(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[6.50]
PW[백 WeiXing Tang(9P)]PB[흑 JungHwan Park(9P)]C[Second game of the semi-finals.]
;B[pd]
;W[dd]
;B[qp]
;W[dp]
;B[nq]
;W[qf]
;B[nc]
;W[rd]
;B[fc]
;W[cf]
;B[qh]
;W[qc]
;B[qe]
;W[re]
;B[pf]
;W[pg]
;B[qg]
;W[rf]
;B[og]
;W[hc]
;B[pj]C[This opening is often played.]
(;W[fq]LB[jp:A]C[White played here instead of A, because black had the ogeima in the lower right corner]
;B[jp]C[So black got this move!]
;W[no]
(;B[pp]C[A thick move. ]
(;W[nl]C[light move.]
;B[ck]
(;W[ci]
;B[bp]
;W[cq]
;B[cn]C[Until now, Park(B) spend less than 10 minutes.
Tang(W) did spend over 30 minutes.]
;W[ec]
(;B[jc]
;W[fd]
;B[pm]
(;W[ob]C[This move was the wrong direction.]
;B[lm]C[Good move.  painful for white!

It will be hard to settle for white without giving black too many points.]
(;W[mm]
(;B[mn]C[The strongest move to take away eyeshape]
;W[nn]
;B[ml]
;W[nm]
;B[ln]
;W[mk]
;B[ll]
;W[oj]
;B[pk]
(;W[oq]
;B[op]
;W[mq]
(;B[mr]C[So black has to retreat]
;W[np]
;B[nr]
;W[lq]
;B[lr]C[Still painful for white although he did find some aji.]
;W[lk]
;B[kk]
;W[kj]
;B[lj]
;W[mj]
;B[li]
(;W[ko]C[White has to find crucial aji here to escape, on this side.]
;B[mi]C[Sente, black build the top a bit.]
;W[ok]
(;B[jl]C[proper move.]
;W[kp]
;B[jq]
;W[jo]
;B[io]
;W[in]
;B[hn]
;W[im]
;B[jj]
;W[ni]
;B[gd]C[good exchange.]
(;W[fe]
;B[ki]
;W[pi]
;B[qi]
;W[lo]
;B[ph]C[This move is big. It makes black stronger and most importantly it takes away whites eye]
(;W[kq]C[White makes his first eye.]
;B[hp]
;W[hm]
;B[gn]
;W[kr]
;B[gr]
;W[pl]
;B[ql]
;W[ol]
;B[oi]
;W[or]
;B[pr]
;W[ls]
;B[os]
;W[nj]C[White lived hardly.

Now, Black is leading a lot
]
;B[fr]
;W[bq]C[Now, Black is ahead about over 10points. Black even has good influence. Park was careless.
 ]
(;B[dr]C[Not necessary, this gave white a chance to fight]
;W[en]
;B[bo]
;W[eq]
;B[er]
;W[dn]
;B[gm]
;W[cm]
(;B[bm]C[This move is a mistake.]
;W[co]
;B[bn]
;W[cl]
;B[bl]
;W[bj]C[Black is also not alive.]
;B[bk]
;W[el]C[Now, something wired for black.]
;B[dl]
;W[dm]
;B[dk]
;W[gl]
;B[fm]
;W[em]
;B[di]
;W[fl]
;B[dh]
;W[ej]
;B[fj]
;W[ek]
;B[dj]
;W[bh]
;B[cg]
;W[bg]
;B[fh]
;W[hd]C[White played the biggest point. now, this game became close.]
;B[eo]C[Strong move. ]
;W[fo]
;B[gp]C[Sente]
(;W[do]
;B[hl]C[Black tried to kill White dragon, but it's hard to do.]
;W[go]
;B[ho]
;W[fi]
;B[gj]
;W[ei]
;B[gg]
(;W[gi]C[This is the losing move.

White started boyomi at move 98.
Black has one hour left.

