(;SZ[19]AW[np]AW[op]AW[pp]AW[nq]AW[pq]AW[mr]AW[nr]AW[qr]AW[ms]AW[qs]AB[mo]AB[no]AB[oo]AB[po]AB[qo]AB[mp]AB[qp]AB[kq]AB[mq]AB[oq]AB[rq]AB[lr]AB[rr]AB[ls]AB[os]AB[rs]C[Black to play and kill]GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]RU[Japanese]KM[6.50]
(;B[pr]
(;W[qq]C[CHOICE];B[or]C[RIGHT])
(;W[or]C[CHOICE];B[qq];W[ps];B[pr]C[RIGHT]))
(;B[qq];W[pr];B[or]C[Seki])
(;B[or];W[pr]C[Seki]))