EVENT WHITE Matthew Macfadyen, 6d BLACK Terry Stacey, 5d RESULT W+8.5 BOARDSIZE 19 KOMI 5.5 TIMELIMIT 3hours SOURCE BGJ61. March 1984. Page 8. COM Copyright British Go Association 1984,1999 Black Rank: 5 dan Write Rank: 6 dan ENDCOM B 1 Q16 W 2 D4 B 3 R4 W 4 D17 B 5 P3 W 6 R9 B 7 C15 W 8 D13 B 9 E15 W 10 F16 B 11 D11 W 12 B13 COM White 12: Immediate interest was generated by this, which is not in any of the standard joseki books (it was recently invented by Korean professionals and came to Europe via Mr Yoo in Cologne). ENDCOM B 13 H16 W 14 F15 B 15 E14 W 16 C16 B 17 B15 W 18 H15 MARK A@E12 COM See 20. ENDCOM VAR W 1 E12 ENDVAR B 19 E13 W 20 J16 MARK 12@B13 8@D13 13@H16 18@H15 A@E12 COM White 20: However any intention Matthew might have had of rapidly gaining an advantage with White 12 were overturned with the sequence to 20. The result was obviously good for black (white 8 and black 13 effectively cancel each other out, leaving white 12 as a superfluous stone). Matthew's mistake seemed to be 18; to be consistent with 12 he should play at A ENDCOM B 21 C8 COM Neither of the stones 8 and 13 were dead yet, and the reader should note how black 21 and 25, and white 22 and 26 were designed to reduce the aji remaining in these stones while capturing them on a large scale. ENDCOM W 22 O17 B 23 R14 W 24 C6 B 25 E8 W 26 Q18 MARK 8@D13 13@H16 21@C8 22@O17 25@E8 26@Q18 COM Neither of the stones 8 and 13 were dead yet, and the reader should note how black 21 and 25, and white 22 and 26 were designed to reduce the aji remaining in these stones while capturing them on a large scale. ENDCOM B 27 R11 W 28 R6 B 29 J4 W 30 P5 B 31 J15 COM Black 31-35: Black rapidly used some of this aji by playing 31 and 33, and then cutting at 35. White cannot capture this stone in a ladder due to 31 and 33. ENDCOM W 32 K16 B 33 H14 W 34 G15 B 35 Q6 MARK 31@J15 32@K16 33@H14 34@G15 35@Q6 COM Black 31-35: Black rapidly used some of this aji by playing 31 and 33, and then cutting at 35. White cannot capture this stone in a ladder due to 31 and 33. At this point each player had used about 30 minutes. ENDCOM W 36 Q5 B 37 R5 W 38 S6 B 39 P6 W 40 O6 B 41 Q8 W 42 O3 MARK A@Q3 COM White 42: The exchange of 42 for 43 (A) allows black to strengthen his corner but restricts black's expansion along the lower side - on balance probably worth it. ENDCOM B 43 Q3 W 44 N5 B 45 Q9 W 46 R10 B 47 Q10 W 48 S11 B 49 S7 MARK A@S12 B@R12 COM Black 49 seemed to be a major mistake - it should be at A. If White protects his group on the side, Black plays at 50 (B) and it does not seem possible for white to kill the corner. Black 49 is too slow since it does not even kill two stones cleanly. ENDCOM W 50 R12 B 51 Q11 W 52 Q12 B 53 P12 W 54 Q14 B 55 P13 MARK 52@Q12 54@Q14 A@Q13 COM Black 55' would be better wedging in between 54 and 52*. * BGJ had 56 which is adjacent to 54. 52 seems more likely. ENDCOM VAR B 1 Q13 ENDVAR W 56 Q13 B 57 O16 W 58 R16 MARK 57@O16 A@Q15 COM White 58 was a good counter attack to 57; he cannot simply protect the upper side, since black 60 (A) would become too effective. Play continued naturally up to 64 but black's corner is barely alive. ENDCOM B 59 R15 W 60 Q15 B 61 R17 W 62 P16 B 63 Q17 W 64 O15 B 65 M3 COM Black 65-67: Terry attacked with 65 and 67, but white 68 threatened to play 69, saving the two stones on the side and preparing a counter attack against Black's group 45, 47 etc. ENDCOM W 66 N3 B 67 M4 W 68 N8 MARK 65@M3 66@N3 67@M4 68@N8 COM Black 65-67: Terry attacked with 65 and 67, but white 68 threatened to play 69, saving the two stones on the side and preparing a counter attack against Black's group 45, 47 etc. ENDCOM B 69 R7 COM Matthew had now taken one hour and Terry 1 hour 20 minutes. At this stage a rough count gives Black about 60 points, while White has 50 plus the lower left corner plus the komi. Black therefore needs a successful invasion of the corner without sustaining a major loss elsewhere. ENDCOM W 70 G3 B 71 L6 W 72 L8 B 73 J7 COM Black 73 is just a little too loose - it should be one point lower. ENDCOM W 74 M6 B 75 D3 COM Black 75 successfully invades the corner. ENDCOM W 76 E3 B 77 C3 W 78 C4 B 79 E2 W 80 F2 B 81 E4 W 82 F3 B 83 B4 W 84 B5 B 85 B2 W 86 E5 MARK A@A4 COM White 86' could start a ko at 88 (A), but this would be too dangerous if black won the ko he could continue at 86 himself and kill most of White's stones in the area. ENDCOM B 87 D2 W 88 A4 B 89 B3 W 90 H5 B 91 K6 W 92 P17 B 93 R18 W 94 K3 COM White now counterattacked against the black group on the lower