(;GM[1]FF[4]AP[Drago:4.22.03]SZ[19]CA[UTF-8]AB[rr][rq][pr][qp][ro][po][pn][nn][mo][lo][ko][kp][kq][jr][ir]AW[qr][qq][pp][op][np][mp][lp][oq][lq][kr]C[Black to play and kill.]
(;B[lr]C[Capturing this stone does not work.];W[mr];B[ks];W[or];B[qs];W[pq];B[ps];W[os];B[rs];W[ms])
(;B[mr]C[Peeping at it also does not work.];W[lr];B[qs];W[nr];B[mq];W[ms];B[ks];W[os])
(;B[qs]C[Attacking from this side is correct.]
(;W[mr];B[ns];W[ls];B[js];W[nr]
;B[os]C[White only has one eye.])
(;W[or];B[mr];W[lr];B[nr];W[os]
;B[ks]C[White fails to make two eyes this way too.]
(;W[pq];B[ls])
(;W[ls];B[pq]))))
