Source:
Problem diagram.
Black plays.
Side variation analysis:
Myron Souris
Solution follows
(or click here to download SGF)
Correct.
Black 1 is the connection tesuji.
White 2 is the best try.
The sequence up to 7 is forced.
White can try 8, but through 13, Black connects, but just barely!
White variation.
(Black 1 is still at White 10.)
Capturing the lone stone with White 8 results in a big loss.
Through Black 13, White can neither make life nor win the semeai.
Bad timing.
Black 1 is wrong. The order of moves is important!
Now White can dodge to 2.
If Black still wants to connect, the sequence to 6 is forced.
If Black prevents the capture with 7, White captures the 2
stones above with 8. Black loses big.
Black variation.
If Black varies from the previous diagram with 7 here,
White counter-cuts at 8. After White 10 the biggest part of
Black's groups is cut off.
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