TsumegoFromGames51/Solution

Sub-page of TsumegoFromGames51
[Diagram]

Weak defense

B1 is a strong attack. If White blocks, B3 is decisive (If W4 at B5, Black plays at a).

[Diagram]

Local Ko

White should expand the eyespace. Black may hit the vital point with B5 and make ko locally. Note that Black can destroy the upper eye by a throw-in at a. However, W10 is a problem for Black depending on outside situation (White gets many local ko threats at least).

[Diagram]

In practice

So in practice, strengthening the outside in sente is preferable in most cases.


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