(;AB[dp]AB[cp]AB[co]AB[cn]AB[cl]AB[eq]AB[fq]AB[gq]AB[bq]AB[aq]AW[cq]AW[dq]AW[br]AW[bp]AW[bo]AB[hq]AB[hr]C[Black to kill]AP[goproblems]
(;B[ar]
(;W[ap]
(;B[cr]
(;W[as]
(;B[dr]C[CHOICERIGHT])
(;B[bq];W[dr]))
(;W[dr];B[bs]C[RIGHT]))
(;B[dr];W[cr]
(;B[cs];W[as])
(;B[er];W[as])
(;B[bn];W[as]))
(;B[bs];W[as])
(;B[bn];W[as]))
(;W[dr];B[bn];W[cs];B[ao];W[er];B[es]C[RIGHT])
(;W[cr];B[bn];W[bs];B[ao];W[er];B[ds]C[RIGHT])
(;W[bs];B[dr];W[cr];B[bn];W[er];B[ds]C[RIGHT]))
(;B[dr];W[cr]
(;B[ar];W[ap])
(;B[bn];W[ar]
(;B[cs];W[er]C[ko])
(;B[bs];W[cs]))
(;B[cs];W[er]C[ko is not the solution])
(;B[er];W[ar])
(;B[bs];W[ar];B[cs];W[ap];B[bn];W[er]C[ko is not the solution]))
(;B[bn];W[ar])
(;B[cr];W[dr]
(;B[cs];W[ds])
(;B[ar];W[cs];B[bn];W[as]C[ko])
(;B[ds];W[cs])
(;B[bs];W[cs]C[ko is not the solution]))
(;B[cs];W[ar]C[thanks to blbnCHOICE]
(;B[dr];W[ap]
(;B[bn];W[bs])
(;B[bs];W[bn])
(;B[cr];W[bq])
(;B[bq];W[cr]
(;B[bs];W[bn])
(;B[bn];W[bs])))
(;B[cr];W[dr]
(;B[ds];W[ap]
(;B[es];W[bq])
(;B[er];W[bq])
(;B[bq];W[bs];B[er];W[bn])
(;B[bs];W[es]))
(;B[er];W[ap]
(;B[bq];W[bs];B[ds];W[bn])
(;B[ds];W[bq]))
(;B[es];W[ap])
(;B[bn];W[ds]))
(;B[bs];W[er]
(;B[cr];W[ap]
(;B[dr];W[bq])
(;B[bq];W[dr])
(;B[es];W[bq]))
(;B[dr];W[ap]
(;B[es];W[bn])
(;B[bn];W[cr]C[ko]))
(;B[es];W[ap];B[bn];W[fs]
(;B[ds];W[fr])
(;B[dr];W[ds]C[ko]))
(;B[bn];W[ds])
(;B[ds];W[es]))
(;B[es];W[ap]
(;B[bn];W[bs])
(;B[bs];W[bn])))
(;B[ds];W[er]
(;B[dr];W[cr])
(;B[bs];W[cr])
(;B[cr];W[dr];B[bs];W[cs]C[ko is not a solution]))
(;B[er];W[cs]
(;B[bn];W[ar])
(;B[ds];W[cr]
(;B[ar];W[ap])
(;B[bn];W[ar]))
(;B[ar];W[ap])
(;B[dr];W[cr]))
(;B[bs];W[cs]))