(;AP[goproblems]AW[ad]AW[bc]AW[cb]AW[ba]AW[db]AW[eb]AW[ec]AW[ed]AW[dd]AW[cd]AB[cc]AB[bd]AB[be]AB[ae]AB[ce]AB[de]AB[ee]AB[fe]AB[fd]AB[fc]AB[fb]AB[ea]AB[da]C[Black to kill.](;B[ab];W[bb](;B[ac]C[RIGHT])(;B[fa];W[ac]))(;B[ca];W[fa])(;B[bb];W[ab])(;B[ac];W[ab](;B[ad];W[bb])(;B[bb]C[Only ko.])(;B[fa];W[ad]))(;B[aa];W[ab])(;B[fa];W[ac]))