(;AB[bp]AB[bn]AB[ao]AB[co]AB[do]AB[eo]AB[fp]AB[fq]AB[fr]AB[fs]AB[cr]AW[br]AW[cp]AW[dp]AW[ep]AW[eq]AW[er]AW[es]AW[ds]AW[cs]C[Black to kill]AP[goproblems]
(;B[cq];W[bq]
(;B[bs]
(;W[aq]
(;B[as];W[ar]
(;B[bs];W[as];B[ap]C[CHOICERIGHT])
(;B[ap];W[bs]))
(;B[ap];W[as]))
(;W[as];B[aq];W[dr];B[ap];W[dq];B[ar]C[RIGHT])
(;W[ar];B[ap];W[as];B[aq]C[RIGHT]))
(;B[aq];W[ar]
(;B[bs];W[ap]C[ko])
(;B[ap];W[bs])
(;B[as];W[bs]))
(;B[ar];W[aq])
(;B[as];W[bs])
(;B[ap];W[bs]))
(;B[bq];W[cq]
(;B[dr];W[ar])
(;B[bs];W[as]
(;B[aq];W[dr])
(;B[dr];W[ar]))
(;B[ar];W[dr];B[bs]C[];W[as]C[ko]))
(;B[ar];W[cq]
(;B[dr];W[aq]
(;B[bq];W[as];B[ap];W[dq]C[ko])
(;B[as];W[bq]))
(;B[bq];W[dr];B[bs];W[as]C[ko])
(;B[aq];W[dr])
(;B[as];W[dr])
(;B[bs];W[bq];B[dr];W[aq]))
(;B[bs];W[cq]C[thanks to LHHB]
(;B[bq];W[ar])
(;B[ar];W[bq]))
(;B[aq];W[ar])
(;B[dr];W[bq])
(;B[as];W[bq]))