side, and after Terry's mistake at 99 (it should be 100 or 101), white has enough on the lower side to compensate for his loss in the corner. ENDCOM B 95 M7 W 96 M5 B 97 K4 W 98 J3 B 99 H4 MARK A@L4 B@N7 COM White now counterattacked against the black group on the lower side, and after terry's mistake at 99 (it should be 100 (A) or 101 (B)), white has enough on the lower side to compensate for his loss in the corner. ENDCOM W 100 L4 B 101 N7 W 102 O7 B 103 M8 W 104 P8 B 105 Q7 W 106 M9 B 107 N9 W 108 L7 B 109 O8 W 110 N6 B 111 N8 W 112 N10 B 113 O9 W 114 O10 B 115 P9 W 116 L10 COM White 116: The sequence to 116 seemed to be an overplay, giving Terry chances to come back - Matthew could not resist the squeeze. ENDCOM B 117 M11 W 118 M10 B 119 K15 COM Black 119 was nicely timed to increase his strength on the upper side - this could be useful in the following fight - but... (see 124) ENDCOM W 120 L16 B 121 O11 W 122 J9 B 123 J11 W 124 H7 COM White 124 was a crushingly effective way of saving the white group. In all the sequences (including the somewhat desperate one Terry chose) black has one liberty fewer than white. ENDCOM B 125 H8 W 126 J8 B 127 G7 W 128 H6 B 129 G5 W 130 G6 B 131 F6 W 132 G4 B 133 F5 W 134 F7 B 135 E6 W 136 F4 B 137 E7 W 138 G8 B 139 H9 W 140 G9 B 141 H10 W 142 J6 B 143 K7 W 144 K8 COM After 144 Matthew had taken 1.5 hours and looked invincible. Terry had used 2.5 hours but is always at his most dangerous when he is behind. ENDCOM B 145 E16 COM Black 145 - 149 seemed to the spectators to be the beginning of the end, but it was not to be. ENDCOM W 146 E17 B 147 G10 W 148 F9 B 149 B17 MARK 45@E16 46@E17 47@G10 48@F9 49@B17 COM Black 145 - 149 seemed to the spectators to be the beginning of the end, but it was not to be. ENDCOM W 150 C18 B 151 P18 COM Black 151 - 153 is capture which is larger than it looks (worth 19 points). Had White played 151 then 155 would be sente for him. ENDCOM W 152 O18 B 153 Q19 W 154 B7 COM White 154, Black 155: Both are sente moves, but 154 is probably bigger. ENDCOM B 155 S13 COM White 154, Black 155: Both are sente moves, but 154 is probably bigger. ENDCOM W 156 B9 MARK 29@G5 31@F6 COM White 156 gives the possibility of killing the black group 129, 131 etc or of rescuing the two stones 8 and 12, while black 159 is worth approximately 20 points. However, as Terry was behind it was reasonable to exchange a definite gain at 159 for a potential loss at 156 - and to hope Matthew would make a mistake. ENDCOM B 157 B8 W 158 A8 B 159 S12 COM White 156 gives the possibility of killing the black group 129, 131 etc or of rescuing the two stones 8 and 12, while black 159 is worth approximately 20 points. However, as Terry was behind it was reasonable to exchange a definite gain at 159 for a potential loss at 156 - and to hope Matthew would make a mistake. ENDCOM W 160 C10 B 161 F10 W 162 E9 B 163 D9 W 164 E10 MARK A@K5 COM White 164, Black 165 : Matthew duly erred with 164. This encouraged black 165 which he wanted to play anyway. 164' should simply be at A. ENDCOM VAR W 1 K5 ENDVAR B 165 D10 W 166 E11 B 167 B11 COM Black 167: Black retained much of his territory on the left with 167 while white came into the centre, which was rather small. Terry was still a few points behind though. ENDCOM W 168 E12 B 169 D12 W 170 G12 B 171 G14 W 172 H12 B 173 F17 W 174 G17 B 175 F18 W 176 G18 B 177 L11 W 178 B16 B 179 A16 W 180 B18 B 181 O19 W 182 N18 B 183 N19 W 184 M19 B 185 P19 W 186 M17 B 187 F14 W 188 G16 B 189 B10 W 190 P2 B 191 Q2 W 192 C9 B 193 C11 W 194 A9 B 195 C13 W 196 O2 B 197 D5 W 198 E4 B 199 D6 W 200 C7 B 201 D8 W 202 C5 B 203 J13 W 204 L15 B 205 K10 W 206 K5 B 207 A10 W 208 A7 B 209 P1 W 210 O1 B 211 Q1 W 212 A18 B 213 O4 W 214 N4 B 215 P4 W 216 A17 B 217 A15 W 218 O5 B 219 L14 W 220 M14 B 221 L13 W 222 M13 B 223 N11 W 224 L9 B 225 O14 W 226 N14 B 227 N15 W 228 N16 B 229 D16 W 230 C17 B 231 M12 W 232 P14 B 233 O13 W 234 E1 B 235 D1 W 236 F1 COM White 236 was sente, but at the time neither player noticed it. Matthew was the first to spot that 240 starts a ko. ENDCOM B 237 N13 W 238 M15 B 239 J12 W 240 B1 B 241 C1 W 242 A2 B 243 A1 W 244 Q4 B 245 R3 W 246 B1 B 247 A5 W 248 A6 B 249 A1 W 250 S19 B 251 S16 W 252 B1 B 253 H17 W 254 H18 B 255 A1 W 256 K14 COM White 256 had to be ignored by Terry in order to save his group. ENDCOM B 257 A3 W 258 K13 B 259 P7 W 260 L12 B 261 J14 W 262 K12 B 263 P10 W 264 L5 B 265 K11 W 266 A5 COM Matthew won by 8.5. If black 239' had defended at 257, then he would still have won, but only by 2.5. ENDCOM