Event Black D. Brooks, 8k White Mark Roberts, 1k Place R.A.F.A Go Challenge Trophy, August 1972 Handicap 7 Result W+12 Analysis Andrew Daly Source BGJ 20, July 1973, Page 5 Setup B d4 q4 d10 k10 q10 d16 q16 Com Copyright British Go Association 1973, 1999 EndCom W 2 f3 B 3 d6 W 4 o3 Mark #2 Com White 2,4: With these two moves white threatens to enclose the side or attack black should he invade. EndCom B 5 m3 W 6 m4 Mark A@o5 Com White 6,8: Not really dramatic enough (probably not joseki). Better at 13 (A). EndCom VAR W 1 o5 ENDVAR B 7 l4 W 8 n4 Mark #6 A@o5 Com White 6,8: Not really dramatic enough (probably not joseki). Better at 13 (A). EndCom B 9 l5 Mark #2 Com Black 9: Quite good, but not normal, (looks to attack white 2). EndCom W 10 r6 B 11 p5 W 12 n6 B 13 o5 Com Black 13: Aji Heshi* - spoiling possibilities. White will always have to protect this cut and black may want to threaten it some other way later. * Spelt thus in BGJ. EndCom W 14 m6 B 15 p7 Mark A@q7 Com Black 15 should be more severe - white 96 (A) is a possibility. EndCom VAR B 1 q7 ENDVAR W 16 r3 Com White 16: The weak point of the corner handicap stone. EndCom B 17 q3 Com Black 17: Having played 15, it seems better to play at 18, taking the lower right side. EndCom VAR B 1 r4 ENDVAR W 18 r4 B 19 g5 W 20 l6 B 21 g3 W 22 f4 B 23 f5 W 24 g4 B 25 h4 W 26 g2 B 27 h3 Mark #21-27 Com Black 21-27: Excellent, white is hopelessly lost. EndCom W 28 d2 B 29 j6 Mark A@c3 Com Black 29: No! 30(A), White will resign. EndCom VAR B 1 c3 ENDVAR W 30 c3 B 31 c4 W 32 o17 Mark \T@c3 \T@d2 \T@f4 \T@f3 \T@g2 \T@g4 Com White 32 should protect his \t group with one more move. EndCom B 33 o16 W 34 n16 B 35 p17 W 36 o15 B 37 p16 W 38 n17 B 39 q13 W 40 f17 B 41 c14 Com Black 41: Very passive strategy. EndCom W 42 f15 Com White 42: Strengthening white's moyo and preparing to advance with large black moyo. ("?" to second half of comment!) EndCom B 43 e17 W 44 g18 Mark A@f18 Com White 44: Better at A. EndCom VAR W 1 f18 ENDVAR B 45 k15 W 46 k17 B 47 h16 W 48 j15 Mark B@h17 C@j17 Com White 48: Simply B or C. Cutting these 2 stones is of small importance at the moment. EndCom VAR W 1 h17 ENDVAR VAR W 1 j17 ENDVAR B 49 h15 W 50 j14 B 51 h14 W 52 k14 B 53 g17 W 54 f16 B 55 h18 Com Black 55 correctly separates the white groups. White must now threaten this black group in order to survive. EndCom W 56 e18 B 57 d18 W 58 f13 B 59 h12 W 60 g13 Com White 60: Aji Heshi. White may well get a cut at 61 later. EndCom B 61 h13 W 62 f11 B 63 g10 W 64 c13 B 65 e14 W 66 d15 B 67 e16 Com Black 67: Bad EndCom W 68 e15 B 69 c16 W 70 c15 B 71 b15 W 72 b14 B 73 b16 W 74 g11 B 75 j11 W 76 f10 B 77 h10 Com Black 77: Unimportant. EndCom W 78 d9 Com White 78: How about 79? Then white can next play at 78 or 80. EndCom VAR W 1 c9 B 2 d9 W 3 c10 ENDVAR VAR W 1 c9 B 2 c10 W 3 d9 ENDVAR B 79 c9 W 80 c10 B 81 d8 W 82 e9 B 83 b9 W 84 b10 B 85 a10 W 86 b11 B 87 a9 W 88 e8 B 89 d7 W 90 r13 B 91 r14 W 92 r12 B 93 r7 W 94 q6 B 95 o7 W 96 q7 B 97 q8 W 98 s14 B 99 r15 W 100 s15 B 101 s16 W 102 s10 B 103 r8 W 104 q12 Com Moves 104-115: Not very big. What about the white group on the lower side which has no eyes? EndCom B 105 t15 W 106 t13 B 107 p13 W 108 p12 B 109 n15 W 110 m15 B 111 n14 W 112 o9 B 113 p9 W 114 m14 B 115 n13 Mark #104-115 Com Moves 104-115: Not very big. What about the white group on the lower side which has no eyes? EndCom W 116 l3 B 117 k3 W 118 l2 B 119 m2 W 120 k2 B 121 h2 Mark A@j2 Com Black 121: Bad. Should have been at 151 (A) to kill the three white stones and keep pressure on the six others. EndCom VAR B 1 j2 ENDVAR W 122 n2 B 123 o11 W 124 o12 B 125 n12 W 126 r17 B 127 s17 Com Black 127: Misdirected, as subsequent events proved. EndCom W 128 o10 B 129 p11 W 130 q11 B 131 n8 W 132 j17 B 133 h17 W 134 r10 B 135 p10 W 136 b4 Com White 136-138: Very big. EndCom B 137 b5 W 138 b3 Mark #136-138 Com White 136-138: Very big. EndCom B 139 r2 Com Black 139-151: Good. EndCom W 140 s2 B 141 q2 Mark A@p2 Com Black 139-151: Good, although 141 should be at 152 (A) to threaten both white groups. EndCom VAR B 1 p2 ENDVAR W 142 s1 B 143 s6 W 144 s5 B 145 s7 W 146 t5 B 147 l8 W 148 k4 B 149 k5 W 150 j3 Prisoner k3 B 151 j2 Mark #139-151 Com Black 139-151: Good. EndCom W 152 p2 B 153 g7 W 154 p18 B 155 q18 W 156 o18 B 157 l12 Mark D@p19 Com Black 157: Much better at D. Not many points are gained by this move. EndCom VAR B 1 p19 ENDVAR W 158 b7 B 159 c7 W 160 a5 B 161 a6 W 162 b6 B 163 c5 Mark A@a4 Com Black 163 should play ko. EndCom VAR B 1 a4 Prisoner a5 W 2 c5 B 3 c6 W 4 a5 Prisoner b5 Mark \T@b5 Com 4 and \t are the ko. EndCom ENDVAR W 164 a7 Prisoner a6 B 165 k19 Mark A@l19 Com Black 165: Why not 169? EndCom VAR B 1 l19 ENDVAR W 166 j19 B 167 j18 W 168 k18 B 169 l19 W 170 l18 B 171 h19 Prisoner j19 Mark E@m19 Com Black 171: Why not E? EndCom VAR B 1 m19 ENDVAR W 172 r18 B 173 q17 W 174 q19 B 175 s18 W 176 r19 B 177 r16 Com The rest of the game was uneventful. White won by 12 points. Black lost because he did not take advantage of WHite's overplay. White left weak groups around the board and Black was far too respectful towards them. Black should have in his mind a clear idea of the approximate value of moves. In this way he will avoid playing in the wrong part of the board. White showed nerve, but should avoid Aji Heshi. Undefined situations benefit White in a handicap game. EndCom