Sunday Problem #60
Published 25 Jul 2021 by antti
(last edited 8 Aug 2021)
This problem is based on a shape that appeared in a recent ngd league game between Sanderbaduk and irglbriz; July league subscribers can view the game here.
Black to play.
Solution
Black cannot form two eyes locally, so she has to depend on White’s outer shape problems. 1–2 is a useful preparation, after which black 3 attempts to break through.
After 1–3, White cannot simply block with 4; if he does, then 5–9 quickly capture White’s cutting stones in a snapback.
After 1–3, if White wants to make life as difficult for Black as possible (pun intended), he should extend with 4 and 6, trying to contain the Black group on a larger scale. This, however, lets Black set up a living sequence with 7–10, and then . . .
. . . with 11–19. Finally, two white stones end up captured and form Black’s second (and third) eye.
Comments (1)
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Recent comments
Solution added. Sorry for the one-week delay!