BeginnerExercise193/Solution

Sub-page of BeginnerExercise193
[Diagram]

Solution

After B1, black is alive. If white plays W2 at a, then black can safely tenuki and is still alive.

[Diagram]

Not a ko

If white plays W2 here, then black replies at B3 and lives unconditionally.

[Diagram]

Failure

If black plays B1 here, then after W2, black must play B3 to live. This is a seki, so black has less territory than in the solution diagram. Alternatively, black could play B3 at a to start a high-risk ko, but that's generally a bad idea.



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