Joachim's Ko-Semeai - Putting the Cart
Before the Horse (2013 - 2015)
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FLAG 7a: ( 1028) This will have no effect on the outcome, Black will still need one external ko-threat. An important precondition is that there is no way that Black could gain a move, or at least one ko-threat, in the upper left corner by diverting from the main line sequence there. |
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FLAG 7b: ( 1034) However, he must not do so, because White would win unconditionally. |
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