </td>
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parents:
diff changeset
1065 </tr>
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parents:
diff changeset
1066 </table>
0e911cd3fd2a add content
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parents:
diff changeset
1067 <br><br>
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parents:
diff changeset
1068 But White neatly avoided that by extending with the simple but effective W4, assuring the capture of B1 and creating one eye, with good prospects for another and/or easy escape into the center.<br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1069 So the result of this premature invasion by B1 was not only a tactical failure but also an important strategic mistake, because it made the White group almost invulnerable!<br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1070
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parents:
diff changeset
1071
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parents:
diff changeset
1072 <br><br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1073
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1074 <table>
0e911cd3fd2a add content
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parents:
diff changeset
1075 <tr>
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parents:
diff changeset
1076 <td align="left" valign="top">
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parents:
diff changeset
1077 <img src="C1D25.jpg" border="1">
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parents:
diff changeset
1078
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parents:
diff changeset
1079 </td>
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parents:
diff changeset
1080
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parents:
diff changeset
1081 <td width="10">&nbsp;</td>
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parents:
diff changeset
1082 <td valign="top" align="left">
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parents:
diff changeset
1083
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parents:
diff changeset
1084 <br><br><br><br><br>
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parents:
diff changeset
1085 <strong>Diagram 25</strong> Instead of the invasion of B1 in Dia 24, Black should simply have played on the outside like this, expanding and strengthening his own formation and aiming to seal White in,
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1086 while biding his time to when an eye-killing sacrifice attack at the point of “a” might have a reasonable chance of success.<br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1087
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parents:
diff changeset
1088 </td>
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parents:
diff changeset
1089 </tr>
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parents:
diff changeset
1090 </table>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1091 <br><br>
0e911cd3fd2a add content
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parents:
diff changeset
1092
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1093 <strong>Fighting Against Large Groups</strong><br><br>
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parents:
diff changeset
1094 <center>
0e911cd3fd2a add content
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parents:
diff changeset
1095 <br><table class="txtbox">
0e911cd3fd2a add content
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parents:
diff changeset
1096 <tr>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1097 <td width="30">&nbsp;</td>
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parents:
diff changeset
1098 <td align="middle" valign="top">
0e911cd3fd2a add content
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parents:
diff changeset
1099
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1100
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1101 <br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1102 <font class="txtboxbig">
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1103
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1104 DIRECT THREATS TO KILL LARGE GROUPS<br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1105 ARE RARELY SUCCESSFUL<br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1106 </font>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1107
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1108 </td>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1109 <td width="30">&nbsp;</td>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1110 </tr>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1111 </table>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1112 </center>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1113
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1114 <br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1115
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1116
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1117 Because of the need for efficiency, the enclosure of a large group will often be more or less incomplete. So as the battle progresses and the group continues to grow, those imperfections will typically provide a number of opportunities
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1118 either to break out directly or to make eyes in place by capturing some of the surrounding attackers.<br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1119
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1120 Consequently<br><br>
0e911cd3fd2a add content
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parents:
diff changeset
1121
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1122 <center>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1123 <br><table class="txtbox">
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1124 <tr>
0e911cd3fd2a add content
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parents:
diff changeset
1125
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1126 <td width="30">&nbsp;</td>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1127 <td align="middle" valign="top">
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1128
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1129
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1130 <br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1131 <font class="txtboxsmall">
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1132 THE BEST PLAN USUALLY IS TO<br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1133 USE SUCH THREATS INDIRECTLY,<br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1134 AS THE MEANS OF ACHIEVING<br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1135 OTHER IMPORTANT OBJECTIVES<br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1136
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1137 </font>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1138
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1139 </td>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1140 <td width="30">&nbsp;</td>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1141 </tr>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1142 </table>
0e911cd3fd2a add content
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parents:
diff changeset
1143 </center>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1144 <br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1145
