Black to play. Capture the marked white stones within 3 moves.
Stones to capture: A9, B9, C9, D9, C8, D8
Black to play.
Problem p168
한국어within 3, 5 legal points
Why this is the move
White has 5 possible answers. Every one of them is listed below with the way Black captures. These are search results, not written commentary.
- Black C7, White pass, Black A8, White pass, Black B8 (captures 6)
- Black C7, White A8, Black A7, White pass, Black B8 (captures 7)
- Black C7, White B8, Black B7, White pass, Black A8 (captures 7)
- Black C7, White A7, Black B8, White pass, Black A8 (captures 6)
- Black C7, White B7, Black A8, White pass, Black B8 (captures 6)
Black has 5 legal points here and exactly one of them captures. White answers the others as shown and survives.
- Black A8, White answers at B8 and lives.
- Black B8, White answers at A8 and lives.
- Black A7, White survives even by passing.
- Black B7, White survives even by passing.