(;AB[dp]AW[cn]AB[fq]AW[bp]AB[cm]AW[dm]AB[cl]AW[dl]AB[bn]AW[bo]AB[dn]AW[co]AB[dk]AW[ck]AB[bk]AW[cj]AB[ek]AW[fl]AB[bj]AW[ci]AB[bi]AW[ch]AB[do]AW[fm]AB[bm]AW[cq]AB[dq]AB[al]AW[ao]AB[an]AW[fj]C[Black to kill.CHOICE]AP[goproblems]
(;B[br]C[];W[cr];B[bq];W[cp]
(;B[bs]C[RIGHT])
(;B[dr];W[bs]
(;B[aq];W[ar]C[Ko.])
(;B[ar];W[aq]C[Ko.]))
(;B[aq];W[bs]
(;B[dr];W[ar]C[Ko.])
(;B[ar];W[dr];B[er];W[ds])
(;B[as];W[ar]C[Ko.]))
(;B[ar];W[aq];B[ap];W[bs]
(;B[dr];W[aq]C[Ko.])
(;B[aq];W[as]))
(;B[cs];W[bs]
(;B[as];W[ds];B[dr];W[bs]C[Ko])
(;B[dr];W[ds]
(;B[aq];W[ar]C[Ko])
(;B[ar];W[aq]C[Ko])
(;B[es];W[ar]))
(;B[ar];W[aq];B[ap];W[ds]
(;B[dr];W[aq]C[Ko])
(;B[aq];W[dr]))
(;B[aq];W[ds]
(;B[dr];W[ar]C[Ko])
(;B[ar];W[dr])
(;B[as];W[ar]C[Ko]))))
(;B[cr];W[br]
(;B[bs];W[dr])
(;B[dr];W[aq]
(;B[cp];W[bs];B[bq]C[Ko.])
(;B[bs];W[cp];B[ar];W[as]C[Ko.])))
(;B[dr];W[cr]
(;B[br];W[bs])
(;B[aq];W[ar];B[br];W[bs]C[Ko.]))
(;B[bq];W[br]
(;B[aq];W[ar]
(;B[cr];W[ap]
(;B[bq];W[aq]
(;B[dr]C[RIGHT])
(;B[cp];W[dr]C[Ko])
(;B[bs];W[dr])
(;B[ds]C[RIGHT])
(;B[er]C[RIGHT]))
(;B[cp];W[bq]
(;B[dr];W[bs])
(;B[bs];W[dr]))
(;B[bs];W[dr])
(;B[dr]C[RIGHT])
(;B[ds]C[RIGHT])
(;B[er]C[RIGHT]))
(;B[cp];W[ap]
(;B[bq];W[aq]
(;B[cr];W[dr]C[Ko])
(;B[cs];W[cr])
(;B[dr];W[cr]))
(;B[cr];W[bq]
(;B[dr];W[bs])
(;B[bs];W[dr])))
(;B[dr];W[cr]))
(;B[cr];W[aq]
(;B[cp];W[bq]
(;B[bs];W[dr])
(;B[dr];W[bs]))
(;B[bs];W[dr])
(;B[dr];W[bs]))
(;B[cp];W[aq];B[cr];W[bq]
(;B[bs];W[dr])
(;B[dr];W[bs]))))