(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2] RU[AGA]SZ[19]KM[7.50] PW[DH]PB[Chen Weijin]BR[5d]C[2018 0101 I lost by 52.5 points I played some alphago moves, but I don't know whether my opening was any good. After some interesting tenukis and double ladder fighting, he played a skilful invasion where I collapsed, and ran out of main time at move 66. However, he was probably nervous and despite me being on very fast byo-yomi, and him having lots of time, he played fast (presumably to pressure me) and made some huge mistakes and gave me lots of chances, to the point where I thought I might win the game. However I missed an important endgame point and also he then killed my 50 point corner with a sequence that I completely missed (If I had seen it, I could have defended against it in sente) Since we were playing very fast and almost at the end., I wanted to know how much I lost by, so we played to the end.] ;B[cp] ;W[dd] ;B[pq] ;W[pd] ;B[qn] ;W[eq] ;B[dn] ;W[pp]C[all alphago] ;B[qp] ;W[oq] ;B[po] ;W[op] ;B[pr] ;W[qq] ;B[qr] (;W[oo]C[pro (liao xiao), but post game, B thought this was bad. I think I sufficiently agree that won't play this anymore unless I understand the position better] ;B[on] ;W[nn] ;B[om] ;W[nm] ;B[ol] (;W[ip] ;B[qf] ;W[nc] ;B[cf] ;W[fc] ;B[ci] ;W[nl] ;B[oj] ;W[rq] (;B[rr] ;W[ok]C[daring, does it really work?] (;B[pk] ;W[nk] ;B[pi] ;W[dj] ;B[cj] (;W[en]C[overly concerned with my area? when I've already given B so much?] (;B[em] (;W[cq]C[this is a slightly confused move, joseki when E7 is at E5, I'm not sure about it here. It is obviously a shape point, but it is hard to say] (;B[eo] ;W[ce] ;B[bq] ;W[fn]C[natural shape but it does look a bit difficult already in hindsight] ;B[od] ;W[oe] ;B[nd] ;W[oc] ;B[fo] ;W[md]C[B said B lost more with these exchanges and I agreed, but I think the opening was probably good for B after E5, but I don't know. But at the time I felt happy with the game] ;B[gn] (;W[br] ;B[cr] ;W[dq] ;B[bs] ;W[gq] ;B[ne] ;W[pe] ;B[nf]C[I really don't get why this move is valuable, I still disagree with it perhaps he is thinking to defend against the F6 group running (which causes serious problems at B4/A2)] ;W[kd] ;B[og] ;W[bf] ;B[mp]C[good move that left my shape very awkward, perhaps I should tenuki?] (;W[mr]C[agressive, but perhaps too much] ;B[jp]C[at this point it is clear why he is a 5d] (;W[jo]C[I had almost run out of time here while he had lots. ] ;B[iq] (;W[hp] ;B[nr]C[clear sense of the shape point, vital point he shows clearly why he is 5d again] ;W[nq] ;B[mq] ;W[or] ;B[lr] ;W[ns] ;B[kp] ;W[mo]C[B is so alive, W has collapsed already and I had no time and he had lots.] ;B[lo] ;W[ir] ;B[jr] ;W[hq] ;B[jn] ;W[ln]C[oops] ;B[kn] ;W[dl]C[a mess in overtime this was fast overtime that I wasn't very used to either, 20 stones in 5 mins.] ;B[fr] ;W[jq] ;B[kq] ;W[hm] ;B[gm] ;W[gr] ;B[lm] ;W[ll] ;B[mn] ;W[no] ;B[iq] ;W[ar] ;B[aq] ;W[jq] ;B[fi] ;W[in] ;B[kl] ;W[kk] ;B[lk] ;W[lj] ;B[ml] ;W[js] ;B[cg]C[oh dear ... it looks like W has collapsed even more] ;W[fl] ;B[fm] ;W[fj] ;B[gi] ;W[hk]C[huh, how did I escape from that!] ;B[hl] ;W[il] ;B[gl] ;W[hj] ;B[kj] ;W[ls] ;B[ek] ;W[jk] ;B[jm]C[unnecessary] ;W[re] ;B[kr] ;W[ks] ;B[jd] ;W[jc] ;B[ic] ;W[id]C[each move taking only a few seconds, I have to fight