(;AB[bs]AB[cr]AB[cq]AB[dr]AB[dp]AB[ep]AB[gr]AB[hq]AB[ir]AB[jq]AB[hp]AB[gp]AB[fo]AB[gn]AB[gm]AB[fl]AB[el]AB[dl]AB[cm]AB[bn]AB[ao]AB[bl]AW[br]AW[bq]AW[cp]AW[bo]AW[co]AW[do]AW[eo]AW[en]AW[em]AW[fp]AW[fq]AW[fr]AW[gq]AW[hr]C[Black to kill]AP[goproblems]
(;B[gs]
(;W[dq]C[CHOICE]
(;B[eq]
(;W[er]C[CHOICE]
(;B[es];W[dq]C[]
(;B[ep]C[RIGHT])
(;B[fs];W[ep]))
(;B[dq];W[ds])
(;B[fs];W[dq]
(;B[ep];W[es])
(;B[es]))
(;B[ap];W[dq]))
(;W[fs];B[es];W[hs];B[er];W[cs];B[gr];W[gs];B[is]C[RIGHT]))
(;B[es];W[eq]LB[fs:a]LB[ap:b]C[W lives with a or b.])
(;B[er];W[eq]LB[ap:a]LB[fs:b]C[W lives with a or b.])
(;B[fs];W[eq]LB[es:a]LB[ap:b]C[W lives with a or b.]))
(;W[fs];B[eq]
(;W[hs];B[er];W[es];B[ds]C[RIGHT])
(;W[ds];B[es];W[hs];B[er]C[RIGHT]))
(;W[ap];B[an];W[ar];B[er]C[RIGHT])
(;W[er];B[es];W[dq];B[fs];W[eq];B[ap]C[RIGHT]))
(;B[hs];W[dq]
(;B[eq];W[er]
(;B[es];W[dq])
(;B[dq];W[ds])
(;B[fs];W[dq]))
(;B[es];W[eq]C[]
(;B[ap];W[fs];B[bp];W[cs];B[ar];W[as]C[ko])
(;B[fs];W[ap]
(;B[an];W[ar])
(;B[ar];W[an])))
(;B[er];W[eq]C[]
(;B[fs];W[ap])
(;B[ap]
(;W[fs]
(;B[ar];W[bp];B[aq];W[cs])
(;B[bp];W[cs];B[ar];W[as]C[ko]))
(;W[es]
(;B[bp];W[cs])
(;B[fs];W[gs]C[ko]))
(;W[cs];B[fs];W[as];B[es];W[aq])))
(;B[ap];W[er]
(;B[cs];W[es])
(;B[es];W[fs])
(;B[bp];W[ds])
(;B[ar];W[ds]))
(;B[aq];W[bp]
(;B[ar];W[er];B[ap];W[cs];B[ds];W[es])
(;B[er];W[eq];B[fs];W[ar])
(;B[eq];W[er];B[dq];W[ds];B[ap];W[ar]))
(;B[fs];W[eq]
(;B[es])
(;B[ap];W[es]C[ko at most])))
(;B[er];W[eq]
(;B[dq];W[gs])
(;B[hs];W[dq]))
(;B[es];W[gs]
(;B[fs];W[er])
(;B[eq];W[er])
(;B[er];W[eq];B[dq];W[cs])
(;B[dq];W[er])
(;B[cs];W[er])
(;B[ap];W[dq]))
(;B[ap];W[dq]
(;B[es];W[gs])
(;B[eq];W[er])
(;B[bp];W[gs])
(;B[hs])
(;B[er];W[eq]
(;B[hs])
(;B[bp];W[gs])))
(;B[dq];W[gs])
(;B[fs];W[gs])
(;B[eq];W[er])
(;B[ar];W[ap]
(;B[hs];W[dq])
(;B[dq];W[gs])
(;B[an];W[gs])
(;B[eq];W[er])
(;B[es];W[gs]))
(;B[ds];W[gs])
(;B[aq];W[bp]
(;B[gs];W[fs]
(;B[hs];W[er])
(;B[eq];W[hs])
(;B[ar];W[ap]))
(;B[hs];W[dq])))