(;AB[ba]AB[bb]AB[cb]AB[dc]AB[dd]AB[ec]AB[fc]AB[fb]AB[ce]AB[df]AW[aa]AW[ab]AW[ac]AW[bc]AW[cc]AW[cd]AW[be]AB[bf]AB[bg]AW[db]AW[eb]C[black to kill]AB[hb]AP[goproblems]
(;B[ca];W[ae];B[ea];W[da];B[cb]C[well done :)RIGHT])
(;B[ae];W[ca]LB[bb:a]LB[ea:b]C[a and b are miai])
(;B[ea];W[ca]
(;B[bb];W[ae])
(;B[ae];W[bb]))
(;B[bd];W[ad]
(;B[af];W[ca])
(;B[ea];W[ca])))