Joachim's Ko-Semeai - Putting the Cart
Before the Horse (2013 - 2015)
0b - If We Wanted That Black Wins
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///: : ( 942) For the ensuing ko-fight, Black needs one external ko-threat, to be played with , to win.
!!! Here in this chapter, we will display the relevant external ko-threat of both sides, which are decisive for the outcome of the sub-variation, in the top left corner. !!! |
As a matter of course, "Black needs XY external ko-threats" has to be understood as "Black needs XY external ko-threats more than White". Here in this diagram, White really has valid ko-threats in the upper left corner, starting with . !!! In order to simplify our presentation, and to ensure transferability to other positions (where White might have less ko-threats than here), we will not "use" these White ko-threats (which really would be available on the board) throughout this entire chapter, but display these moves in the top left corner, too. !!! |
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: Black could win the game, only if he had at least one ko-threat more than White. But please remember that White - in the problem - really had several ko-threats in the upper left corner, starting with a move at . Thus, Black never had a chance to win this ko-fight. |
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