(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[19]KM[0.00]TM[]
PW[Igo for windows]PB[Human]
AW[dl][am][an][ao][bo][bp][dp][bq][cq][dr][fr][cs][ds][es][fs][gs]
AB[al][cl][bm][cm][dm][gm][bn][cn][dn][co][eo][cp][dq][eq][fq][hq][er][gr][hs]C[Black to kill.]
(;B[ar]CR[ar]
(;W[aq]CR[aq]C[CHOICE]
;B[bs]CR[bs]
;W[cr]CR[cr]C[It's the famous two stone seki!])
(;W[br]CR[br]C[CHOICE]
;B[aq]CR[aq]
;W[bs]CR[bs]C[WRONG White puts a stop to your evil plans!]))
(;B[bs]CR[bs]
;W[cr]CR[cr]
;B[ar]CR[ar]
;W[br]CR[br]
;B[aq]CR[aq]
;W[as]CR[as]C[WRONG Ko in white's favor. White stands to lose a lot, so a suitable threat is unlikely])
(;B[br]CR[br]
(;W[ar]CR[ar]C[CHOICE]
(;B[bs]CR[bs]
;W[cr]CR[cr]
;B[aq]CR[aq]
;W[as]CR[as]C[The pain of loss.])
(;B[aq]CR[aq]
(;W[bs]CR[bs]C[CHOICE]
;B[as]CR[as]C[RIGHT Ko in favor of black. Given the size of the prize, it's unlikely that white has a viable threat.])
(;W[ap]CR[ap]C[CHOICE]
;B[bs]CR[bs]
;W[cr]CR[cr]
;B[aq]CR[aq]C[RIGHT White = 0wz0rd])))
(;W[cr]CR[cr]
;B[aq]CR[aq]
(;W[bs]CR[bs]
;B[ar]CR[ar]C[Dead as a proverbial doornail.])
(;W[ar]CR[ar]
;B[as]CR[as]C[Butt-whooped.])
(;W[as]CR[as]
;B[ar]CR[ar]C[Would be seki, but b1 works for black.]))
(;W[aq]CR[aq]
;B[cr]CR[cr]C[Divided and conquered.])
(;W[bs]CR[bs]C[CHOICE]
(;B[ar]CR[ar]
;W[aq]CR[aq]C[Whoopsie.])
(;B[aq]CR[aq]
;W[ar]CR[ar]
;B[as]CR[as]C[RIGHT Ko in favor of black. Given the size of the prize, it's unlikely that white has a viable threat.]))))