Gokyo Shumyo, Section 1, Problem 1 / Solution

Main line: HashimotoUtaro
Variations: Dieter

[Diagram]
Main line  

This problem is an illustration of the proverb: "In a symmetrical position, play the symmetric point".

White must play W1 in order to live. Any other move fails.

B2 and B4 only go to show that White makes eyes at the marked points. B2 and B4 should be held in reserve as ko threats. Please note that they are losing ko threats.

[Diagram]
Var 1  

W1 fails.

After B2, White needs both a and b. White can't play two moves in a row, so her group is dead.

White starting a also fails; it the mirror image of W1.

[Diagram]
Var 2  

B2 and B4 make a bent four in the corner shape, killing White. We assume that White can't escape at a.


See also: Bent five on the second line in the corner

Back to Gokyo Shumyo Tsumego Series
Go to Problem 2


Gokyo Shumyo, Section 1, Problem 1 / Solution last edited by 62.158.83.199 on January 3, 2011 - 14:12
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