Source:
Problem diagram.
White plays.
Analysis:
Myron Souris
Can a pro make a mistake on a kyu level tsumego exercise?!
You decide.
Solution follows
(or click here to download SGF)
A mistake?
The solution says that White 1 is the vital point,
but only gives the attack at Black 2. But with 3, White
easily makes a 2nd eye on the left. The solution
says that White lives.
Black refutation?
Instead, Black 2 seems to kill White! White can try to
catch Black in a shortage of liberties with 3, but
with Black 4, White is the one in a shortage of liberties.
Without being able to atari from the inside, White dies.
See the SGF for other possible White defenses.
Correct solution?
White 1 seems to be the correct move to solve the problem.
Black can jump to 2, but with 3, White has a direct ko.
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