The Magic of Kifu

(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2] RU[Japanese]SZ[19]KM[6.50] PW[Yamashita Keigo]PB[Shibano Toramaru]WR[9p]BR[9p]DT[2021-02-18]EV[46th Japanese Meijin, league]SO[Go4Go.net]RE[W+Resign] ;B[pd] ;W[dp] ;B[pp] ;W[dc] ;B[cn] ;W[fq] ;B[de] ;W[ce] ;B[cf] ;W[cd] ;B[df] ;W[fc] ;B[ep] ;W[eo] ;B[cp] ;W[co] ;B[bo] ;W[do] ;B[cq] ;W[bp] ;B[bq] ;W[bn] ;B[ap] ;W[cm] ;B[dn] ;W[em] ;B[bm] ;W[en] ;B[an] ;W[nq] ;B[jp] ;W[pn] ;B[on] ;W[oo] ;B[po] ;W[no] ;B[oq] ;W[qn] ;B[nr] ;W[om] ;B[fp] ;W[eq] ;B[gp] ;W[dq] ;B[nn] ;W[mo] ;B[nm] ;W[mr] ;B[mq] ;W[lq] ;B[np] ;W[mp] ;B[nq] ;W[kp] ;B[jo] ;W[lm] ;B[ol] ;W[rp] ;B[ro] ;W[qo] ;B[rq] ;W[jm] ;B[pm] ;W[hm] ;B[kr] ;W[lr] ;B[jq]C[Here W wants to kill the lower group, but the problem is that White is not so solid outside -] (;W[pq]C[Brilliant tesuji! Katago also thinks that this is the best move now.] ;B[qp] ;W[op] ;B[qq]LB[kn:A][pr:B]C[now the cutting point at A is protected, because White can extend at B and kill 5 stones] ;W[hq] ;B[pr] ;W[kn]C[Black's big group is dead and White is leading] ;B[qf] ;W[nc] ;B[il] ;W[im] ;B[oc] ;W[nd] ;B[of] ;W[rf] ;B[re] ;W[qg] ;B[pf] ;W[qk] ;B[qi] ;W[pi] ;B[qh] ;W[ph] ;B[rg] ;W[pj] ;B[qm] ;W[kd] ;B[ke] ;W[jd] ;B[ll] ;W[mi] ;B[je] ;W[ie] ;B[if] ;W[ki] ;B[ed] ;W[ec] ;B[ii] ;W[kg] ;B[lh] ;W[li] ;B[id] ;W[he] ;B[ld] ;W[lc] ;B[me] ;W[hd] ;B[kk] ;W[jh] ;B[le] ;W[kb] ;B[hg] ;W[mk] ;B[ml] ;W[mf] ;B[lg] ;W[lf] ;B[nf] ;W[pg] ;B[nh] ;W[rh] ;B[sf] ;W[ri] ;B[rl] ;W[ni] ;B[oj] ;W[ok] ;B[nk] ;W[nj] ;B[pk] ;W[ih] ;B[hh] ;W[ij] ;B[hj] ;W[ji] ;B[jl] ;W[hi] ;B[gi] ;W[oi] ;B[kf] ;W[ok] ;B[hp] ;W[gq] ;B[oj] ;W[rk] ;B[dl] ;W[fl] ;B[bf] ;W[ek]) (;W[hq] ;B[kn] ;W[km] ;B[ln] ;W[mn] ;B[mm]C[W cannot win this semeai]))