(;GM[1]FF[4]AP[Drago:4.22.03]SZ[19]CA[UTF-8]AW[qr][rr][rq][qp][pp][op][np][mp][mq][mr][ms][ns]AB[nq][nr][oq][pq][qq][pr][os][rp][sp][qo][rn]C[Black to play and live.]
(;B[sr]C[Black can try this 2-1 point.];W[sq]
(;B[qs]
;W[ss]C[This is seki.])
(;B[rs]
;W[ss]C[This is ko.]))
(;B[rs]C[However this 2-1 point works.]
(;W[qs]C[This White's strongest play.];B[sr]
;W[ss]C[This is White's only play that is not self-atari.];B[sq]C[White can never capture the seven stones as White cannot win this ko.])
(;W[ss]C[This fails.];B[sr])
(;W[sr]C[This also fails.];B[qs])))
