KyuExercise40/Solution

Sub-page of KyuExercise40
[Diagram]

Black to play and kill the invader, white+circle.




[Diagram]

Forcing sequence

B1 connects, of course. Then W2 is forced to prevent easy life. The same holds for W4 - W10. The throw-in, B7, is tesuji.

[Diagram]

Double ko life

B1 is another tesuji. When W2 plays atari, B3 makes double ko life.

(B9 in the previous diagram could also be at B1 in this diagram.)


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