(;GM[1]FF[4]AP[Drago:4.22.03]SZ[19]CA[UTF-8]AB[sr][rq][rp][qr][qs][pq][oq][or][os]AW[rr][rs][sp][qq][qp][qo][ro][so][oo][np][nq][nr][ns]C[Black to play and live.]
(;B[ss]C[This fails.];W[rr]
(;B[sq];W[rs])
(;B[rs];W[sq]))
(;B[sq]C[This is the correct move.];W[ss]
;B[rq]C[Black plays back "under the stones" to make the corner eye.];W[sq];B[sr]))
