(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PB[Black to play and live]AW[pl][ql][rl][om][pn][qn][no][oo][mq][pq][rq][sq][mr][qr][rr][qs][ss]AB[rm][sm][rn][po][qo][ro][so][qq][nr][or][pr][ns][ps]C[Black has an eye in each half so you just have to link them up.]
(;B[qp]
;W[op]C[This obviously fails.])
(;B[oq]C[This fails too.]
;W[pp]
;B[op]
;W[qp])
(;B[pp]C[This also fails.]
;W[oq]
;B[op]
;W[nq])
(;B[op]C[This is the correct play.]
(;W[qp]C[Capturing here is White's best reply.]
;B[pp]
(;W[oq]
;B[nq]
;W[qq]
;B[np])
(;W[np]C[This seals Black in.]
;B[oq]))
(;W[pp]
;B[qp])
(;W[np]
;B[qp]
;W[oq]
;B[nq]C[Snap-back shape.])))
