(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]RU[NZ]SZ[19]KM[7.00]TM[1800]OT[5x30 byo-yomi]DT[2013-06-30]PC[The KGS Go Server at http://www.gokgs.com/];B[qd];W[dp];B[pq];W[dd];B[oc];W[po];B[qo];W[qn];B[qp];W[pm];B[nq];W[qi];B[qg];W[dj];B[ql];W[rm](;B[rj]C[it means black like territory](;W[ri];B[pj];W[rk];B[qj];W[sj];B[rl];W[sl];B[pi]C[white does not have any eye])(;W[pk]LB[op:A][oq:B];B[pj];W[qj];B[qk](;W[pl];B[ri];W[qh];B[rh];W[oj];B[pi];W[ph];B[oi];W[pg];B[nj])(;W[ok];B[ri];W[qh];B[rh];W[oi];B[pl];W[ol];B[om]))(;W[op];B[oq]C[if black does not answer, white push and cut is huge];W[pk];B[qj];W[pj];B[ri];W[qk]))(;B[qj];W[pj];B[pk];W[rj](;B[rk];W[ok];B[oj];W[pi];B[ol];W[pl];B[nk];W[qk]C[even if white win this ko, black is strong outside])(;B[qk];W[pi];B[ok];W[rk]C[black does not gained anything]))(;B[pj](;W[pi];B[rj];W[qj];B[qk];W[oj];B[pk];W[ok];B[ri]C[white is on trouble (cutting points)])(;W[qj];B[qk];W[rk];B[rl];W[sl];B[rj];W[sk](;B[pi];W[ri];B[qh];W[rh];B[rg];W[ol];B[pk])(;B[ri];W[pi];B[qh];W[oj];B[pk];W[ni]C[black is on trouble]))(;W[rk]C[jump is not interesting];B[qj];W[rj];B[pi])))