(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2] RU[Chinese]SZ[19]KM[0.00]TM[300]OT[3x30 byo-yomi] PW[loganmhb]PB[V250017085]WR[7k]BR[9k]DT[2020-10-24]RE[B+Resign]RL[0]RN[3]TC[3]TT[30] ;B[dp] ;W[dd] ;B[pp] ;W[pd] ;B[jp] ;W[qn] ;B[qo] ;W[pn] ;B[ql] ;W[op] ;B[oq] ;W[np] ;B[nq] ;W[po] ;B[qp] ;W[rn] ;B[qi] ;W[cn] ;B[co] ;W[dn] ;B[mp] ;W[nn] ;B[pf] ;W[nd] ;B[gp] ;W[dr] ;B[cq] ;W[eq] ;B[fq] ;W[ep] ;B[eo] ;W[do] ;B[fo] ;W[bo] ;B[cp] ;W[cr] ;B[bp] ;W[bn] ;B[br] ;W[bs] ;B[ar] ;W[ap] ;B[cs] ;W[ds] ;B[fp] ;W[dq] ;B[bq] ;W[ao] ;B[es] ;W[aq] ;B[er] ;W[as] ;B[mn] ;W[nm] ;B[fr] ;W[fc] ;B[dh] ;W[cf] ;B[dk] ;W[fm] ;B[gm] ;W[fl] ;B[gl] ;W[fk] ;B[ej] ;W[bj] ;B[mm] ;W[ml] ;B[ll] ;W[mk] ;B[lk] ;W[pk] ;B[qk] ;W[pj] ;B[qj] ;W[mj] ;B[lj] ;W[gk] ;B[hk] ;W[hj] ;B[ik] ;W[hi] ;B[cg] ;W[bg] ;B[bh] ;W[bf] ;B[df] ;W[de] ;B[ef] ;W[ci] ;B[ch] ;W[bl] ;B[di] ;W[fh] ;B[eh] ;W[fg] ;B[eg] ;W[ge] ;B[cj] ;W[bi] ;B[bk] ;W[ah] ;B[aj] ;W[qd] ;B[qe] ;W[re] ;B[rf] ;W[nf] ;B[rd] ;W[rc] ;B[se] ;W[li] ;B[ki] ;W[kh] ;B[ji] ;W[jh] ;B[ii] ;W[ih] ;B[ij] ;W[oh] ;B[ph] ;W[oi] ;B[jd] ;W[ld]C[This is probably not a fatal error, but it should be on the third line in order to prevent Black from making a base.] ;B[gc] (;W[hd]C[This move looks very strange to me in retrospect. It aims at cutting the black stones apart, I guess, but seems like it creates more problems than it solves. My next few moves all were aiming at the wrong thing (containing or cutting rather than preventing the formation of a base). Black has nowhere to run so that's the only concern.] ;B[hc] ;W[id] ;B[ic] ;W[jc] ;B[kc] ;W[jb] ;B[kd]C[This move looks natural to me but KataGo thinks it is also a serious error, and L18 is correct. I guess this allows the white stones to potentially gain enough liberties to win the capturing race by pushing?] ;W[kb] ;B[lc] (;W[mc]C[Completely wrong direction, those stones at the bottom need help urgently!] ;B[fb] ;W[ec] ;B[eb] ;W[db] ;B[lb] ;W[ib] ;B[hb] ;W[ha] ;B[ga] ;W[ja]C[At least I was able to make a ko and get an extra move on the bottom out of it (though I don't think I should have lived in that invasion anyway).] ;B[ia] (;W[jq]C[KataGo points out that this would be much better at Q3.] ;B[ka] ;W[lq] (;B[kp] ;W[kq] ;B[iq] ;W[ir] ;B[hq] ;W[lp] ;B[lo] ;W[mq] ;B[mo] ;W[nr] ;B[or] ;W[ms] ;B[hr] ;W[js] ;B[os] ;W[kr] ;B[ns] ;W[mr] ;B[hs] ;W[is] ;B[ro] ;W[mb] ;B[le] ;W[gd] ;B[ie] ;W[hf] ;B[if] ;W[hg] ;B[md] ;W[oc] ;B[og] ;W[ng] ;B[rm] ;W[mh] ;B[sn] ;W[ag] ;B[ai] ;W[da] ;B[ea] ;W[pl] ;B[fi] ;W[gi] ;B[cl] ;W[bm] ;B[fj] ;W[en] ;B[fn] ;W[dl] ;B[em] ;W[el] ;B[ek] ;W[dm] ;B[lg]) (;B[mq]C[If B protects the cut here I think there's no way the invasion should live.])) (;W[pq] ;B[ka] ;W[pr])) (;W[lb] ;B[mc] ;W[gb])) (;W[fb]C[KataGo's preferred move. Simple and easy to understand, I think -- descend to contain and make it harder to make a base.]))