(;GM[1]FF[4]AP[Drago:4.22.03]SZ[19]CA[UTF-8]AB[lp][lq][lr][ko][ln][mo][nn][mm][np][op][oo][po][hr][gq][eq][fo]AW[qr][pq][pp][qo][qn][om][nl][ml][ll][km][kn][jo][in][kp][kq][kr]
[iq][ir][mp][mq][mr]C[Black to play and live.];B[lo]C[Connecting here threatens two eyes.];W[on]
(;B[ns]C[This is the tesuji to make use of White's weakness.]
(;W[ms]C[White cannot block.];B[ls];W[nr];B[or])
(;W[nr]C[Nor can White connect to the right.];B[or])
(;W[ls]C[This looks best for White.];B[ms];W[nr]
;B[ks]C[However after this Black can either capture or escape to the left.]
(;W[or];B[is])
(;W[os];B[ls];W[or];B[is])
(;W[js];B[or])))
(;B[ms]C[This play fails.];W[ns]))
