Replaying A Pro Game

I just replayed the following game at GoGameWorld.com ... with a lot of interesting comments by Kim Jisuk 7p.
Of course i don`t want to violate any copyright, so i`m sharing it without the commentary... 
By the way, it is very sad that GoGameWorld.com seems to have some troubles and will not exists any longer the way we know it...
On the website it says:
"Important Notice on Oct. 4th: Due to personal matters, we are not able to maintain this site on regular basis, and we may close this site in a year, but we will try to continue adding games for a couple of months. In the meantime, we are looking for a new owner, if you or somebody you know is interested to continue or make any kind of deal, please contact us at tianbi@gogameworld.com. Thank your support for all these years!"  
Anyway... it was a very interesting game for me to replay ... a lot of things were wondering me... for example:
1. How could white allow black to kill his group following  black-31 ...  i would never think that this situation is kind of equal ... i would have bet a lot of money on black! :-) But following the commentary white did not make a mistake so far.
2. Black-39 was very surprising for me ... i think i would have played a silly invasion at the bottom or a extension on the 4 line on the top or the upper right side ... i think this move is a good inspiration ...
3. In the end it was a half point game!!? Without the commentary and without counting i would have been sure that black has a huge lead...
"The final game 3 of 3rd World BC Card Cup was held on 4/26, as a result Lee Sedol 9p overturned the situation in the end and edged over Gu Li 9p by half point, taking 2:1 lead in best-of-5 final. " GoGameWorld News Section 

(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[6.50]
GN[Lee-Sedol_Gu-Li]PW[Gu Li]PB[Lee Sedol]WR[9p]BR[9p]DT[2011-04-26]EV[3rd BCcard Cup World Baduk Championship]RO[final 3]SO[Go4Go.net]RE[B+0.50]
;B[qd]
;W[pp]
;B[dc]
;W[dp]
;B[cn]
;W[fp]
;B[cj]
;W[de]
;B[ce]
;W[dd]
;B[cd]
;W[ec]
;B[df]
;W[cc]
;B[db]
;W[bc]
;B[eb]
;W[fc]
;B[ef]
;W[fe]
;B[bb]
;W[cf]
;B[bf]
;W[cg]
;B[bd]
;W[bg]
;B[ac]
;W[di]
;B[ff]
;W[dj]
;B[ge]
;W[ck]
;B[hc]
;W[cp]
;B[oc]
;W[jp]
;B[pj]
;W[qn]
;B[gj]
;W[ni]
;B[nq]
;W[oq]
;B[np]
;W[ok]
;B[jr]
;W[kq]
;B[po]
;W[qo]
;B[qq]
;W[nr]
;B[oj]
;W[nj]
;B[nk]
;W[ol]
;B[mk]
;W[ph]
;B[pm]
;W[pn]
;B[om]
;W[qk]
;B[pk]
;W[pl]
;B[ql]
;W[nl]
;B[rk]
;W[qm]
;B[qj]
;W[nm]
;B[on]
;W[oo]
;B[lj]
;W[ll]
;B[nh]
;W[nd]
;B[od]
;W[ne]
;B[mh]
;W[oe]
;B[pe]
;W[nc]
;B[ob]
;W[pf]
;B[of]
;W[og]
;B[nf]
;W[qe]
;B[pd]
;W[ng]
;B[mf]
;W[mg]
;B[lf]
;W[lg]
;B[kf]
;W[lh]
;B[qf]
;W[qg]
;B[pg]
;W[jh]
;B[ip]
;W[pf]
;B[re]
;W[kr]
;B[in]
;W[jo]
;B[jj]
;W[mi]
;B[rm]
;W[ig]
;B[ie]
;W[gg]
;B[gn]
;W[hp]
;B[eo]
;W[ep]
;B[jn]
;W[rn]
;B[io]
;W[iq]
;B[ln]
;W[nn]
;B[rg]
;W[gf]
;B[hf]
;W[hg]
;B[fd]
;W[dm]
;B[jq]
;W[ir]
;B[ci]
;W[dk]
;B[dh]
;W[dg]
;B[fh]
;W[eh]
;B[ei]
;W[ch]
;B[fg]
;W[ii]
;B[kk]
;W[gi]
;B[ml]
;W[mo]
;B[dn]
;W[fi]
;B[fo]
;W[je]
;B[jf]
;W[if]
;B[he]
;W[jd]
;B[kc]
;W[kd]
;B[md]
;W[lc]
;B[mc]
;W[ic]
;B[hb]
;W[gd]
;B[ee]
;W[hd]
;B[gc]
;W[rh]
;B[pg]
;W[qi]
;B[qh]
;W[id]
;B[fe]
;W[qg]
;B[ri]
;W[si]
;B[rj]
;W[pf]
;B[sm]
;W[hk]
;B[bo]
;W[bp]
;B[gh]
;W[hi]
;B[ap]
;W[aq]
;B[lo]
;W[lp]
;B[ao]
;W[bq]
;B[bl]
;W[bk]
;B[cl]
;W[sg]
;B[rf]
;W[em]
;B[gl]
;W[il]
;B[jl]
;W[hm]
;B[gm]
;W[go]
;B[ho]
;W[gp]
;B[fn]
;W[im]
;B[ik]
;W[hl]
;B[hn]
;W[jm]
;B[km]
;W[gk]
;B[fk]
;W[hj]
;B[kn]
;W[ae]
;B[be]
;W[dl]
;B[fl]
;W[mb]
;B[ld]
;W[mm]
;B[lm]
;W[cm]
;B[bm]
;W[al]
;B[ki]
;W[jg]
;B[am]
;W[kg]
;B[pg]
;W[af]
;B[ed]
;W[pf]
;B[nb]
;W[ak]
;B[kp]
;W[js]
;B[ko]
;W[bn]
;B[an]
;W[co]
;B[bn]
;W[jq]
;B[sn]
;W[so]
;B[fj]
;W[ej]
;B[mn]
;W[no]
;B[sj]
;W[ij]
;B[jk]
;W[mj]
;B[lk]
;W[sh]
;B[sf]
;W[qh]
;B[oi]
;W[oh]
;B[hh]
;W[ag]
;B[ad]
;W[pg]
;B[ji]
;W[ih]
;B[kl])

“You should look at the board and play wherever you want to. This is the way to get stronger.” Takemiya Masaki