(;AB[ar]AB[aq]AB[bp]AB[co]AB[do]AB[eo]AB[fo]AB[dp]AB[dq]AB[fp]AB[gq]AB[gr]AB[gs]AB[bn]AW[fs]AW[fr]AW[eq]AW[ep]AW[dr]AW[cq]AW[cp]AW[bq]AW[br]AW[bs]C[black to kill.]AP[goproblems]
(;B[cs];W[ds]
(;B[er];W[es]
(;B[fq]C[RIGHT])
(;B[as];W[ap]))
(;B[ap];W[fq])
(;B[fq];W[er])
(;B[as];W[ap]))
(;B[er];W[es]
(;B[cs];W[fq])
(;B[fq];W[cs];B[er];W[eq]))
(;B[ds];W[cs]
(;B[fq];W[er])
(;B[es];W[er])
(;B[er];W[es]))
(;B[es];W[ds];B[fq];W[er])
(;B[cr];W[cs]
(;B[fq];W[er])
(;B[er];W[es])
(;B[es];W[er]))
(;B[fq];W[er]
(;B[cs];W[ds])
(;B[ds];W[cs]))
(;B[ap];W[fq]
(;B[ds];W[cs])
(;B[es];W[er])
(;B[cs];W[ds])
(;B[as];W[ds]))
(;B[as];W[ap]))