(;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[ro][np][op][qp][nq][nr][pr][rr][ps]AB[oq][pq][or][qr][os]
(;B[rq]C[This is the only place to start, but looks wrong
as white can play atari on the next turn.]
;W[qq]
(;B[rs]C[This is the clever move as it traps the 2-2 stone 
and if white captures one stone black can play
straight back and capture three (snapback).]
(;W[qs]
;B[qr]C[The snapback.])
(;W[sr]
;B[sq]C[White cannot stop a second eye.]
;W[sp]
;B[ss]
;W[rr]
;B[sr]))
(;B[qs]C[Black cannot take as white stops the corner eye.]
;W[sq])
(;B[sr]C[This clearly fails.]
;W[qs]))
(;B[qs]
;W[rq]C[This is just one eye.])
(;B[rs]
;W[rq]C[And so is this.])
(;B[qq]
;W[rq]C[And this.]))
