Beginner Exercise 259 / Solution

Sub-page of BeginnerExercise259

This position was adapted from a professional game, which one I cannot recall for the moment.

[Diagram]

Solution

B1 and B3 can force a ko for life. Black has some ko-threats in the vicinity of a.

[Diagram]

Variation

If W4 destroys the eye at the bottom, then B5 and B7 captures seven White stones.

[Diagram]

Local ko-threat

Later, White has a local ko-threat at W1.

[Diagram]

Solution

White should have played the atari at W1 before defending the cutting points at W3.


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