(Referenced by 26; 74; 127; 136; 217; 218; 234; 248; 383; 448; 468; 510; 554; 387; 740; 743; 1119; 1148)

If Black has, carelessly, lost one liberty of his top right group - for example while trying to reduce White's territory (please assume the /-exchange here) - White can punish him by choosing what we call the "Punishment Semeai" - the combination of the Capture Variation (White captures Black's centre, and Black recaptures), and the Semeai Variation, wherein White will not play oki at , but will take a Black liberty with .

It would be a grave mistake to play at with (= ), because Black would answer at anyway, and it would now be White, who had lost a move.

Black needs six moves to occupy all the liberties, at the bottom, of White's -group (Black and are answered by White locally). Black's large group did not have more than six liberties at the very beginning, so Black loses the semeai by one move.