(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[AGA]SZ[19]KM[7.50]
PW[Ho Yeungwoo 5d]PB[DH]C[I lost by 4.5

I played the taisha in the opening, but wasn't familiar with the follow up lines, got scared while thinking for 30 mins about variations, and decided to sacrifice everything.

Still, my play after that was quite determined, tenukiing shoulder hits. I messed up one move in the lower left.

I was far behind.

However, he played some slack moves on the right side. He got into deep trouble with two dragons. I had almost run out of main time while he had 40 mins left. I made to kill one of them, but made a basic misread and it became ko. That was pretty much my only chance this game.

He had many ko threats and he lived. I gained large numbers of points in the endgame and thought I might win (no time to count), and maybe still had 2 more winning chances at 183 and 242, but in overtime they are easy to miss.

My 195 was a bit dumb. He made a huge mistake at 208210]
;B[pd]
;W[dc]
;B[pp]
;W[dq]
;B[ce]
;W[cn]
;B[fd]
;W[de]
;B[dd]
;W[ed]
;B[cd]
;W[ec]
;B[ee]
;W[df]
;B[cc]
;W[fc]
;B[ef]
;W[dg]
;B[gd]
;W[hb]
;B[eg]
;W[dh]
;B[db]
;W[eb]
;B[gc]
;W[gb]
;B[ea]
;W[fb]
;B[bb]C[I think this is alphago and I know this is a human joseki, but I don't know what happens next]
;W[eh]
(;B[kc]C[thought for about half an hour, and eventually gave up and didn't want to think anymore, I was too confused.]
;W[gf]
;B[id]
;W[fe]C[locally in terms of points B is still doing well, but there is thinness around O16, the D8 area is more solid, W is just very thick

