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InvasionItinerary

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Joseki
33PointInvasionJo...
4464Enclosure

 

3-3 Point Invasion with Ikken-Tobi
Path: InvasionItinerary   · Prev: 33PointInvasionWithKeima   · Next: SanSanInvasionOfHoshi
  Difficulty: Advanced   Keywords: Question

[Diagram]
Diag.: Joseki

Jesusin: This is a diagram from the book "Get strong at invading". It is a middle game joseki. There are other possibilities for Black 4.

The text says White is alive after the sequence.

But I do not seem to find this group alive. Here are my variations:


[Diagram]
Diag.: Continuation 1, is White alive?

Up to 9 White is dead. If White a next, then Black b.

What am I missing?



Charles Matthews Try 6 at 7, as in Continuation 2, but after playing White b, Black a. Black is short of liberties. If Black is very strong locally it may be possible to kill White after White comes out at 8. For example, the game between Fujisawa Hideyuki and Go Seigen, 1973-11-18.


[Diagram]
Diag.: Continuation 2, is White alive?

Up to 9 White is dead. If White a next, then Black b.

What am I missing?

Andrew Walkingshaw: What if, instead of a...


[Diagram]
Diag.: Continuation 2, White makes two eyes

White plays at 1 here, living locally through 5. If, instead, Black tries the play at 2 below:


[Diagram]
Diag.: Continuation 2c, connect and die (6 at 3)

Whiet can play as shown here, catching the outside stones and making an eye on the edge.



Jesusin: Thank you very much, Charles and Andrew.

For the sake of completeness I will show the other variation for Black 4 in the first diagram:

[Diagram]
Diag.: Joseki II, part 1

[Diagram]
Diag.: Joseki II, part 2


Path: InvasionItinerary   · Prev: 33PointInvasionWithKeima   · Next: SanSanInvasionOfHoshi
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