TesujiFromGames2/Solution

Solution  

zinger: Black can kill white's group with a, so white needs to live. Playing at a works, but does nothing else. also lives, and is a point or two better. But is even better, as it threatens to make a second eye by descending to . If now , white lives with . This is an example of force before defending.

Velobici: makes life of the enclosed white stones. Locally follows, lest white gain more by playing at the location of . In the game, other moves on the board were more important than , so it is possible that white will get to play at .

The position comes from the fourth game of the Judan title match between Kobayashi Koichi (white) and Takemiya Masaki (black) played on 16 April 1992. Black won by resignation.

The position is discussed in the 53rd issue of The Magic of Go