Source:
Problem diagram.
Black plays.
James Davies, Ishi Press
Solution follows
(or click here to download SGF)
Failure.
Black 1 is the wrong direction.
Black 5 takes the corner along with some territory,
but White's capture of the marked stones and
White's enormous outside influence is a Black loss.
Black variation.
The tesuji sequence starting with Black 5 doesn't work here.
After White 12, Black cannot protect the 2 crucial cutting
points at A and B.
Correct.
The loose ladder from the direction of Black 1 works much better
Through the sequence to 13, Black doesn't make any appreciable
territory, but Black connects the side and corner stones. As
a result, Black reduces White's left side influence from that
in the other lines.
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