The marked stone at B7 was a ko threat (the ko fight is not shown here). Black ignored B7 -- follow through and show that it really is a threat.
Author MrMoto
Difficulty 9 kyu (history)
AVG solve time 88 sec
User attempts 1753 / 5454
Genre life and death
Similar problems
Created 2004-11-09
Source adapted from a 6d KGS game
Stars 3.22  (18 votes)
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Your attempts N/A