(;AB[bq]AB[cq]AB[dp]AB[eo]AB[co]AB[cn]AB[bm]AB[cl]AW[aq]AW[bp]AW[cp]AW[bo]AW[bn]AW[dq]AW[eq]AW[fq]C[Black to kill without ko.]AP[goproblems]
(;B[ar]
(;W[br];B[ap];W[cr];B[aq]C[RIGHT])
(;W[ao]
(;B[cr];W[bs]
(;B[am];W[br]
(;B[an]C[RIGHT])
(;B[cs];W[ds];B[as];W[dr];B[an];W[br];B[ap]C[RIGHT]))
(;B[ap]C[ko]))
(;B[br]
(;W[bs]
(;B[dr];W[cs];B[ds];W[er];B[am];W[es];B[an]C[RIGHT])
(;B[cs];W[dr];B[am];W[cr];B[ap]C[ko]))
(;W[cr];B[dr]C[RIGHT]))
(;B[ap]C[ko])
(;B[dr];W[cs];B[cr];W[bs];B[am]C[RIGHT])))
(;B[br]
(;W[bs];B[ar];W[ao]
(;B[dr];W[cs];B[ds];W[er];B[am];W[es];B[an]C[RIGHT])
(;B[cs];W[dr];B[am];W[cr];B[ap]C[ko]))
(;W[ar]
(;B[ap];W[ao];B[bs];W[cs];B[dr]C[RIGHT])
(;B[bs];W[cs];B[dr];W[er]
(;B[ap];W[ao];B[am];W[ds];B[an]C[RIGHT])
(;B[an];W[ap];B[am];W[ds];B[ao];W[cr];B[as]C[RIGHT])
(;B[ds];W[es];B[cr]C[RIGHT]))))
(;B[cr];W[br])
(;B[ap];W[ao]
(;B[ar];W[br];B[ap]C[ko])
(;B[br];W[bs];B[cs];W[ar];B[as];W[hp]C[ko])))