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1146
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1147 Here’s a “typical” example.<br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1148
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1149 <table>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1150 <tr>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1151 <td align="left" valign="top">
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1152 <img src="C1D26.jpg" border="1">
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1153
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1154 </td>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1155
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parents:
diff changeset
1156 <td width="10">&nbsp;</td>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1157 <td valign="top" align="left">
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1158 <br><br><br><br><br><br><br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1159
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1160 <strong>Diagram 26</strong> In this game between a 7D and 6D, Black has secured the upper right corner and a small life on the lower right side. In return, White has secured the lower right corner,
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1161 as well as eyespace on the upper right edge for his large incompletely settled but not yet enclosed group there.<br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1162 But it’s Black’s turn, and although there’s little chance that he can kill this White group, if possible he’d like to keep the pressure on and gain profit elsewhere by attacking it. But how to do that?<br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1163
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1164 </td>
0e911cd3fd2a add content
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parents:
diff changeset
1165 </tr>
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parents:
diff changeset
1166 </table>
0e911cd3fd2a add content
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parents:
diff changeset
1167 <br><br>
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parents:
diff changeset
1168
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parents:
diff changeset
1169 <table>
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parents:
diff changeset
1170 <tr>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1171 <td align="left" valign="top">
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parents:
diff changeset
1172 <img src="C1D27.jpg" border="1">
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parents:
diff changeset
1173
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parents:
diff changeset
1174 </td>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1175
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parents:
diff changeset
1176 <td width="10">&nbsp;</td>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1177 <td align="left" valign="top">
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parents:
diff changeset
1178 <img src="C1D28.jpg" border="1">
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1179
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parents:
diff changeset
1180
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parents:
diff changeset
1181 </td>
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parents:
diff changeset
1182
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1183
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parents:
diff changeset
1184 <td width="10">&nbsp;</td>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1185 <td valign="top" align="left">
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1186 <br><br><br><br><br><br><br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1187 <b><strong>Dia 27</strong></b> The Knight’s Move of B1 is the strongest way to proceed! Although White can then readily live on the edge if he acts immediately, allowing himself to become enclosed
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1188 is bad strategy! So instead White tried to escape.<br><br>
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1189
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1190 <b><strong>Dia 28</strong></b> With this sequence, Black deliberately didn’t go all out to try to prevent White’s escape! Instead, he cleverly parlayed enclosure threats to build center strength (note the almost captured W6 and 8),
0e911cd3fd2a add content
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1191 resulting in a global advantage that ultimately enabled him to win the game.<br><br>
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Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1192
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parents:
diff changeset
1193 </td>
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parents:
diff changeset
1194 </tr>
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1195 </table>
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1196
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1197
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1198 <br><br>
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1199 <strong>Click Here To Go To</strong><a href="Ch1P.html"><font size=+1><font Color="#0033FF"><strong> Chapter 1 Problems </strong></font></a>
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1200 <br><br>
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1201 <strong>Click Here To Move On To</strong><a href="Ch2.html"><font size=+1><font Color="#0033FF"><strong> Chapter 2</strong></font></a>
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1202
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1203 <br><br>
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1204 <strong>Click Here To Return To</strong><a href="Improve%20Fast%20Index.html"><font size=+1><font Color="#0033FF"><strong> Table Of Contents </strong></font></a>
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1205 <br><br>
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1206 <strong>Click Here To Return To</strong><a href="index.html"><font size=+1><font Color="#0033FF"><strong> Milt's Go Page</strong></font></a> <br><br><br><br>
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1207 <br><br>
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1208 <strong>Click Here To Email Your Comments/Suggestions To</strong><font size=+2><font color="#0033FF"><a href="mailto:bradleym@eniinternet.com?subject=Improve Fast Comments/Suggestions"> Milton N. Bradley</font></a>
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1209
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1210
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1211 </td>
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1212 <td width="100">&nbsp;</td>
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1213 </tr>
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1214 </table>
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1215 </body>
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1216
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1217 <!-- Mirrored from users.eniinternet.com/bradleym/Ch1.html by HTTrack Website Copier/3.x [XR&CO'2014], Sun, 06 Nov 2022 06:55:15 GMT -->
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1218 </html>