(;AB[ao]AB[bo]AB[co]AB[do]AB[eo]AB[fo]AB[fp]AB[fq]AB[fr]AB[fs]AB[eq]AB[dr]AB[ds]AW[ap]AW[bp]AW[cp]AW[dp]AW[ep]AW[dq]AW[er]AW[cr]C[Black to kill]AP[goproblems]
(;B[bs]
(;W[cs]C[CHOICE]
(;B[br]
(;W[es]C[CHOICE]
(;B[dr]
(;W[ds]C[CHOICE]
(;B[bq]C[];W[ar]
(;B[cq]C[RIGHT])
(;B[aq]C[seki]))
(;B[aq];W[bq])
(;B[ar];W[bq]))
(;W[bq];B[ds]C[RIGHT])
(;W[cq];B[ds];W[ar];B[bq]C[RIGHT]))
(;B[bq];W[dr]LB[aq:1]LB[ar:2]C[seki])
(;B[ar];W[bq])
(;B[aq];W[bq])
(;B[cq];W[bq]))
(;W[cq];B[es]C[];W[ar];B[bq]C[RIGHT]))
(;B[es];W[br])
(;B[bq];W[br]
(;B[ar];W[es])
(;B[es];W[ar]))
(;B[ar];W[es]))
(;W[br];B[cs]C[RIGHT]))
(;B[es];W[br]
(;B[ar];W[bq])
(;B[cs];W[bs])
(;B[bs];W[ar]))
(;B[cs];W[bs]
(;B[es];W[br])
(;B[br];W[es]))
(;B[br];W[bs]
(;B[bq];W[ar])
(;B[ar];W[bq]C[seki];B[es];W[cs])
(;B[aq];W[ar]C[ko])
(;B[cs])
(;B[es];W[ar]))
(;B[ar];W[cs]
(;B[es];W[bq];B[br];W[bs]C[seki])
(;B[bq];W[es]
(;B[cq];W[dr])
(;B[dr];W[ds];B[cq];W[br]))
(;B[br];W[bq]
(;B[es])
(;B[bs];W[es])))
(;B[bq];W[br]
(;B[ar];W[cs]
(;B[es];W[cq]
(;B[bs]C[];W[as]C[ko])
(;B[aq];W[as]))
(;B[aq];W[es])
(;B[bs]))
(;B[bs];W[cs])
(;B[cs];W[bs]
(;B[aq];W[es])
(;B[es];W[aq]))
(;B[aq];W[cq]
(;B[ar];W[as]
(;B[aq];W[cs])
(;B[cs];W[aq]))
(;B[bs];W[as]
(;B[ar];W[as]
(;B[ar];W[cs]
(;B[es];W[as]C[ko])
(;B[aq];W[es]))
(;B[es];W[cs]))
(;B[es];W[cs]))
(;B[cs];W[bs]))))