Xuanxuan Qijing Problem 34 / Solution

Point of symmetry  

In a sense this is a symmetrical shape because 'x' and 'y' plays the same role - sente for black.

White has two obvious choices to try to make the second eye, namely 'a' and 'b'.

Attempt 'a'


Black connects B1 out with the sente at B3. Next, B5 takes away whites eye space. White can't capture the black stones with W6.


White can try to struggle more, but it doesn't work.


Attempt 'b'


W2 is met by B3. If white tries W4 here, again, black plays the sente move at B5, and then takes away white's eye space with B7.


W4 here is countered by B5; white can't get both 'x' and 'y'. Alternatively, black can play B5 at 'x', but the aji is slightly worse on the right side.


Finally, for W4 here, black just make atari and connect.



Making atari first doesn't work, next white gets an eye with either 'x' or 'y'.


B1 here, white tries to make an eye with W2. B5 is a smart move that destroys the eye, but white makes an eye with W8.

Another failure  

Maybe this is too obvious.

Xuanxuan Qijing Problem 34 / Solution last edited by on December 3, 2012 - 19:02
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