Problem	12125
Created	2008-12-22
Source	Cho Chikun - Elementary Problems
Rating

Difficulty	23.5 kyu
Average Solve Time	29 secs
User Attempts	6900 / 12022
Solve Ratio Rating	12 kyu
	rating history

Black to kill - or at least a ko

(;AB[ab]AB[aa]AB[ba]AB[ca]AB[eb]AB[ec]AB[cc]AB[dc]AB[cd]AB[ce]AB[be]AW[ad]AW[bd]AW[bc]AW[bb]AW[cb]AW[db]AW[da]AP[goproblems] (;B[ea];W[ac] (;B[ba];W[aa] (;B[ab]C[RIGHT]) (;B[ae];W[ca]C[CHOICE])) (;B[aa];W[ba]C[CHOICE]) (;B[ab];W[aa]C[CHOICE]) (;B[ca];W[ba]C[CHOICE])) (;B[ae];W[ac] (;B[ba];W[aa];B[ab]C[RIGHT]) (;B[aa];W[ba]C[CHOICE]) (;B[ab];W[aa]C[CHOICE]) (;B[ca];W[ba]C[CHOICE])))