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  2007-09-24

Problem diagram.
Black plays.

Source:
Qi Jing Zhong Miao #205 , an ancient collection of mostly kyu level life and death problems. This problem is amazingly subtle for such a common simple position!

Analysis:
   Myron Souris

Solution follows    (or click here to download SGF)






























Correct.
Black 1 looks like a wasted move. But amazingly, through 7, Black snatches a ko out of what initially appeared hopeless. This kind of corner ko sequence is well worth remembering.


White variation.
Trying to avoid the ko with White 6 does not work. Black 7 merely sets up the ko in another place.


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