back strongly] ;B[je] (;W[ie] ;B[kc] ;W[jb] ;B[lc] ;W[hc] ;B[mc]C[ouch] ;W[lf] ;B[jf] ;W[le] ;B[lg] ;W[mg] ;B[kf]C[what the hell is he doing?] ;W[lh] ;B[kg] ;W[mf] ;B[mh]C[what???] ;W[nh] ;B[mi] ;W[ng] ;B[of]C[I saw that this might cause problems in the corner several moves before, but I had no time to worry about it] (;W[ni] ;B[ld] ;W[mj] ;B[kb]C[huh?] ;W[ib] ;B[ki] ;W[kh] ;B[jh] ;W[li] ;B[ii] ;W[ig] ;B[hi] ;W[im] ;B[me]C[B's result is pretty awful if the Q17 cut wasn't a problem] ;W[rf] ;B[rg] (;W[jg]C[premature!] ;B[gj]C[even bigger! this is the critical endgame point] ;W[if] ;B[pc] ;W[pb] ;B[qc] ;W[qb] ;B[rc] ;W[rd] ;B[rb] ;W[ra] ;B[qa]C[game over and W is dead] (;W[pa] ;B[ob] ;W[gk] ;B[fk] ;W[eg] ;B[eh] ;W[bg] ;B[bh] ;W[df] ;B[fg] ;W[ff] ;B[dg] ;W[ef] ;B[gg] ;W[dr] ;B[as] ;W[fq] ;B[gf] ;W[dp] ;B[co] ;W[ge] ;B[jj] ;W[ik] ;B[ag] ;W[rp] ;B[qo] ;W[ps] ;B[rs] ;W[be] ;B[hf] ;W[he] ;B[ja] ;W[ia] ;B[nb] ;W[ka] ;B[la] ;W[ds] ;B[cs] ;W[hh] ;B[gh] ;W[oh] ;B[ph] ;W[oi] ;B[pj] ;W[mm] ;B[ln] ;W[os] ;B[ro] ;W[qs] ;B[sp] ;W[ja] ;B[ej] ;W[ij] ;B[ji] ;W[af] ;B[ah] ;W[iq]TW[aa][ba][ca][da][ea][fa][ga][ha][ab][bb][cb][db][eb][fb][gb][hb][ac][bc][cc][dc][ec][gc][ic][ad][bd][cd][ed][fd][gd][hd][jd][ae][de][ee][fe][je][ke][jf][kf][kg][lg][mh][mi][er][fr][hr][nr][es][fs][gs][hs][is][ms]TB[ma][na][oa][pa][qa][ra][sa][lb][mb][pb][qb][sb][nc][oc][sc][md][pd][qd][rd][sd][oe][pe][qe][re][se][pf][rf][sf][pg][qg][sg][ch][dh][fh][qh][rh][sh][ai][bi][di][ei][qi][ri][si][aj][bj][dj][fj][qj][rj][sj][ak][bk][ck][dk][qk][rk][sk][al][bl][cl][dl][el][fl][ll][pl][ql][rl][sl][am][bm][cm][dm][km][pm][qm][rm][sm][an][bn][cn][en][fn][pn][rn][sn][ao][bo][so][ap][bp][lp][rp][lq][qq][rq][sq][ar][br][sr][ss]C[B+52.5]) (;W[ob] ;B[sa] ;W[mb] ;B[na] ;W[ma]C[hmm] ;B[qe] ;W[qd] ;B[pf] ;W[sc] ;B[sf])) (;W[qg]C[if only I played this move! then W's position is not so bad] ;B[qh]C[if B answers, there is no longer any issue in the corner] ;W[ej] (;B[pc] ;W[pb] ;B[qc] ;W[qb] ;B[rc] ;W[rb] ;B[rd] ;W[qe] ;B[pf] ;W[sg] ;B[rh] ;W[sc]) (;B[jg] ;W[dk]C[if B isn't sufficiently careful, B could lose the game from here This seems a very close game, but B also has some thinness at B4 and E13, L15]))) (;W[ld]C[probably better just to capture the 3 stones I was worried about the J7 cut, but in hindsight I think this might give me better winning chances])) (;W[hc]C[better])) (;W[kp] ;B[hp] ;W[jq] ;B[hq]C[B gets huge profit] ;W[go]C[there is some aji but I decided it wasn't enough])) (;W[iq]C[should be better than the game])) (;W[lq]C[better? I strongly considered this move])) (;W[ne]C[B said this was good but I disagreed])) (;B[bq]C[I'm not clear what W is doing even here])) (;W[fm]C[perhaps I underestimated how important it was to fight in the centre])) (;B[eo] ;W[cq] (;B[dp] ;W[dq] ;B[em]) (;B[bq] ;W[dp] ;B[co] ;W[do]))) (;W[dl]C[perhaps it is better direction to reduce?])) (;B[nk] ;W[pk] ;B[pj] ;W[qk] (;B[qj] ;W[rj] ;B[ri] ;W[rl] ;B[sj] ;W[rk] ;B[nj] ;W[pn] ;B[pm] ;W[rp] ;B[qo] ;W[qm]C[this was the sort of reading I was looking at]) (;B[qm] ;W[qj] (;B[ph]) (;B[qi] ;W[qh])))) (;B[or]C[a real possibility this time as W has already spent a move at J4] ;W[mq] ;B[mr] ;W[lr] ;B[nr] ;W[lq] ;B[nk])) (;W[rq]C[I get the feeling I really should exchange this first])) (;W[iq]C[normal, and preserve the aji of R8]))