Sunday Problem #64

Published 22 Aug 2021 by antti (last edited 30 Aug 2021)

This gem of a problem is based on a shape from Guanzi Pu.

Black to play.

Solution (1)
This problem is difficult to solve if you’re not familiar with the tesuji of black 1. This sets up two ways for Black to get the forcing moves necessary to form life in the corner: 2–11 here is the first of the two ways.
Solution (2)
If White instead blocks with 2 here, Black bumps with 3, eventually forcing White to reinforce his shape with 6. This lets Black form two eyes with for example 7.

Comments (1)

antti wrote 4 weeks ago:

Solution added.