EVENT BOARDSIZE 19 BLACK Takeo Kajiwara, 9p WHITE Shuko Fujisawa, 9p PLACE Honinbo Challengers' League. DATE 1996 KOMI 5.5 RESULT W+Resign ANALYSIS John Diamond SOURCE BGJ 11, March 1970, Page 6 COM Copyright British Go Association 1970, 2001 ENDCOM B 1 q16 W 2 d17 B 3 q3 W 4 d3 B 5 d15 W 6 c15 B 7 c14 W 8 c16 B 9 d5 COM White 9: Joseki is to follow the variation, but against this White can play at 9 here. The black stones in the upper left will form a useful foothold for black later. ENDCOM VAR B 1 d14 W 2 f17 B 3 c10 MARK A@d13 B@c9 1@d17 2@d15 3@c15 4@c14 5@c16 6@d14 7@f17 ENDVAR W 10 e5 B 11 e6 W 12 e4 B 13 c3 MARK A@d7 B@c5 C@c6 D@b5 COM Black 13: The most common joseki is black at 19(A), white one point to the left of 9, black immediately above it, forming a ponnuki shape, and white one point further to the left of 9. See variation. The move played is most unusual. ENDCOM VAR B 1 d7 W 2 c5 B 3 c6 W 4 b5 MARK ALL ENDVAR W 14 f6 B 15 d6 W 16 f7 COM White 16: White builds a strong outside wall. ENDCOM B 17 f14 MARK A@d14 COM Black 17: He must play lightly here. A play at A would be too heavy. ENDCOM W 18 e7 B 19 d7 W 20 d8 B 21 c8 W 22 c9 COM White 22: Double hane, a tesuji and nearly always good. ENDCOM B 23 d9 W 24 e8 B 25 b7 MARK A@b8 B@b6 COM Black 25: Tesuji. A play at 26(A) leaves the group with a weakness at B. This tesuji occurs in many joseki, and might be remembered. ENDCOM W 26 b8 B 27 c7 W 28 d10 B 29 f16 W 30 r5 B 31 p4 MARK A@m3 #30 COM Black 31: Black must play on the lower side, but not too near the formidable white wall. This move threatens a play at 32(A) or the severe attack on 30 which follows. ENDCOM W 32 m3 B 33 c2 COM Black 33: Large. Reduces white’s area on the lower side. ENDCOM W 34 m5 B 35 p7 W 36 r8 B 37 r10 W 38 p8 B 39 o8 W 40 p9 B 41 r7 W 42 o7 B 43 q7 W 44 r9 B 45 o5 W 46 n7 B 47 s7 W 48 n9 COM White 48: Trade. White increases his centre potential in exchange for the lower right corner. ENDCOM B 49 o16 W 50 c4 B 51 d4 W 52 e3 MARK #50 COM White 52: White strengthens his wall. 50 leaves possibilities for later (aji). ENDCOM B 53 e18 W 54 b14 B 55 k16 W 56 m16 MARK A@m14 B@m12 COM White 56: White must now reduce the black moyo. Black must keep most of his territory and obtain outside influence - that is why he played 57(A) and 61(B). If white builds an outside wall in attacking black’s territory, his central area will be over 100 points and White will win easily. ENDCOM B 57 m14 W 58 h16 B 59 k17 W 60 k14 B 61 m12 W 62 h14 B 63 h17 W 64 l11 B 65 m10 W 66 m11 B 67 n10 W 68 n11 B 69 o10 W 70 o9 B 71 l10 W 72 q11 B 73 q10 W 74 p10 B 75 o11 W 76 n12 B 77 p11 W 78 q12 B 79 k11 W 80 q13 B 81 o13 W 82 n13 B 83 n14 W 84 o12 B 85 p12 W 86 p13 B 87 o14 W 88 l13 B 89 k10 W 90 h12 MARK #37 #73 #89 COM White 90: The outcome now depends on three things: Firstly, can Black save his two stones 37 and 73? If he can, then White’s group including 80 will be very weak. Secondly, can Black save his central group including 89? This will be hard. Thirdly, White should save his upper group including 90, but how much territory will he get in the centre? He cannot decide