(;AB[rp]AB[sp]AB[qo]AB[po]AB[on]AB[nn]AB[mn]AB[ln]AB[lo]AB[lp]AW[so]AW[ro]AW[qn]AW[pn]AW[nm]AW[lm]AW[mm]AW[no]AW[rn]AB[mq]AB[mr]AB[nr]AB[ns]AW[kn]AW[ko]AW[kp]AW[lq]AW[lr]AW[ls]AW[ms]AW[kq]AB[om]AB[pm]AW[ol]AW[pl]AW[ql]AW[qm]AB[pq]AW[oo]TR[oo]C[Black to play effectively against the white cut]AP[goproblems](;B[mp];W[qp](;B[pp];W[qq](;B[rq];W[qr](;B[pr];W[rr])(;B[rr];W[pr](;B[or];W[oq])(;B[qs];W[oq])(;B[oq];W[rs]C[](;B[qs];W[sr];B[ss];W[ps](;B[sq];W[rs]C[ko])(;B[or];W[rs]))(;B[sr]C[Had the opportunity arisen white's moves would have been used as ko threats.RIGHT])(;B[or];W[sr]))(;B[op];W[rs](;B[qs];W[sr];B[ss]C[ko])(;B[sr];W[oq];B[np];W[or](;B[os];W[qs](;B[nq]C[Gote seki])(;B[ps]C[Gote seki]))(;B[nq];W[os])(;B[ps];W[os])(;B[qs];W[ps]C[Seki]))(;B[or];W[sr]))(;B[np];W[rs](;B[sr];W[oq];B[op];W[or](;B[qs];W[ps]C[Seki])(;B[ps];W[os])(;B[os];W[qs](;B[ps]C[Gote seki])(;B[nq]C[Gote seki]))(;B[nq];W[os]))(;B[qs];W[sr];B[ss];W[ps](;B[or];W[rs])(;B[sq];W[rs]C[ko]))(;B[or];W[sr]))(;B[nq];W[oq]))(;B[qs];W[rr]))(;B[sr];W[rr](;B[qr];W[rq])(;B[sq];W[rq])(;B[rs];W[sq];B[rq];W[sq]))(;B[qr];W[rq]))(;B[qq];W[pp]C[White gets more than expected]))(;B[op];W[mp])(;B[np];W[mp])(;B[pp];W[mp])(;B[qp];W[mp])(;B[oq];W[mp])(;B[qq];W[mp]))