Practical Endgame Test 3 / Solution - Black

B's Choice  

This problem is best understood with reference to White's opportunities (see /Solution - White). White has two major sente plays, in the upper left and upper right. The upper left play threatens the life of the black stones but is only three points different from a black play. The upper right is therefore the larger play.

White's sente  

White plays through the rest of the plays described in the white solution.

Finishing up  

Black could play hane at 4 instead of 3. But since he has to play 3 and 5 and then connect twice (at 6 and 7), he can not win the resulting ko so there is no point.

Black has 31 points to White's 28. This time B+3.

--DaveSigaty