Gokyo Shumyo, Section 4, Problem 58 / Attempts

[Diagram]

Attempt

unkx80: Looks good, but...

[Diagram]

Attempt

unkx80: If White plays this way, the six stones on the right lives at the expense of the corner. Not sure whether this is accepted as a solution?

[Diagram]

Attempt

unkx80: B3 here does not seem to work.

[Diagram]

Attempt

unkx80: Note that B3 here allows White to create a ko.


[Diagram]

Attempt (Black not komaster)

Bill: When Black is komaster he plays for the ko in unkx80's diagram. Otherwise, I believe that B3 is correct.

[Diagram]

Continuation

Bill: Later, White has this sente sequence.

N. B.: If W1 at W3, B2 @ W1.

[Diagram]

Big corner

Bill: If W2, White can capture the black+circle stones, but in exchange Black takes a large corner with sente. Not good for White.


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