Problem	15527
Created	2011-12-28
Source	KGS game
Rating

Difficulty	15.9 kyu
Average Solve Time	61 secs
User Attempts	2462 / 5941
Solve Ratio Rating	7 kyu
	rating history

Black played the marked stone in the endgame and White ignored it.

(;AW[ab]AW[bb]AW[bc]AW[cc]AW[cd]AW[db]AW[eb]AW[fa]AW[gb]AB[fb]AB[ac]AB[ad]AB[bd]AB[ae]AB[ce]AB[bf]AB[cf]AB[cg]AB[dc]AB[dd]AB[ed]AW[ec]AB[fc]AB[fd]AB[gd]AB[ef]AW[ag]AW[bg]AW[bh]AW[bi]AB[ch]AW[ci]AW[di]AB[hc]AB[ic]AB[jc]AB[jd]AB[kb]AB[ja]AW[jb]AW[ib]AW[hb]AW[ha]AW[gc]TR[ja]C[]AP[goproblems] (;B[ea] (;W[da] (;B[ka];W[ca];B[ia];W[ea];B[ga]C[RIGHT]) (;B[ca];W[ba];B[ka];W[ea];B[ia];W[cb];B[ga]C[RIGHT]) (;B[ba];W[ca];B[ka];W[ea];B[ia];W[aa];B[ga]C[RIGHT])) (;W[ca] (;B[ga];W[af] (;B[ia];W[be]C[Black can do better.]) (;B[be];W[fa];B[ka];W[da];B[ia];W[ea];B[ga]C[RIGHT])) (;B[ka];W[da];B[ia];W[ea];B[ga]C[RIGHT]))) (;B[ka];W[ea] (;B[ia];W[ga];B[ca];W[ba]) (;B[ca];W[ba];B[ia];W[ga])) (;B[ca] (;W[ba] (;B[ea] (;W[da];B[ka];W[ea];B[ia];W[cb];B[ga]C[RIGHT]) (;W[cb];B[ga];W[af];B[be];W[fa];B[ka];W[da];B[ia])) (;B[da];W[ea];B[ka];W[cb];B[ia];W[ga]) (;B[ka];W[ea];B[ia];W[ga])) (;W[da])) (;B[ba];W[ca];B[ea];W[da];B[ka];W[ea];B[ia];W[aa];B[ga]C[RIGHT]) (;B[cb];W[ca]) (;B[da];W[ca];B[ka];W[ea];B[ia];W[ga]) (;B[aa];W[ba];B[ea];W[da];B[ka];W[ea];B[ia];W[ga]) (;B[af];W[ea];B[ca];W[ba]))