Gokyo Shumyo, Section 1, Problem 91 / Attempts

[Diagram]

White to live

Jasonred And a and b are miai?

unkx80: This is the solution, but the above comment is wrong.


catch22: I did not immediately see why W1 below did not work, so I thought I'd add the refutation.

[Diagram]

Nearly works, but not quite

[Diagram]

B6 captures


[Diagram]

White to live

cutting at W1 followed by the cut at W3, in place of White cutting at the location of B4, fails.


black resistance?

[Diagram]

White to live (a / b miai for kill)

tapir: I wonder about B2, can't Black play like in this diagram (avoiding the shortage of liberties). Likely I am hallucinating, please point out where. (I noted a different setup in the similar classical problems which would allow to capture at a in sente.)

[Diagram]

White to live

unkx80: After W5 the black corner is not yet alive, so black probably don't have time to turn the top side into a false eye.

tapir: W9 should kill. (Actually this is a typical mistake for me. Not looking at my own eyeshape.)

[Diagram]

White to live

unkx80: If you want to be doubly sure, this works as well. Corner is a L-group which is not yet alive.


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