(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
AW[ap][bp][aq][bq][cr][dr][er][fr][gr][hr]AB[ao][bo][co][do][eo][cq][dq][eq][fq][gq][hq][jq][ir][kr][as][bs][cs][hs]KK[^Bestiary^Ishinoshita]
(;B[fs]C[The key, nothing else works]
(;W[gs]
;B[br]
;W[is]
;B[cp]
;W[ds]
;B[ar]
;W[bq]C[White arrives in time for the under-the-stones play...]
;B[aq]
;W[ap]C[this extra stone puts white in damezumari]
;B[br]
(;W[ar]
;B[bs]
;W[cs]
;B[bp]
;W[as]
;B[br]C[same eye-reduction as in problem 5]
;W[bs]
;B[aq]C[ko (white must find the first threat)])
(;W[bs]
;B[ar]C[atari from this direction is no longer possible]))
(;W[br]
;B[gs]
;W[es]
;B[is]C[White is dead (bent four)])
(;W[es]C[wrong side to block]
;B[br]
;W[gs]
;B[cp]C[this way, white dies without ko]))
(;B[br]C[premature cut]
;W[ds]
(;B[gs]
;W[ar]
;B[bs]
;W[fs]
;B[br]
;W[is]
;B[cp]
;W[cs]
;B[as]
;W[bq]C[white would live even without h1])
(;B[fs]
;W[ar]
;B[bs]
;W[gs]
;B[br]
;W[is]
;B[cp]
;W[cs]
;B[as]
;W[bq]C[that ishinoshita has no counter]))
(;B[gs]C[this is not enough, as the capture of those two stones threatens an eye]
;W[fs]
;B[br]
;W[is]
;B[cp]
;W[ds]
;B[ar]
;W[hs]C[white lives even without the ishinoshita]))