his strategy for this until the first point is decided. ENDCOM B 91 s11 W 92 s12 B 93 s9 W 94 r15 B 95 r16 W 96 s16 B 97 s17 W 98 s8 B 99 t8 W 100 q15 B 101 r13 W 102 p16 B 103 p17 W 104 p15 B 105 o17 W 106 r17 B 107 q17 W 108 t17 B 109 s18 W 110 s13 B 111 s15 W 112 t15 B 113 t16 PRISONER s16 MARK \T@s16 COM Black 113: Ko for the group. The ko is worth about forty points. ENDCOM W 114 r14 B 115 p14 W 116 s16 PRISONER t16 B 117 m8 W 118 n8 PRISONER o8 B 119 t16 PRISONER s16 W 120 p6 B 121 q5 W 122 s16 PRISONER t16 B 123 h11 W 124 j17 B 125 j16 W 126 g17 COM White 126: The ko is temporarily forgotten as a ko threat turns into a vicious fight between the two groups. ENDCOM B 127 j18 PRISONER j17 W 128 g16 B 129 g12 W 130 f13 B 131 g13 W 132 g14 B 133 f15 W 134 g18 B 135 e17 W 136 g11 B 137 h13 W 138 j13 B 139 f12 W 140 j12 B 141 h10 W 142 e13 B 143 e12 W 144 d13 B 145 f10 W 146 l15 B 147 l14 W 148 k12 B 149 m13 W 150 l12 B 151 n16 W 152 k15 B 153 j15 W 154 j14 B 155 m17 W 156 s14 PRISONER s15 COM White 156: White wins the ko. The outcome of the fight is not completely clear. The white group has one eye and many liberties, the centre black group has one eye, but the upper left black group no eyes at all. A complicated position. ENDCOM B 157 c13 W 158 d12 B 159 d14 W 160 b12 B 161 c12 W 162 d11 B 163 g10 W 164 b11 B 165 e9 COM Black 165: It is now obvious that the black group dies first in the struggle. This move leaves the white wall in the lower middle weak. Black must save his middle group to win and, by attacking the white wall, he may yet do so. ENDCOM W 166 c11 B 167 j6 W 168 q6 B 169 r6 W 170 o6 B 171 s5 W 172 p5 B 173 o4 W 174 q4 PRISONER q5 B 175 r4 W 176 q5 B 177 r3 W 178 o2 B 179 h3 COM Black 179: The last fight begins. ENDCOM W 180 h4 B 181 j4 W 182 j3 B 183 g4 W 184 h5 B 185 g2 W 186 d2 B 187 g5 W 188 b4 B 189 f5 W 190 b2 MARK #20 COM White 190: The five white stones including 20 die before the black group in the corner. ENDCOM B 191 n5 W 192 m6 B 193 n3 W 194 n2 B 195 m4 W 196 l4 COM White 196: Another ko. Black has many ko threats in the upper left corner. ENDCOM B 197 l3 W 198 n4 PRISONER m4 B 199 c17 W 200 d16 B 201 m4 PRISONER n4 W 202 m2 B 203 l5 W 204 n4 PRISONER m4 B 205 d18 W 206 b17 B 207 m4 PRISONER n4 W 208 k4 B 209 k5 W 210 n4 PRISONER m4 B 211 c18 W 212 b18 B 213 m4 PRISONER n4 W 214 k3 B 215 p3 W 216 n4 PRISONER m4 B 217 b16 W 218 b15 B 219 m4 PRISONER n4 W 220 h2 B 221 g3 W 222 n4 PRISONER m4 B 223 g19 W 224 f19 B 225 m4 PRISONER n4 W 226 h6 B 227 j5 W 228 n4 PRISONER m4 B 229 h19 W 230 f18 B 231 m4 PRISONER n4 W 232 m9 B 233 l8 W 234 n4 PRISONER m4 B 235 h15 W 236 g15 B 237 m4 PRISONER n4 W 238 l9 B 239 k8 W 240 n4 PRISONER m4 B 241 b1 W 242 b3 B 243 m4 PRISONER n4 W 244 j7 B 245 k7 W 246 n4 PRISONER m4 B 247 f1 MARK A@d1 COM Black 247: Threatens a connection at 248(A). ENDCOM W 248 d1 B 249 m4 PRISONER n4 W 250 l6 B 251 k6 W 252 n4 PRISONER m4 COM White 252: Black has no ko threats left. Although his central group lives the large loss in the upper left leaves him about 15 points behind without many opportunities to pull back. Black resigns. ENDCOM