(;AB[sb]AB[rc]AB[qd]AB[pc]AB[qe]AB[pf]AB[pg]AB[ph]AB[rh]AB[rg]AB[pj]AB[oj]AB[qk]AB[rk]AW[rj]AW[qi]AW[qh]AW[qg]AW[rf]AW[re]AW[rd]AW[sc]AW[sg]C[Black to kill. (without a ko)]AP[goproblems]
(;B[se]
(;W[sd];B[qf]C[RIGHT])
(;W[qf];B[sd]C[RIGHT]))
(;B[sh];W[se];B[sf]C[ko]))