Joachim's Ko-Semeai - Putting the Cart
Before the Horse (2013 - 2015)
2b - White's Gote-Sente-Combination
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( White did not play the gote move at Black has one ko-threat in the hanezeki, at |
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Please note that there are no valid ko-threats in the nakade, despite Black has not connected the hanezeki's tail yet. Black will need two moves in a row to decide the situation on the left side in his favour. But in the meantime, his top right group will get below the Punishment Semeai Liberty Level. |
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With the double throw-in, we can conclude that the number of exceeding Black ko-threats (over White ones) to win the ko-fight is one. This is independent from what has happened in the upper part of the hanezeki, if White captured the ko at the moment, when her centre group is reduced to five liberties. |
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Using the gote-sente-combination of |

978
163
, but at
. Thereafter, the exchange of
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, but which is suicidal here, and so can be utilized "late" only.
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in the hanezeki.
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, in the hanezeki does not really make a difference.
