Squeeze tesuji in joseki

    Keywords: Joseki

Table of contents Table of diagrams
Does Black need to defend the cut at ''a''?
White cuts
White tries to break free
Black squeezes
Black squeezes
Reference position
Net
Ladder

This page serves as a comprehensive discussion of the squeeze in a reference position, which is the standard 3-3 point invasion joseki.

Reading question

[Diagram]
Does Black need to defend the cut at a?  

The question is whether Black needs to defend against the cut at a. Superficially this may look like a ladder question, but...

[Diagram]
White cuts  

Black has a clever defense if White cuts. He starts with an atari at B2 and then plays a net at B4. There is no escape at a or b.

[Diagram]
White tries to break free  

White plays atari at W1, and again at W3. The plan is to break free at b if Black a.

[Diagram]
Black squeezes  

However Black now plays a squeeze tesuji at B1.

[Diagram]
Black squeezes  

After B3, it is clear that the white cut didn't work.


Reference position

[Diagram]
Reference position  

For reference, the starting position is the result of this rather common san-san invasion under the black hoshi stone.


Alternatives

[Diagram]
Net  

Another reply to the white cut is the net of B2. This also captures W1, but the firmer capture through the squeeze tesuji is better. See Lessons in the fundamentals of Go.

[Diagram]
Ladder  

The ladder is an even worse way to capture W1. Generally, capturing in a net (or another direct method such as the squeeze) is better than capturing in a ladder, because a ladder allows the opponent to play a ladder breaker, basically getting a free move elsewhere. See Net versus ladder.


Squeeze tesuji in joseki last edited by hnishy on May 23, 2018 - 14:42
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