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Oiotoshi
Path: Tesuji · Prev: ThrowIn · Next: EyeStealingTesuji
Difficulty: Beginner Keywords: Tesuji, Tactics, Go term
The Japanese term oi-otoshi (chasing and capturing, or, perhaps, chasing down) describes a situation where a stone or group of stones is put into atari in such a way that there is no escape. This occurs usually when the only way to save such a group is to connect, and that the resulting group is still in atari. Hence the related English terminology, connect-and-die, and the Chinese 接不归 (jie1 bu4 gui1) (unable to connect back). The term oiotoshi can also describe the process of, or preliminaries such as throw-ins, setting up such a situation. Oiotoshi is also known under the terms connect and die and serial atari. Please note: oi-otoshi differs from connect-and-die in one way. Oi-otoshi is a form of sacrifice, a method of destroying eye shape, or using shortage of liberties to prevent connection while connect-and-die only covers shortage of liberties. It also reflects the opposite point of view. Example 1
After Example 2(from IGS)
The three Black Example 3(from IGS)
After throwing in twice with (This is Oiotoshi Problem 1 in Segoe and Go Seigen's Tesuji Dictionary.) Example 4(modified from The Second Book of Go)
So White shouldn't have run away at See also
AuthorsPath: Tesuji · Prev: ThrowIn · Next: EyeStealingTesuji This is a copy of the living page "Oiotoshi" at Sensei's Library. ![]() |