(;AW[an]AW[ao]AW[bo]AW[cp]AW[bq]AW[br]AW[dr]AB[bl]AB[am]AB[bn]AB[cn]AB[co]AB[eo]AB[dq]AB[eq]AB[er]C[Black to play.]
(;B[ds]
(;W[cr]
(;B[cs];W[bs]
(;B[ar];W[aq];B[bp];W[ap];B[cq]C[RIGHT])
(;B[bp];W[ap]
(;B[cq];W[ar]C[White lives.])
(;B[ar];W[cq]C[White lives.]))
(;B[aq];W[ar])
(;B[ap];W[bp]))
(;B[aq];W[ar]C[White lives])
(;B[ar];W[cs]
(;B[bp];W[ap];B[cq];W[as]C[ko])
(;B[aq];W[as]C[ko at best])
(;B[as];W[cq];B[aq];W[bs])
(;B[cq];W[as];B[bs];W[aq]))
(;B[bp];W[ap]
(;B[cq];W[ar]C[White lives.])
(;B[cs];W[cq]C[White lives.])))
(;W[bs];B[ar];W[aq];B[bp];W[ap];B[cq]C[RIGHT])
(;W[cs];B[cr];W[bs];B[ar]
(;W[aq];B[bp];W[ap];B[cq]C[RIGHT])
(;W[cq];B[aq]C[RIGHT])))
(;B[bp];W[cq]
(;B[ap];W[cs])
(;B[aq];W[ar];B[ap];W[cs])
(;B[ds];W[ap]))
(;B[cq];W[bp]C[White is alive.])
(;B[ar];W[cq]
(;B[ds];W[cs]C[Ko is not enough.])
(;B[aq];W[bp];B[ds];W[cs]C[ko]))
(;B[cr];W[cq]
(;B[ds];W[bs])
(;B[ap];W[bp]
(;B[ds];W[bs])
(;B[aq];W[cs])
(;B[cs];W[bs]))
(;B[cs];W[bs];B[ds];W[ap])
(;B[aq];W[ar]))
(;B[aq];W[ar]C[White lives.])
(;B[bs];W[cr]
(;B[cq];W[ar]C[White lives.])
(;B[ar];W[aq]
(;B[bp];W[ap];B[cq];W[cs])
(;B[as];W[cq]))
(;B[ds];W[cs])
(;B[aq];W[ar])
(;B[ap];W[bp])
(;B[bp];W[ap]
(;B[cq];W[ar])
(;B[ar];W[cq])))
(;B[ap];W[bp]C[White lives.])
(;B[cs];W[bs]C[]
(;B[bp];W[ds]C[White lives.])
(;B[cq];W[bp]C[White is alive.]))
(;B[dp];W[cr]C[White lives easily.]))