(;AW[bo]AW[co]AW[do]AW[eo]AW[fo]AW[go]AW[bp]AW[gp]AW[bq]AW[gq]AW[gr]AW[gs]AB[dq]AB[ar]AB[br]AB[fr]AB[ds]C[White to play and kill]PL[W]
(;W[bs];B[cq]
(;W[cs];B[cr]
(;W[er]C[RIGHT])
(;W[fs];B[er];W[es];B[eq]C[Only ko, black can kill without ko.])
(;W[es];B[er]
(;W[fs];B[eq]C[Only ko, white can kill without ko])
(;W[dr];B[fs]))
(;W[eq];B[er]))
(;W[fs];B[es];W[cs];B[fq]
(;W[cr];B[dr];W[eq];B[ep]
(;W[dp];B[er];W[fp]C[RIGHT])
(;W[fp];B[er];W[dp]C[RIGHT]))
(;W[eq];B[ep]
(;W[cr];B[dr];W[dp];B[er];W[fp]C[RIGHT])
(;W[dp];B[cr]
(;W[er];B[dr];W[eq];B[er];W[fp]C[RIGHT])
(;W[fp]C[RIGHT]))
(;W[fp];B[er];W[cr]C[RIGHT])))
(;W[er];B[dr];W[cs];B[fq]
(;W[fs];B[es])
(;W[es];B[fs])
(;W[eq];B[ep])))
(;W[dp];B[eq]
(;W[cq];B[cr])
(;W[cr];B[cq]
(;W[cs];B[bs])
(;W[dr];B[cs]))
(;W[fs];B[cr]
(;W[es];B[bs];W[er];B[dr])
(;W[bs];B[es])))
(;W[cq];B[cr]
(;W[eq];B[er]
(;W[fs];B[bs])
(;W[bs];B[fs]))
(;W[fs];B[bs])
(;W[bs];B[fs])
(;W[er];B[bs]
(;W[dr];B[eq])
(;W[fs];B[dr])
(;W[es];B[dr])
(;W[eq];B[dr])
(;W[fq];B[dr])))
(;W[eq];B[er]
(;W[cq];B[cr]
(;W[fs];B[bs])
(;W[bs];B[fs]))
(;W[cr];B[cq]
(;W[cs];B[bs])
(;W[fs];B[cs])))
(;W[fq];B[er]
(;W[cq];B[cr])
(;W[cr];B[cq]
(;W[cs];B[bs])
(;W[fs];B[cs])))
(;W[cr];B[cq]
(;W[cs];B[bs])
(;W[dr];B[er])
(;W[er];B[dr])
(;W[bs];B[cs]))
(;W[dr];B[er]
(;W[cq];B[cr])
(;W[cr];B[cq])
(;W[fs];B[cr]
(;W[es];B[bs])
(;W[bs];B[cq])))
(;W[er];B[dr]
(;W[cq];B[cr];W[bs];B[fq]
(;W[es];B[fs])
(;W[eq];B[ep])
(;W[fs];B[es]))
(;W[bs];B[cq];W[cs];B[fq]
(;W[fs];B[es])
(;W[es];B[fs])
(;W[eq];B[ep]))
(;W[eq];B[cq])
(;W[fq];B[cq]))
(;W[cs];B[cr])
(;W[es];B[dr]
(;W[cq];B[cr]
(;W[bs];B[fs])
(;W[fs];B[bs]))
(;W[bs];B[fs];W[cr];B[cq])
(;W[er];B[cq]))
(;W[fs];B[bs]))
Daniel