there is a little aji with F13]
;B[nq]
;W[ic]
;B[jc]
;W[mp]
;B[fq]
;W[hq]
;B[qf]
;W[mq]
;B[np]
;W[mo]
;B[dp]
;W[ep]C[this surprised me too much]
(;B[eq]C[big mistake, this just doesn't work]
;W[do]
;B[hp]
;W[iq]
;B[cp]
;W[cq]
;B[bp]
;W[bq]
;B[dr]
;W[cr]
;B[cs]
;W[bs]
;B[es]
;W[ds]
;B[fp]
;W[eo]
;B[cs]
;W[ar]
;B[ip]
;W[jq]
;B[hm]
;W[gn]
;B[hn]
;W[go]
;B[gp]
;W[pg]C[ladder breaker]
;B[gm]
;W[em]
(;B[kn]
;W[qn]
;B[rp]
;W[qg]
;B[pf]
;W[og]
;B[qj]C[obviously too deep but he now starts playing slack]
(;W[no]
;B[oj]
;W[mh]
;B[mj]
;W[nk]
;B[nj]
;W[ne]C[helping me fix, but I guess W is already in some trouble]
;B[nc]
;W[je]
;B[kf]
;W[kh]
;B[mf]
;W[pi]
;B[pj]
;W[nf]
;B[mg]
;W[nh]
;B[ke]
;W[oo]
;B[ih]
;W[jg]
;B[nr]
;W[op]
;B[pq]
;W[pc]
(;B[qc]C[mistake]
;W[qd]
;B[od]
;W[rc]
;B[qb]
;W[re]
;B[mr]
(;W[jp]C[I'm skeptical this is shape]
;B[lq]
(;W[lp]
;B[kq]
;W[jn]
;B[jo]
;W[io]C[what???]
;B[ko]
;W[kp]
;B[ho]
;W[km]
;B[ln]
;W[mm]
;B[lm]
;W[ll]
;B[kl]
;W[lk]C[ridiculous how many points B just gained here, but I am still in trouble if I can't do something severe]
;B[rf]
;W[pb]
;B[lj]
;W[kj]
;B[li]
;W[lh]
;B[ki]
;W[jf]
;B[om]C[nice, he ends up thinking for 20 mins or so here]
(;W[pm]
;B[ol]
;W[mn]
;B[jm]
;W[on]
;B[po]
;W[pn]
(;B[gr]
;W[jr]
;B[kr]
;W[ks]
;B[lr]
;W[nm]
;B[rb]
;W[sb]
;B[qe]
;W[rd]
;B[rm]C[only move to prevent ko]
;W[rl]
(;B[ql]C[losing move!]
;W[pl]
;B[ok]
;W[qk]C[I missed this ...]
;B[rn]
;W[rj]
;B[qm]
;W[pk]
(;B[ri]
;W[rh]
;B[sj]
;W[sk]
;B[rk]
;W[hr]
;B[sl]C[W has so many local threats]
;W[hs]
;B[ob]
;W[ra]
;B[jd]
;W[ji]C[loses a bunch of points]
;B[hf]
;W[he]
;B[hg]
;W[ie]
(;B[hj]C[big mistake in overtime]
;W[hd]
;B[jh]
;W[gh]
;B[hh]
;W[md]
;B[me]
;W[nd]
;B[ld]
;W[kg]
;B[bg]
;W[bh]
(;B[ib]C[I thought this was sente ...]
;W[fk]
;B[fj]
;W[ej]
;B[fl]
;W[ek]
;B[el]
;W[dl]
;B[cg]
;W[ch]
;B[hc]
;W[ml]
;B[kk]
(;W[ag]C[big mistake]
;B[fi]
;W[ge]C[big mistake]
;B[fg]
;W[ic]
;B[hc]
;W[fa]C[he's lucky to be alive]
;B[bf]
;W[da]
;B[cb]
;W[ha]
;B[fo]
;W[fn]
;B[fm]
;W[en]
;B[ei]
;W[di]
;B[gk]
;W[gi]
;B[gj]
;W[hi]
;B[ii]
;W[mc]
;B[mb]
;W[af]
;B[ae]
;W[ah]
;B[be]
;W[qo]
;B[ro]
;W[ma]C[this isn't good endgame]
;B[lb]
;W[oa]
;B[rg]
;W[sh]
(;B[na]C[another losing move]
;W[nb]
;B[oc]
;W[qa]
;B[la]
;W[sf]
;B[na]
;W[sg]C[he saves S12 in sente which is horrifying, now it is really game over]
;B[pa]
;W[oq]
;B[or]
;W[oa]
;B[pe]
;W[ds]
;B[fh]
;W[gg]
;B[cs]
;W[ia]
;B[ja]
;W[ds]
;B[er]
;W[qp]
;B[qq]
;W[ls]
;B[ms]
;W[js]
;B[gs]
;W[qi]
;B[oi]
;W[si]
;B[rj]
;W[lf]
;B[le]
;W[lg]
;B[lc]
;W[pa]
;B[ng]
;W[of]
;B[oh]
;W[gc]
;B[ca]
;W[ic]
;B[jb]
;W[hc]
;B[cs]
;W[ea]
;B[ds]
;W[lo]
;B[in]
;W[ig]
;B[jj]
;W[se]
;B[nb]
;W[dk]
;B[mi]TW[ga][sa][qb][rb][qc][sc][fd][gd][sd][ai][bi][ci][aj][bj][cj][dj][ak][bk][ck][al][bl][cl][am][bm][cm][dm][an][bn][dn][nn][ao][bo][co][ap][bp][cp][dp][aq][br][ir][as][is]TB[aa][ba][ka][ma][ab][kb][ac][bc][ad][bd][kd][ji][ij][kj][hk][ik][jk][sk][gl][hl][il][jl][rl][im][km][sm][jn][sn][io][so][sp][rq][sq][fr][pr][qr][rr][sr][fs][ns][os][ps][qs][rs][ss]C[W+4.5])
(;B[qh]C[I saw this but wasn't sure that I was behind, having gained so much in the endgame]))
(;W[gj]))
(;B[ek]C[obviously better]))
(;B[jh]C[cut is better]
;W[kg]
;B[ge]C[W in serious trouble]))
(;B[sc]C[I can kill this group, but I doubt that it is enough]
(;W[qi]
;B[se]C[NB my centre group is fine, I did read it])
(;W[sd]
;B[sf]
;W[qa]
(;B[ri]
;W[rh]
;B[sh]C[the dragon is dead unless my B group above is in trouble])
(;B[rh]C[might be better]))))
(;B[rk]C[I had read that this worked, but I thought that my move in the game also worked!

I was low on time and was still trying to play too fast...]))
(;B[nm]C[if it is a ko, this is better as W has very few threats]))
(;W[pl]C[doesn't work]
;B[ol]
;W[ok]
;B[pm]
;W[qm]
;B[pk]
;W[ql]
;B[nl]C[no good move]))
(;W[lr]C[maybe tesuji]))
(;W[lr]C[still best?]))
(;B[od]C[best]))
(;W[pk]C[should be here or something])
(;W[oj]C[or here]))
(;B[fm]C[inexplicable why I didn't play here]))
(;B[do]C[only move]))
(;B[gf]C[obviously should be here]
;W[kc]C[weijin chen said he liked B]))