1# N3 is ineffective. N2 and N1 differ in that the latter move gives 2# white the option to defend with a (disadvantageous) ko. L3 and K2 3# are also effective but miss the point and waste good ko threats. 4loadsgf games/incident107.sgf 216 51 combination_attack black 6#? [N2|N1|L3|K2] 7 8loadsgf games/atari_atari01.sgf 235 92 combination_attack black 10#? [PASS] 11 12loadsgf games/arb/game02.sgf 69 133 combination_attack black 14#? [PASS] 15 16loadsgf games/incident156.sgf 232 174 combination_attack white 18#? [K17] 19 20# K12 doesn't work. 21loadsgf games/ego.sgf 246 225 combination_attack black 23#? [PASS] 24 25# Retired as endgame1.sgf is no longer in CVS. /ab 26# # E8 is bogus 27# loadsgf games/endgame1.sgf 3 28# 6 combination_attack black 29# #? [PASS] 30 31# D11 can be answered at C12. 32loadsgf games/scoring/score30.sgf 337 combination_attack black 34#? [PASS] 35 36loadsgf games/atari_atari02.sgf 140 378 combination_attack black 38#? [PASS] 39 40loadsgf games/atari_atari03.sgf 222 419 combination_attack white 42#? [A11] 43 44# Both G5 and J4 capture (at least) the G6 string. After endgame 45# considerations, J4 turns out to be one point bigger. 46loadsgf games/atari_atari04.sgf 279 4710 combination_attack white 48#? [J4|G5] 49 50loadsgf games/viking2.sgf 140 5111 combination_attack white 52#? [M14] 53 54loadsgf games/viking2.sgf 146 5512 combination_attack white 56#? [N13|Q12] 57 58loadsgf games/trevor/auto/c24.sgf 62 5913 combination_attack black 60#? [D8] 61 62loadsgf games/nngs/gnugo-3.1.18-gopriest-200201072104.sgf 104 6314 combination_attack black 64#? [PASS] 65 66loadsgf games/atari_atari05.sgf 291 6715 combination_attack black 68#? [B13] 69 70loadsgf games/atari_atari06.sgf 7116 combination_attack white 72#? [K3] 73 74loadsgf games/nngs/Lazarus-gnugo-3.1.34-200204280120.sgf 194 7517 combination_attack white 76#? [S10] 77 78loadsgf games/nngs/gnugo-3.3.12-guest-200212171626.sgf 148 7918 combination_attack black 80#? [R11|R14] 81 82loadsgf games/nngs/gnugo-3.3.10-deye-200210211347.sgf 135 8319 combination_attack black 84#? [P9|Q7] 85 86# See also nando:25 87loadsgf games/nando/auto017.sgf 88white P16 8920 combination_attack black 90#? [L17]* 91 92loadsgf games/nngs/leftd-gnugo-3.3.16-200302252226.sgf 256 9321 combination_attack black 94#? [Q9|N13|O13] 95 96loadsgf games/nngs/gnugo-3.3.16-ccwills-200303030550.sgf 9722 combination_attack black 98#? [L10] 99 100loadsgf games/atari_atari07.sgf 10123 combination_attack black 102#? [C8] 103 104loadsgf games/atari_atari08.sgf 227 10524 combination_defend black 106#? [!.*(K16|A12|R12|S12|T12|A11|B11|C11|R11|S11|T11|A10|C10|Q10|S10|D9).*]* 107 108# T14 is a blunder. GNU Go should know how to punish it. 109loadsgf games/atari_atari09.sgf 110play black T14 11125 combination_attack white 112#? [R16] 113 114loadsgf games/self_play/354-34-2.sgf 150 11526 combination_defend white 116#? [E11|E12]* 117 118loadsgf games/filllib14.sgf 119play white H5 12027 combination_attack black 121#? [0]* 122 123# See also nngs:1060. Black has no combination attack at R3. 124loadsgf games/nngs/gnugo-3.1.18-goku-200201042350.sgf 52 12528 combination_attack black 126#? [0]* 127 128loadsgf games/atari_atari10.sgf 12929 combination_attack white 130#? [K5] 131