:: Igo Hatsuyôron 120 (2015)

Joachim's Ko-Semeai - Putting the Cart

Before the Horse (2013 - 2015)

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FLAG 3: ( 1008)
It is Black's choice to use the variation of , , , .
But Black must not do so, because he will need one additional external ko-threat (two in total) to win.

Neither the larger eye, nor the shared ko in the centre, are available for Black with this sub-variation.

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