Problem 10934 goproblems.com


Author	Karen B	Created	2008-02-21
Difficulty	7 kyu (history)	Source	A problem from The Endgame by T. Ogawa & J. Davies.
AVG solve time	49 sec	Stars	4.22 (9 votes)
User attempts	601 / 1883	Collections	N/A
Genre	endgame	Your attempts	N/A
Similar problems
Created	2008-02-21
Source	A problem from The Endgame by T. Ogawa & J. Davies.
Stars	4.22 (9 votes)
Collections	N/A
Your attempts	N/A

(;AW[bc]AB[bd]AW[cc]AB[cd]AB[cf]AW[dd]AW[de]AB[dg]AB[di]AW[ec]AW[ef]AW[eg]AB[eh]C[White to make the best endgame play.]AP[goproblems] (;W[af];B[bf] (;W[ag];B[ad]C[White can do better.]) (;W[ae];B[ad]C[White can do better.]) (;W[bg];B[ad]C[White can do better.]) (;W[ce];B[be]C[White can do better.]) (;W[be];B[ce]C[White can do better.]) (;W[ac];B[ad]C[White can do better.]) (;W[ad] (;B[ag]C[CHOICE] (;W[ac];B[ae]C[White can do better.]) (;W[be];B[ce]C[White can do better.]) (;W[ce];B[be]C[White can do better.]) (;W[ae] (;B[cg]C[CHOICERIGHT]C[ Correct. This is best for White.CHOICERIGHT]) (;B[be]C[CHOICE];W[ac];B[bg]C[ Correct. This is best for White.RIGHT]))) (;B[be]C[CHOICE] (;W[ag];B[ae]C[White can do better.]) (;W[ac];B[ae]C[White can do better.]) (;W[bg];B[ae]C[White can do better.]) (;W[ae];B[ag];W[ac];B[cg]C[ Correct. This is best for White.RIGHT])))) (;W[ad] (;B[bf]C[CHOICE] (;W[ae];B[af]C[White can do better.]) (;W[be];B[ce]C[White can do better.] (;W[ae];B[af]C[White can do better.]) (;W[af];B[ag]C[White can do better.])) (;W[ce];B[be]C[White can do better.]) (;W[af] (;B[ag]C[CHOICE] (;W[ac];B[ae]C[White can do better.]) (;W[be];B[ce]C[White can do better.]) (;W[ce];B[be]C[White can do better.]) (;W[ae] (;B[cg]C[CHOICERIGHT]C[ Correct. This is best for White.CHOICERIGHT]) (;B[be]C[CHOICE];W[ac];B[cg]C[ Correct. This is best for White.RIGHT]))) (;B[be]C[CHOICE] (;W[ag];B[ae]C[White can do better.]) (;W[ac];B[ae]C[White can do better.]) (;W[bg];B[ae]C[White can do better.]) (;W[ae];B[ag];W[ac];B[cg]C[ Correct. This is best for White.RIGHT])))) (;B[be]C[CHOICE] (;W[ae];B[af]C[White can do better.]) (;W[ce];B[af]C[White can do better.]) (;W[bf];B[bg] (;W[ae];B[af]C[White can do better.]) (;W[ce];B[af]C[White can do better.]) (;W[af];B[ag]C[White can do better.]) (;W[ac];B[ae]C[White can do better.])) (;W[af] (;B[bf]C[CHOICE] (;W[ag];B[ae]C[White can do better.]) (;W[bg];B[ae]C[White can do better.]) (;W[ce];B[ae]C[White can do better.]) (;W[df];B[ae]LB[ac:A]LB[ag:B]LB[cg:1]C[The White atari at '1' runs into the double ko at 'A' and 'B,' which favors Black.]) (;W[ae];B[ag];W[ac];B[cg]C[ Correct. This is best for White.RIGHT])) (;B[bg]C[CHOICE] (;W[ae];B[ag]C[ Correct. This is best for White.RIGHT]) (;W[ag];B[ae]C[White can do better.]) (;W[bf];B[ag]C[White can do better.]) (;W[ce];B[ag]C[White can do better.]) (;W[ac];B[ae]C[White can do better.]))))) (;W[ce];B[be] (;W[ac];B[ae]C[White can do better.]) (;W[ad];B[af]C[White can do better.]) (;W[ae];B[af]C[White can do better.]) (;W[af];B[bf]C[White can do better.]) (;W[bg];B[bf]C[White can do better.]) (;W[bf];B[bg]C[White can do better.]) (;W[df];B[cg]C[White can do better.])) (;W[ae] (;B[bf]C[CHOICE] (;W[ad];B[af]C[White can do better.]) (;W[be];B[ce]C[White can do better.]) (;W[ce];B[be]C[White can do better.]) (;W[af];B[ad]C[White can do better.])) (;B[be]C[CHOICE] (;W[ad];B[af]C[White can do better.]) (;W[af];B[ad]C[White can do better.]) (;W[ce];B[af]C[White can do better.]) (;W[bf];B[bg]C[White can do better.]))) (;W[ac];B[bf]C[White can do better.]) (;W[be];B[ce];W[ad];B[bf] (;W[ae];B[af]C[White can do better.]) (;W[af];B[ag]C[White can do better.])) (;W[bf];B[ce]C[White can do better.]) (;W[cg];B[bf] (;W[df];B[dh] (;W[bh];B[bi]C[White can do better.]) (;W[bg];B[bh]C[White can do better.]) (;W[ch];B[bi]C[White can do better.]) (;W[ce];B[be]C[White can do better.])) (;W[ce];B[be] (;W[df];B[dh]C[White can do better.]) (;W[ch];B[dh] (;W[bi];B[df]C[This goes beyond the scope of the problem.]) (;W[df];B[bi]C[White can do better.]) (;W[bg];B[bi]C[White can do better.])))) (;W[df];B[cg]C[White can do better.]) (;W[ch];B[cg]C[White can do better.]))