(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[19]KM[0.00]TM[]
PW[White]PB[Black]AW[bl][bn][cn][dn][do][dp][bq][dq][br][dr][fr][bs]AB[bo][co][ap][cp][cq][ar][cr][cs]C[white to kill]PL[W]
(;W[an]CR[an]
(;B[ao]CR[ao]
(;W[aq]CR[aq]C[RIGHT CHOICE])
(;W[ds]CR[ds]
;B[aq]CR[aq]C[seki])
(;W[as]CR[as]
;B[aq]CR[aq])
(;W[bp]CR[bp]
;B[aq]CR[aq]))
(;B[aq]CR[aq]
(;W[ao]CR[ao]C[RIGHT CHOICE])
(;W[bp]CR[bp]
;B[as]CR[as])
(;W[ds]CR[ds]
;B[ao]CR[ao]C[seki])))
(;W[ds]CR[ds]
;B[aq]CR[aq]
;W[an]CR[an]
;B[ao]CR[ao]C[seki])
(;W[aq]CR[aq]
;B[bp]CR[bp]
(;W[as]CR[as]
;B[ar]CR[ar])
(;W[ds]CR[ds]
;B[as]CR[as]))
(;W[as]CR[as]
;B[bp]CR[bp]
(;W[aq]CR[aq]
;B[ar]CR[ar])
(;W[ds]CR[ds]
;B[aq]CR[aq]))
(;W[bp]CR[bp]
;B[aq]CR[aq])
(;W[ao]CR[ao]
;B[an]CR[an]
;W[am]CR[am]
;B[aq]CR[aq]C[ko]))