(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PW[White]PB[Black]AW[lq][nq][oq][pq][qq][lr][qr][qs]AB[lo][no][lp][np][pp][qp][kq][rq][ir][kr][rr]C[Black to kill.]
(;B[mq]CR[mq]
;W[mr]CR[mr]
;B[ls]CR[ls]
(;W[ms]CR[ms]
(;B[ns]CR[ns]
(;W[mp]CR[mp]
;B[or]LB[mp:6][mq:1][mr:2][or:7][ls:3][ms:4][ns:5]C[white has dead shape.])
(;W[nr]CR[nr]C[variation.]
;B[os]CR[os]C[still dead.]))
(;B[nr]CR[nr]C[not good.]
;W[mp]CR[mp]
(;B[ns]CR[ns]
;W[mq]CR[mq]
;B[or]CR[or]
;W[os]CR[os]C[white is alive.])
(;B[or]CR[or]C[still not good.]
;W[os]CR[os]LB[pr:A]C[black can only make gote-seki at A.]))
(;B[os]CR[os]C[not good.]
;W[or]CR[or]
;B[ps]CR[ps]
;W[mp]CR[mp]LB[ns:A]C[still only gote-seki at A.]))
(;W[os]CR[os]C[variation.]
;B[ms]CR[ms]
;W[mp]CR[mp]
;B[pr]CR[pr]C[only one eye.]))
(;B[mr]CR[mr]C[not good.]
;W[mq]CR[mq]
;B[ls]CR[ls]
;W[ms]CR[ms]
;B[ns]CR[ns]
;W[os]CR[os]C[white is alive.]))