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Capturing race exercise 9 / Solution
Sub-page of CapturingRaceExercise9
This is a eye versus eye capturing race with two big eyes. After White 1, both groups have 13 liberties. Black has 10 liberties inside his big eye, and he has the bigger eye, so he counts the 3 inside liberties. White has 7 eye liberties and 6 outside liberties. Given the size of the groups, we can safely assume White 1 to be sente. Black 2 wins the capturing race. Hereafter, White has 13 huge ko-threats, so she is virtually assured of winning any large ko that pops up in the game. Her result is thus "many ko-threats in sente".
Black 1, although looking slow, is a move that can "win a won game". It removes truckloads of aji by making two eyes for his group. In practice, Black will often play this move regardless, due to his failure (or sloth) to read the capturing race. This is a copy of the living page "Capturing race exercise 9 / Solution" at Sensei's Library. ![]() |