100ChallengingGoProblemsFor100DaysOfStudy/Problem 32

Problem  

White to play in this position where Black has numerical superiority.

Clearly we're looking at a way to capture the marked cutting stone or otherwise make shape by using that potential.

A is an obvious ladder breaker but likely not the tesuji we're looking for. Also, Black can probably safely ignore

Tesuji  

Marvelous move! is at A so that Black has to either allow a ponnuki at B or a capture at C

Alternative  

The difference with my choice is that is much more devastating if Black reinforces at .

KataGo  

KataGo comes up with this sequence. The idea is similar: if continues the ladder, White will cut off & .

Next continues at A.

KataGo (1)  

KataGo needs to be fed the tesuji in order to appreciate it at fewer playouts. It then offers as a resistance. White now continues with or A. This situation requires many more playouts.