EVENT WHITE Jon Diamond, 1d BLACK Colin Irving, 1d RESULT W+R BOARDSIZE 19 DATE Autumn 1965 PLACE Pontefract Castle, London. 1st British Championship KOMI 5.0 SOURCE BGJ 41, May 1978, Page 5 COM Copyright British Go Association 1978, 2000 Shodans don't play like they used to, Thank Heavens! Jon and Colin would be the first to admit that their play is only up to present-day [1978] standard. No matter. Nothing is as incomprehensible as a game without mistakes. Black Rank: 1 dan Write Rank: 1 dan ENDCOM B 1 R16 W 2 C4 B 3 Q3 W 4 D17 B 5 P17 W 6 R5 B 7 R7 W 8 P5 B 9 O4 W 10 Q8 B 11 R4 W 12 E3 B 13 S5 MARK R4 COM Black 13: When a move like 11 is ignored it is often very strong to follow up with another. Black's corner becomes very large and strong. ENDCOM W 14 C10 B 15 D15 W 16 C13 B 17 C17 W 18 E15 B 19 D16 W 20 E16 B 21 E17 COM Black 21: The sequence to white 40, excluding 38 is the 'bread and butter' tesuji. ENDCOM W 22 D18 B 23 E18 W 24 C18 B 25 B18 W 26 B17 B 27 C16 W 28 B19 B 29 A18 W 30 A17 B 31 D19 W 32 A19 B 33 B18 W 34 A18 B 35 E19 W 36 B16 B 37 C19 W 38 D14 B 39 B18 W 40 B15 MARK B15 D14 C19 B16 E19 A19 D19 A17 A18 B19 MARK C16 B17 B18 C18 E18 D18 E17 COM Black 21: The sequence to white 40, excluding 38 is the 'bread and butter' tesuji. Note especially black 29(34), following the proverb: 'add a stone and sacrifice two'. This tesuji is surprisingly common, against the edge as well as the corner. ENDCOM B 41 G17 W 42 K3 B 43 M3 W 44 K5 MARK A@E5 M3 COM White 44: A standard strong response to 43, which is too narrow an extension from his very strong corner. 50(A) is better - a vital point for reducing White's corner. ENDCOM B 45 E10 W 46 S16 B 47 R17 W 48 R13 B 49 Q11 MARK B@E5 A@S11 COM Black 49: By attacking with a high 4th-line move, white has the chance to slip under to 53(A) or jump to the centre. Black cannot stop both, so white takes 50(B). ENDCOM W 50 E5 B 51 R12 W 52 S12 B 53 S11 W 54 Q12 B 55 R11 W 56 S14 B 57 Q13 W 58 Q14 B 59 P12 MARK A@R15 COM Black 59: This capture makes black very strong, but white's shape is almost perfect after 60(A). Not a successful attack for black. ENDCOM W 60 R15 B 61 N6 MARK Q8 P5 R5 COM Black 61: His reward for 59 is an attack on 6-8-10 which will be driven towards the black ponnuki. ENDCOM W 62 O8 B 63 P7 W 64 Q7 B 65 P6 W 66 Q6 B 67 P8 W 68 P9 B 69 O6 W 70 Q10 B 71 R9 W 72 Q9 B 73 O10 W 74 O9 B 75 M8 W 76 M9 B 77 L9 W 78 N10 B 79 O11 W 80 M12 B 81 N12 W 82 N13 B 83 M11 COM Black 83: This turns out badly. Black above 77, white 84, black 85, white 83 (see variation) produces a similar shape without sacrificing a stone. But Black has problems anyway. He would like to steer between the two White groups, then turn and attack the upper group - but he has already made that group too strong. ENDCOM VAR B 1 L10 W 2 N11 B 3 O12 W 4 M11 ENDVAR W 84 N11 B 85 O12 W 86 L11 B 87 E14 W 88 E13 B 89 F14 W 90 E9 MARK E10 E13 COM White 90: White 88 weakened black 45. White expands his side upwards and is now attacking black. ENDCOM B 91 H3 W 92 J4 B 93 G5 W 94 G6 B 95 F3 W 96 F2 B 97 K2 W 98 J2 B 99 L2 W 100 J3 B 101 H6 W 102 H5 B 103 O15 W 104 M14 B 105 M15 W 106 P15 B 107 O14 W 108 P16 B 109 O16 W 110 K14 B 111 S17 W 112 T15 B 113 T12 W 114 S13 B 115 J15 W 116 K15 B 117 K16 W 118 H15 MARK A@F13 COM White 118: Greedy. 119(A) is the focal point of two moyos. Whoever plays there first will expand his own area while reducing his opponents. ENDCOM B 119 F13 W 120 J14 MARK A@E12 COM White 120: Even greedier. Black 121(A) is a tremendous move, forcing White back in bad shape. ENDCOM B 121 E12 W 122 D13 B 123 D10 COM Black 123: Naturally; now White's group is in trouble. ENDCOM W 124 D9 B 125 C11 W 126 D11 B 127 D12 W 128 C12 B 129 E11 W 130 B11 B 131 B10 COM Black 131: Black's reward is a ko, but this is a bad ko threat because it only threatens another ko. He should threaten white's right hand group, or break into the giant left hand corner. ENDCOM W 132 D11 B 133 T17 W 134 C11 B 135 T16 W 136 T13 B 137 S15 W 138 G16 COM White 138: White exchanges his threatened group for cutting off the black centre stones. ENDCOM B 139 S16 W 140 F16 B 141 H17 W 142 J9 B 143 K9 W 144 K10 B 145 J16 W 146 G14 B 147 J8 W 148 H8 B 149 H7 W 150 J7 B 151 H9 COM Black 151: Black makes a sort of breakthrough, but in the following sequence can only struggle towards a single eye. ENDCOM W 152 K8 B 153 G8 W 154 J8 B 155 F6 W 156 G9 B 157 F9 W 158 G10 B 159 F8 W 160 E7 B 161 H4 W 162 J5 B 163 H2 W 164 J1 B 165 F5 W 166 F4 B 167 E6 W 168 D5 B 169 F10 W 170 G11 B 171 D6 W 172 C6 B 173 D7 W 174 E8 B 175 C7 W 176 C9 B 177 B9 W 178 B6 B 179 F7 W 180 B7 B 181 B8 W 182 F17 B 183 H13 W 184 H14 B 185 F18 W 186 C18 B 187 H16 W 188 G15 B 189 R6 W 190 Q5 B 191 R8 W 192 D17 B 193 D18 W 194 C15 B 195 B18 W 196 G18 B 197 C18 W 198 M4 B 199 N8 W 200 N9 B 201 N4 W 202 L3 B 203 M5 W 204 M2 B 205 L4 W 206 N2 COM White wins by resignation. ENDCOM