(;GM[1]FF[4]AP[Drago:4.22.03]SZ[19]CA[UTF-8]AW[rr][or][nr][mr][oq][pp][qp][qq][ro][rn]AB[qr][pr][pq][lr][lq][mq][nq][op][oo][po][qo]C[Black to play and rescue three stones.]
(;B[os]C[Claerly if Black just fills liberties then White is one liberty ahead.];W[qs])
(;B[rq]C[So using the corner threat is the way to go.];W[rp];B[rs];W[sq]
;B[os]C[Now Black seems to have an advantage.];W[ps]C[This move is dangerous for Black.];B[qs];W[ss]
;B[sr]C[It is a Ko with White to find the first Ko threat.]))
