BeginnerExercise259/Solution

Sub-page of BeginnerExercise259
[Diagram]

A ko.

I see a very bad ko for black. -Mihoda

[Diagram]

B wins the ko.[1]

[Diagram]

Where to play for W.

A white play at W1 seems best. -Mihoda

[Diagram]

Five ko threats are left over.

B1, B3, B5, B7 & B9 are ko threats later on, so look for B to start ko. - Mihoda


[1]

[Diagram]

Black wins ko (better)

B5 @ BC

Bill: Black has a better way to win the ko. B1 puts the WC stones in atari. If White takes the ko with W2, B3 says atari again, and White cannot connect at BC because of damezumari (connect and die). After W4 B5 takes the WC stones.

[Diagram]

Local ko threat

Bill: That being the case, W1 is a local ko threat for White. If B2 connects @ W3, W3 @ B2 kills.

Note that Black has some local ko threats starting at a.


This is a copy of the living page "BeginnerExercise259/Solution" at Sensei's Library.
(OC) 2007 the Authors, published under the OpenContent License V1.0.
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