(;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[ln][mn][nn][on][pn][lo][qo][mp][pp][qp][lq][mq][oq][pq][or]AB[lm][mm][nm][om][pm][kn][qn][ko][mo][po][ro][kp][lp][rp][kq][rq][lr][mr][pr][qr]
(;B[np]C[This is the correct first move]
(;W[no]C[If white escapes the atari by taking...]
;B[nq]C[... then this move leaves white short of liberties]
(;W[mo]
;B[oo])
(;W[op]
;B[mo]C[This is only one eye.]))
(;W[nq]C[So white can try connecting.]
;B[oo]C[But then this move sets up a snap-back.]
;W[no]
;B[mo]))
(;B[oo]C[This way fails.]
;W[no]
(;B[np]
;W[op])
(;B[nq]
;W[nr]))
(;B[no]C[As does this]
;W[oo]
;B[nq]
;W[np])
(;B[nq]C[And this.]
;W[np]
;B[oo]
;W[no]))
