EVENT BOARDSIZE 19 WHITE O Meien, 9d BLACK Kudo Norio, 9d DATE 9 Sept 1993 PLACE Nihon Ki-in, Tokyo COM 19th Meijin, 3rd Prelim. Rd. 5 hrs each. Komi 5.5. ENDCOM B 1 q16 W 2 d4 B 3 r4 W 4 d17 B 5 p3 W 6 d15 B 7 q10 W 8 o17 B 9 m17 W 10 m16 B 11 l16 W 12 m15 B 13 n17 W 14 o16 B 15 q13 W 16 j16 B 17 l15 W 18 l14 B 19 k15 W 20 m13 B 21 j15 W 22 q15 B 23 r15 W 24 p15 B 25 r17 W 26 k17 B 27 l17 W 28 j13 B 29 g16 W 30 h16 B 31 h15 W 32 g17 B 33 f17 W 34 g18 B 35 g15 W 36 f18 B 37 g13 W 38 h11 B 39 d14 W 40 e15 B 41 e14 W 42 f11 B 43 c14 W 44 c15 B 45 d11 W 46 d9 B 47 j12 W 48 h12 B 49 h13 W 50 k13 B 51 k4 W 52 h3 B 53 o14 W 54 p13 B 55 p12 W 56 p14 B 57 q12 W 58 o12 B 59 o11 W 60 m4 B 61 k2 W 62 m6 B 63 n12 W 64 o13 B 65 f3 W 66 f4 B 67 e4 W 68 e5 B 69 e3 W 70 g4 B 71 d3 W 72 c3 B 73 g3 W 74 h4 B 75 h2 W 76 g2 B 77 f2 W 78 j2 B 79 g1 PRISONER g2 W 80 j3 B 81 c4 W 82 d5 B 83 b3 W 84 c2 B 85 b4 W 86 b2 B 87 c6 W 88 d2 B 89 j1 W 90 k3 B 91 l2 W 92 d7 B 93 d6 W 94 e6 B 95 c7 W 96 c8 B 97 e7 W 98 d8 B 99 l3 W 100 l4 B 101 a2 W 102 f7 B 103 o3 W 104 r5 B 105 q5 W 106 r6 B 107 s4 W 108 r9 B 109 r10 W 110 p7 B 111 n8 W 112 p5 B 113 m7 W 114 q4 B 115 q3 W 116 l6 B 117 p4 PRISONER q4 W 118 o6 B 119 m11 W 120 o18 B 121 f12 W 122 e11 B 123 e12 W 124 q18 B 125 r18 W 126 k11 B 127 l9 W 128 l10 B 129 m9 W 130 s9 COM This was a mistake, said White. He should have played the two-stage ko 'a', but the problem he had was assessing the ko threats. Even with hindsight he gave no clear view except that given the balance of the game he should have gambled. ENDCOM VAR W 1 c5 B 2 b5 W 3 b6 B 4 b7 W 5 a6 B 6 a7 W 7 a3 B 8 a4 PRISONER a3 W 9 a1 B 10 b1 PRISONER a1 W 11 c1 B 12 e2 W 13 b8 B 14 a5 PRISONER b6 a6 W 15 a1 PRISONER b1 ENDVAR B 131 b7 W 132 s11 B 133 s13 W 134 c5 B 135 b5 W 136 a6 B 137 e2 COM B7 would leave the same ko aji as before. ENDCOM W 138 k8 B 139 k9 W 140 j8 COM A smaller territory than he expected. ENDCOM B 141 b14 W 142 c11 B 143 d12 W 144 c12 COM d10 fails to make any significant territory after Black j10. ENDCOM B 145 k18 W 146 j18 B 147 k16 W 148 j17 B 149 e10 W 150 f9 COM Not 'a' ENDCOM VAR W 1 f10 B 2 f9 W 3 e9 B 4 g11 W 5 g10 B 6 h10 ENDVAR B 151 f10 W 152 g11 B 153 d10 W 154 b8 B 155 a7 W 156 b16 COM He would like to play g9 but Black b15 is sente. ENDCOM B 157 c10 W 158 b10 B 159 g9 W 160 f8 B 161 g10 W 162 s12 B 163 s10 W 164 t10 B 165 j9 COM Looks like he's connecting on a dame point, but not so - see the later moves. ENDCOM W 166 r14 B 167 s15 COM Slightly more profitable then s14. ENDCOM W 168 r13 B 169 s14 W 170 r19 B 171 s19 W 172 q19 B 173 q17 W 174 p17 B 175 r12 W 176 s5 COM How big is Black's terrritory at the bottom? ENDCOM B 177 q6 W 178 q7 B 179 t5 COM 43 points. He has this sente play. ENDCOM W 180 s7 B 181 b9 W 182 a8 B 183 b6 W 184 b11 B 185 h8 W 186 h7 B 187 g7 COM White didn't see this move - one reason he overrated his centre territory. ENDCOM W 188 g8 COM Not 'a'.' ENDCOM VAR W 1 j7 B 2 g6 W 3 g8 B 4 f6 W 5 f5 B 6 e9 W 7 e8 PRISONER e7 B 8 a9 ENDVAR B 189 j7 W 190 g6 PRISONER g7 B 191 h10 W 192 j11 COM j10 is meaningless since even if Black is cut in two his groups to left and right can live independently. Note that L19 gives him an eye. ENDCOM B 193 k7 W 194 h9 PRISONER h8 B 195 c9 W 196 a9 B 197 h8 PRISONER h9 W 198 m3 B 199 m2 W 200 h9 PRISONER h8 B 201 e9 W 202 e8 PRISONER e7 B 203 h8 PRISONER h9 W 204 k1 B 205 l1 PRISONER k1 W 206 h9 PRISONER h8 B 207 l12 W 208 k12 PRISONER j12 B 209 h8 PRISONER h9 W 210 n3 B 211 n2 W 212 h9 PRISONER h8 B 213 l7 W 214 t6 B 215 t4 W 216 q14 COM s18 is 5 points in gote, but White wants to keep it for ko threats. ENDCOM B 217 h8 PRISONER h9 COM Should have been q9. ENDCOM W 218 o10 B 219 n11 W 220 o9 B 221 l11 W 222 h9 PRISONER h8 B 223 k10 W 224 p11 B 225 p10 W 226 h8 B 227 t13 W 228 t11 B 229 j10 COM To forestall White L8, Black 129, White M8. ENDCOM W 230 s18 B 231 s17 W 232 t19 PRISONER s19 B 233 f16 W 234 n13 COM Big, otherwise Black n15. ENDCOM B 235 e17 W 236 e18 B 237 l18 W 238 n18 B 239 b15 W 240 a16 B 241 j5 W 242 k5 B 243 c13 W 244 o8 B 245 j6 W 246 o4 B 247 n5 W 248 o5 B 249 n6 W 250 n7 B 251 o7 PRISONER n7 COM Note that t17 is not a valid ko threat for White - Black can ignore it and live. ENDCOM W 252 a3 B 253 a4 PRISONER a3 W 254 n7 PRISONER o7 B 255 n16 COM White resigned for lack of ko threats. He has only three: a1, f15 and n10. Black has at least c17, c16, c18, L13, r7. Time taken: Black 4h 58, White 4h 59. Game published as Igo supplement, Jan 1994. ENDCOM