Beginner Exercise 221 / Attempts

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[Diagram]

Failure

This is a ko. White can do better.

[Diagram]

White cuts.

(6 at white+circle) B4 can't be at white+circle because then W4 at B4 would cut. This is very bad for black because white makes a B2 bomber. (BTW in case you couldn't tell: that's a joke; it's a hideous shape)

unkx80: Haha... Although I have set two problems with B2 bomber in mind, I did not have the B2 bomber in mind for this problem.

[Diagram]

Black lives in the corner

I think that B4 at a gives white more options, because then b would threaten to kill.

[Diagram]

Success?

What about this? There are many variations, but it seems that White can restrict Black to one eye on the right and prevent Black from connecting out. For example, if B2 at a, then W3 at b; if B2 at c, then W3 at d; and so on.


This is a copy of the living page "Beginner Exercise 221 / Attempts" at Sensei's Library.
(OC) 2012 the Authors, published under the OpenContent License V1.0.
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