Xuanxuan Qijing Problem 347 / Attempts

P7A77: I think I have it...

[Diagram]

The setup...

Hmm, looking at it now, W10 is misplaced. White at a seems to kill. Difficult problem!

[Diagram]

...and execution.


Shaydwyrm: P7A77's solution left black short one liberty, so in an attempt to preserve that liberty:

[Diagram]

Play on the point of symmetry

B1 plays on the point of symmetry. W2 or a, taking away a liberty, is the best response I can find - the sequence from B3 can be played on whichever side white does not respond. Playing at B1 first allows black to avoid pushing out on both sides, which loses liberties.

[Diagram]

Escape!

Alex: This is what I was going to say, and I think it's correct. Few people would find this sort of tesuji in an actual game, but it's kind of obvious as a problem, since you know that a) it wouldn't be much of a problem if simply pushing out would work, b) it's a problem, so there must be a solution, and c) there really isn't anything else to consider.

Unless someone can refute this, I think it can be moved to the solutions page.


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