(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PB[Black to play and kill]AW[lq][mq][nq][oq][lr][pr][qr][os]AB[lp][mp][np][op][kq][pq][qq][rq][ir][kr][rr]
(;B[qs]
;W[nr]
;B[ms]
;W[ls]C[Two eyes])
(;B[ns]
;W[nr]
;B[ms]
;W[ls]C[Two eyes])
(;B[nr]
;W[qs]
;B[ls]
;W[or]
;B[ms]
;W[ns]
;B[ks]
;W[mr]C[Two eyes
])
(;B[ls]C[The hane is the correct first move]
(;W[ms]
;B[nr]C[This is now the vital point]
;W[qs]C[If white tries an eye here....]
;B[or]C[... black plays atari]
;W[ks]
;B[rs]C[White is stuck.])
(;W[ns]C[If white here...]
;B[qs]C[...black stops this eye.]
;W[nr]
;B[ms]C[Dead])))
