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2007-04-23
Problem diagram.
Black's response to White's marked play?
Source:
American Go Journal , Vol. 17, No. 2, June 1982, pp. 10-11
Richard Dolan in a 4 stone handicap game with Cha Min Su (Jimmy Cha)
Jimmy Cha commentary.
Solution follows
(or click here to download SGF)
Inferior.
Black 1 is OK, but Black goes astray with 3 in the game.
When White pulls out his 2 stones with 4, Black's group
suddenly becomes a target. White 6 is a nice clamping
tesuji that takes the vital point for Black's defense.
After White 12, Black is in trouble. Compare this
position with the correct variation below.
Better.
Black 3 is the correct follow up.
A good response is often to first lean on the
opponent opposite to the area of interest.
With 5, Black set up a sacrifice to keep sente.
With 13 Black finally goes back to capture the 2 stones
on the side. Black's corner is secure, because Black's
2 stones against the upper edge still have aji.
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