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2006-11-27
Problem diagram.
Black plays.
Source:
Igo Hatsuyo-ron #68 : 300 year old problem set for student professionals.
Analysis:
Myron Souris
Solution follows
(or click here to download SGF)
Correct.
Black 3 (at 5) is the key move.
After Black 11, amazingly White cannot make
another eye along the top.
Download the SGF to see more variations than those presented here.
Also kills.
Black 7 also works. (Black 3 at 5.)
If White avoids the previous diagram by playing 8,
Black continues through 11.
White still has only one eye.
Black failure.
Note that Black cannot fill White's eye space
with 5. (Black 3 at 8.) After 8, White lives in seki.
Black failure.
Black 1 is the wrong move order. White shifts
to 2 to make a second eye. After White 4, A and
B are miai for the second eye.
Hits: 670
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