(;GM[1]FF[4]SZ[19]CA[utf-8]AP[SmartGo One:1.6.7]GN[205ex]AB[qn][mo][mp][mq][mr][no][oo][po][qp][rp][sp][oq][or][pr][ps][ns]AW[np][nq][nr][op][pp][pq][qq][rq][sq][qr][rr]C[Black to play.]
(;B[ms]C[Connecting here allows White to live.];W[qs];B[os];W[ss])
(;B[rs]C[This is also wrong as it gives White a ko to live.];W[ss];B[sr])
(;B[sr]C[This is the correct play. White runs out of liberties.]
(;W[ss]
;B[qs]C[Black has no danger so White is dead.])
(;W[rs]C[Black has no danger so White is dead.]))
(;B[os]C[Connecting here allows White to live.];W[qs];B[ms];W[ss])
(;B[qs]C[This is also wrong.];W[rs]))
