33 Point Invasion Query 8

    Keywords: Life & Death

Let's say that W wants to invade a relatively strong black position at the 33 point. How does W live (regardless of whether giving black the additional outward thickness is a good idea).

[Diagram]

white wants certain life

From "Intermediate Level Power Builder, Vol I", white plays W3 rather than Wa Bb to avoid a ko.

[Diagram]

b takes an eye, but w escapes

[Diagram]

b defends, w makes life

A move by black at B1, or at any of the circled points cuts off white's escape and requires white to make life with W2.

[Diagram]

now what?

Suppose black resists? How best to proceed now for white? Can white make life without ko?

[Diagram]

now what?

unkx80: Block at W5 followed by jumping out at W9. With a (or b) and c more or less miai, intuition tells me that White should have no problems living.

[Diagram]

white wants certain life

What to do when black plays B4 tsuke instead of at a? Is there a way for white to live unconditionally or escape?

[Diagram]

Black tries to kill

Bill: Assuming W1 - W5, Black can hold White to one eye in the corner, starting with B6.

[Diagram]

White escapes

B2 @ black+circle.

Bill: Then, after W1 - B2 and W3 - B4, White escapes with W5 - W9.


Bob McGuigan: See joseki-related life-and-death example 5 for some other variations.


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