Sunday Problem #11

Published 16 Aug 2020 by antti (last edited 3 Sep 2020)

This is a slightly modified version of a problem that came up in the league game between bellicose and yosai.

Black to play.

Solution
Solution
Black 1 is the key point. White 2 is forced, but Black can then form the necessary eye space with the descent of 3. After 4–5, white 2 is captured in an oiotoshi, forming Black’s second eye.
Variation
After black 3, if White tries the placement of 4, Black then swallows the white stones whole with 5–7.
Failure
Simply capturing a white stone with black 1 is not enough. After white plays 2, the Black group forms a dead door group shape.

Comments (1)


antti wrote 1 month ago:

Solution added.