torazu sanmoku

  Difficulty: Expert   Keywords: Rules, Go term

Chinese: 不提三目 (bu4 ti2 san1 mu4)
Japanese: 取らず三目 (torazu sanmoku)
Korean:

Torazu sanmoku = Three points without capturing.

The traditional Japanese ruling (by Honinbo Shuwa, according to the Esperanto link below) was that this corner position was worth 3 points for Black at the end, without his having to capture the marked white stones. The Japanese '89 rules make this seki if it is left on the board at the end of the game.

[Diagram]

Torazu sanmoku



Mathematical Go defends the 3-point ruling in terms of combinatorial game theory. See derivation.


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Discussion

Derivation


See also:


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