Problem	3789
Created	2004-01-23
Source
Rating

Difficulty	26.8 kyu
Average Solve Time	19 secs
User Attempts	28563 / 38915
Solve Ratio Rating	20 kyu
	rating history

(;AB[ab]AB[bc]AB[cb]AB[ba]AW[ae]AW[be]AW[bd]AW[cd]AW[cc]AW[dc]AW[db]AW[eb]AW[ea]AP[goproblems] (;W[ac];B[ad]MA[ac] (;W[ca];B[da]C[]MA[ca] (;W[ac]C[Double Ko, black cannot win them bothRIGHT]) (;W[ca]C[NOTTHIS])) (;W[da];B[ca]C[Ko is not best]) (;W[ac]C[NOTTHIS])) (;W[ca];B[da]MA[ca] (;W[ac];B[ad]MA[ac] (;W[ca]C[RIGHT]) (;W[ac]C[NOTTHIS])) (;W[ad];B[ac]C[Ko is not best]) (;W[ca]C[NOTTHIS])) (;W[ad];B[ac] (;W[ca];B[da]C[Ko is not best]) (;W[da];B[ca]C[Black is alive])) (;W[da];B[ca] (;W[ac];B[ad]C[Ko is not best]) (;W[ad];B[ac]C[Black is alive])))