(;SZ[19]AW[bn]AW[cn]AW[en]AW[fo]AW[cq]AW[dq]AW[fq]AW[gq]AW[cr]AW[er]AB[ap]AB[cp]AB[dp]AB[ep]AB[bq]AB[eq]AB[br]AB[fr]C[White to play and kill the black stones]GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]RU[Japanese]KM[0.00]PL[W]
(;W[dr]
(;B[bo]
(;W[co];B[bs];W[ar];B[cs]
(;W[gr]C[RIGHT])
(;W[fs]C[RIGHT]))
(;W[bs];B[co]
(;W[ar];B[cs]
(;W[ds];B[aq]
(;W[gr];B[as]C[ko])
(;W[cs];B[as]C[ko])
(;W[as];B[cs];W[bs];B[as]C[ko]))
(;W[gr];B[as]C[ko]))
(;W[an];B[ao];W[ar];B[cs]
(;W[ds];B[aq]
(;W[gr];B[as]C[ko])
(;W[cs];B[as]C[ko])
(;W[as];B[cs];W[bs];B[as]C[ko]))
(;W[gr];B[as]C[ko]))
(;W[cs];B[ar]))
(;W[ar];B[cs]
(;W[gr];B[co];W[bs];B[as]C[ko])
(;W[bs];B[as]C[ko]))
(;W[an];B[bs]
(;W[ar];B[co];W[ao]C[RIGHT])
(;W[ao];B[ar])
(;W[co];B[ar])))
(;B[cs]
(;W[gr];B[bo];W[co];B[bs];W[ar]C[RIGHT])
(;W[fs];B[bo];W[co];B[bs];W[ar]C[RIGHT])))
(;W[ds];B[bs]
(;W[ar];B[cs])
(;W[cs];B[ar]))
(;W[gr];B[bs]
(;W[ar];B[dr];W[ds];B[cs])
(;W[fs];B[ar])
(;W[bo];B[dr];W[ds];B[cs]))
(;W[bs];B[ds]
(;W[gr];B[dr])
(;W[cs];B[es])
(;W[dr];B[es])
(;W[es];B[fs]))
(;W[bo];B[cs];W[dr];B[es])
(;W[fs];B[bs];W[ar];B[dr];W[ds];B[cs]))