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Throw In
  Difficulty: Beginner   Keywords: Tesuji, Shape

A Throw-in is a sacrifice play in which at least one stone is captured by the opponent, in order to destroy eyeshape or reduce liberties. (A throw-in is different from a nakade. A nakade is a play inside a real eye. A throw-in makes or maintains a false eye.)

[Diagram]
Diag.: Throw-in

White 1, trying to squeeze one extra point out of black is a mistake. Black can throw in at 2, and the eye here is false. Even if white takes at 'a', black does not have to respond, as the eye at 2 will never become real. White 1 at 2 would have lived.


[Diagram]
Diag.: Throw-in (4 at 1)

In this example, a throw-in is used to remove the eye which white could have made here. A throw-in is often the first move in a snap back, damezumari or a squeeze tesuji.

--MortenPahle (10kyu)



A very common and useful technique is the ThrowInUnderThree. --Dieter



This is a copy of the living page "Throw In" at Sensei's Library.
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