Sunday Problem #73

Published 24 Oct 2021 by antti (last edited 6 Nov 2021)

tags: tsumego, sunday-problem

I arranged this problem from a shape that came up in the league game between Zdzieli and Ethelor.

Black to play.

Solution

Failure (1)
The attachment of black 1 looks like a tesuji, but is not quite enough to kill. White is able to form two eyes with his response of 2–6.

Failure (2)
Following, Black might consider cutting White with 2 and on. However, this is still not an optimal result because half of the white group can live with the moves up to 6.

Solution
Black should start with the hane of 1. White is able to take hold of this stone with 2 and 4, but after black 5 the whole white group is unable to form two eyes and therefore ends up captured.