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2007-09-03
Problem diagram.
White plays.
Source:
American Go Journal , Vol. 18, No. 1, 1983, pp. 15-17
The Professional Eye
Jimmy Cha 4p
Solution follows
(or click here to download SGF)
Correct.
White 1 is the urgent point that effectively uses the stones
in the upper right. White builds territory and can aim at
the invasion at A. Next, Black will probably play at B or
probe with C.
White mistake.
White 1 is a mistake in direction. Black immediately pounces
with the attachment at 2. Through the continuation up to White 9,
Black has built up a position in sente. Make sure that you always
play this way in your games against this kind of corner formation.
Black variation.
Responding to White 1 with Black 2 is a mistake. White can now
go back to play on the urgent point at B. Note that if Black
insists on playing in the lower left, a play at A leaves less
bad aji in the corner.
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