RTG Problem 8 / Attempts

Sub-page of RTGProblem8

Grauniad:

[Diagram]

Black to move: 6 at 3, 8 at 1

Alive if Black to move.

Dead if White to move, starting with W7.



Andre Engels: In your sequence, if White answers B1 at B3, Black is dead. Therefore I think Black should start at B3, as below, leading to ko.

[Diagram]

Ko

If White answers B1 at W4, Grauniad's sequence gives Black life, so White would do best to connect at W2, and fight a ko with B3 and W4.

If it's White's move, there are plenty of moves that kill Black. My own preference would be to play White a or b, since they have most influence on the outside.


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