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Eternal Life
Path: LifeAndDeath · Prev: DoorGroup · Next: ApproachingALifeAndDeathProblemTheRightWay Path: SecondCourseOnKo · Prev: BentFourInTheCornerIsDead · Next: RepeatingPositions
Keywords: Ko, Rules
Chinese: 长生 Eternal life is yet another situation where a void game (no result: neither player wins, but neither player loses) can occur, under rulesets which permit such a thing. Several special rules, such as superko and the Ing Ko Rule, forbid the recurring sequence to occur. However, eternal life is so rare in games that if one occurs, a Chinese Go text says that: You should buy fish, vegetables, meat and wine And have a good party to celebrate yourself Of course, it's an exaggeration... Example
This is the situation to begin with.
White makes a throw in at
White has the option of making seki:
Q: But suppose White needs to kill Black in order to win, and Black would never let go of his group, then eternal life occurs. A: Strictly speaking the position after White 1 in the Seki diagram is not seki, but a hyperactive position. However, when it is correct to make the play, it will almost always become seki. There was some excitement about this thirty years ago when a variation of the kado joseki played in a title game Sakata - Yamabe could have led to chosei. SL material External references
Warp: In the game 2 of the 49th Honinbo league between Rin Kaiho (black) and Komatsu Hideki, played on 1993-09-02, a very curious eternal life variant involving a ko happened, which resulted in the game being voided. I think it was called an "eternal ko". The position leading to this happened in the lower left corner of the board, shown in the diagram (it's black's turn).
Black captures the ko with
Now, after white captures the ko with
Instead of The game was declared void. Authors
Path: LifeAndDeath · Prev: DoorGroup · Next: ApproachingALifeAndDeathProblemTheRightWay Path: SecondCourseOnKo · Prev: BentFourInTheCornerIsDead · Next: RepeatingPositions This is a copy of the living page "Eternal Life" at Sensei's Library. ![]() |