Joachim's Ko-Semeai - Putting the Cart
Before the Horse (2013 - 2015)
E3 - Black's Atari on the Upper Edge
as a Ko-Threat
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: Black is unable to give atari at . White wins the semeai outright. |
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: Black's atari on the upper edge is a valid ko-threat, only if White's centre group has less than four liberties, or White has played already. |
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