Problem	10370
Created	2007-09-11
Source	Life and death encyclopedia
Rating

Difficulty	0.4 kyu
Average Solve Time	42 secs
User Attempts	381 / 1216
Solve Ratio Rating	4 kyu
	rating history

(;AB[cb]AB[cc]AB[da]AB[eb]AB[fb]AB[gc]AB[gd]AB[fd]AB[ee]AB[de]AB[ce]AB[bf]AB[cg]AW[fc]AW[ec]AW[dc]AW[db]AW[dd]AW[cd]AW[bd]AW[be]AW[bc]C[Black to kill]AP[goproblems] (;B[ca];W[ba] (;B[ea];W[bb];B[gb];W[ae]) (;B[gb];W[bb];B[ea];W[ae]) (;B[bb];W[ab];B[aa]C[ko])) (;B[ea];W[ba] (;B[ca];W[bb];B[gb]) (;B[bb];W[ab] (;B[ca];W[gb];B[aa]C[ko]) (;B[gb];W[ca]))) (;B[bb];W[ab] (;B[ea];W[ba] (;B[ca];W[gb];B[aa]C[ko]) (;B[gb];W[ca])) (;B[ca];W[ba];B[aa]C[ko]) (;B[ba];W[ac] (;B[ae];W[aa]) (;B[ed];W[aa]) (;B[gb];W[aa] (;B[ea];W[ca];B[cb];W[bb];B[ba]C[ko]) (;B[ca];W[ea];B[ca];W[cb];B[da];W[ba]))) (;B[ac];W[ba];B[aa]C[ko])) (;B[ba] (;W[bb] (;B[gb];W[ab] (;B[ea];W[aa];B[ca]C[RIGHT]) (;B[ca]C[RIGHT];W[aa];B[ea]C[RIGHT])) (;B[ca] (;W[gb] (;B[ea];W[hb]) (;B[hb];W[ab];B[ga];W[aa];B[ea]C[RIGHT])) (;W[ab] (;B[gb];W[aa];B[ea]C[RIGHT]) (;B[ea] (;W[gb];B[hb];W[aa];B[ga]C[RIGHT]) (;W[aa];B[gb]C[RIGHT])))) (;B[ea] (;W[gb];B[hb];W[ab];B[ca];W[aa];B[ga]C[RIGHT]) (;W[ca];B[cb];W[gb];B[hb]C[RIGHT]) (;W[ab];B[gb]C[RIGHT];W[aa];B[ca]C[RIGHT])) (;B[ga] (;W[ca];B[cb]C[RIGHT]) (;W[ab];B[ca]C[RIGHT])) (;B[fa];W[ab];B[gb];W[aa]) (;B[hb]C[RIGHT])) (;W[gb];B[hb];W[bb];B[ga] (;W[ca];B[cb]C[RIGHT]) (;W[ab];B[ea] (;W[aa];B[ca]C[RIGHT]) (;W[ca];B[cb]C[RIGHT])))) (;B[ab];W[ba] (;B[ca];W[bb]) (;B[bb];W[ca];B[aa];W[ca];B[ba];W[ac] (;B[ea];W[gb];B[hb];W[ca];B[ga];W[cb]) (;B[ca];W[ea]))) (;B[gb];W[ba] (;B[bb];W[ab]) (;B[ca];W[bb];B[ea];W[ae])))