(;AB[cr]AB[cq]AB[cp]AB[bp]AB[dq]AB[ds]AB[do]AB[eo]AB[fo]AB[fq]AB[gq]AB[hq]AB[iq]AB[ir]AB[cn]AB[cm]AB[ck]AW[co]AW[bo]AW[bn]AW[aq]AW[br]AW[dp]AW[ep]AW[eq]AW[er]AW[dr]AW[fr]AW[gr]AW[hr]C[Black to kill]AP[goproblems]
(;B[ap];W[es]
(;B[ar]
(;W[as]
(;B[cs];W[bs];B[bm]C[CHOICERIGHT])
(;B[bm];W[cs]))
(;W[cs];B[bq];W[bs];B[bm]C[]))
(;B[cs];W[bs]
(;B[bm];W[bq])
(;B[ar];W[ao]))
(;B[bs];W[cs]
(;B[bm];W[as])
(;B[as];W[ao]C[ko]))
(;B[bq];W[as]
(;B[ar]C[ko])
(;B[cs];W[ao]C[ko])
(;B[bm];W[cs]C[ko])))
(;B[ar];W[ap];B[bs];W[as]C[ko])
(;B[bs];W[ap]
(;B[ar];W[as]C[ko])
(;B[ao];W[as]C[ko]))
(;B[cs];W[ap]
(;B[bm];W[bs];B[ao];W[an];B[am];W[ao];B[ar];W[as])
(;B[bs];W[es]
(;B[ar]C[];W[as]C[ko])
(;B[ao];W[an]
(;B[bm];W[bq])
(;B[ar];W[as]))
(;B[bm];W[bq])
(;B[hs];W[bq]))
(;B[ao];W[bs])
(;B[ar];W[bs]))
(;B[bm];W[ap]
(;B[ao];W[an];B[am];W[ao]
(;B[bs];W[es]
(;B[ar];W[as]C[ko])
(;B[hs];W[cs]C[ko])
(;B[cs];W[as]C[ko]))
(;B[ar];W[as]
(;B[cs];W[es])
(;B[bs];W[cs]))
(;B[hs];W[bq]))
(;B[an];W[ao]))
(;B[ao];W[ap];B[bm];W[an];B[am];W[ao];B[bs];W[es]
(;B[ar];W[as]C[ko])
(;B[cs];W[as]C[ko]))
(;B[hs];W[ap])
(;B[es];W[ap]
(;B[cs];W[bs])
(;B[bs];W[bq])))