:: Igo Hatsuyôron 120 (2015)

Joachim's Ko-Semeai - Putting the Cart

Before the Horse (2013 - 2015)

E4c - White's Group in the Top Left

has Five Liberties

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But White must not lose another liberty on the left side, as she did here with / . Five liberties for her group in the upper left corner are not sufficient any longer.

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White is forced to answer locally, so Black can re-capture the ko.

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Otherwise, White will lose her group on the left side, and so the game.

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