In this situation Tang played move 144 and afterwards rushed to the tolilet.
But this move is pointed out as the losing move by everyone
Maybe he really wanted to go to the tolilet, so he made a mistake. because of an urgent heart.

 ]
;B[hk]
;W[cr]
;B[fp]
;W[ep]
;B[fn]
;W[hg]
;B[gh]
(;W[hi]
;B[hh]
;W[ih]
;B[ig]
;W[jg]
;B[hf]
;W[ji]
;B[jf]
;W[kg]
;B[mg]
;W[eh]
;B[eg]
;W[kf]
;B[je]
(;W[le]
;B[kh]
;W[jh]
;B[ij]
;W[ii]
;B[lc]
;W[md]
;B[mc]
(;W[lg]
;B[nh]
;W[mf]
;B[ne]
;W[nd]
;B[oc]C[Park(B) was leading from opening. 
because of p18.
but in the middle game, Park played slack moves(d-2,b-7) and played wrong direction. so, there was chance for white. but White missed that.]
;W[oe]
;B[nf]
;W[od]
;B[me])
(;W[mf]
;B[lg]
;W[oe]
;B[pe]
;W[nd]
;B[od]C[dead]))
(;W[ke]
;B[kd]
;W[me]
;B[ld]
;W[mf]
;B[lg]))
(;W[hh]C[Does not work, a big semeai follows]
;B[hi]
;W[eh]
;B[eg]
;W[gf]
;B[fg]
;W[df]
;B[dg]
;W[ap]
;B[ao]
;W[aq]
;B[ar]
;W[ef]
;B[cs]
;W[bs]
;B[ds]
;W[ff]
;B[dq]
;W[cp]
;B[gq]
;W[cj]
;B[fk]
;W[ch]
;B[gk]
;W[ak]
;B[eo]
;W[fo]
;B[go]
;W[al]
;B[eo]C[Black wins]))
(;W[hk]C[A better move]
;B[il]
;W[gi]
;B[hj]
;W[hg]C[Good move]
(;B[hf]
;W[fg]
;B[eh]
;W[gh]
;B[gf]
;W[eg]C[white win by capturing race.])
(;B[gh]
;W[hi]
;B[hh]
;W[ii]C[this point in sente. Now miai]
(;B[ij]
;W[ih]
;B[hf]
;W[ig])
(;B[ih]
;W[ij]))
(;B[gf]
;W[eh]
;B[eg]
;W[df]
;B[dg]
;W[gh]
(;B[ef]
;W[if]
;B[ie]
;W[he]
;B[hf]
;W[ig])
(;B[fg]
;W[if]C[Good move]
(;B[ie]
(;W[he]
(;B[ge])
(;B[hf]
(;W[ig]
;B[hh]
;W[hi]
;B[ih]
;W[ii]
;B[jh]
;W[ij]C[white is leading.])
(;W[ih])))
(;W[ii]
;B[ij]
;W[he]
;B[hf]
;W[ig]C[White wins the semeai])
(;W[cr]
;B[fp]
;W[ep]
;B[fn]
;W[he]
;B[hf]
;W[ih]
;B[hi]
;W[hh]
;B[jf]
;W[ig]
;B[jg]
;W[jh]
;B[kh]
;W[ge]
;B[je]
;W[ef]
;B[ji]
;W[ff]
;B[ii]
;W[ch]
;B[gk]
;W[cj]
;B[fk]
;W[ap]
;B[ao]
;W[aq]
;B[dq]
;W[cp]C[White captures black.]))
(;B[he]
(;W[ii]
;B[ie]
;W[ij])
(;W[ie]
;B[id]
;W[ge]
;B[hf]
;W[ih]C[White win capturing race.]))))))
(;W[hk]C[White can not play tenuki]
;B[cp]
;W[dq]
;B[do]))
(;B[cl]C[Better, now black is sure of two eyes]
;W[el]
;B[bm]
;W[ej]
;B[gc]C[the big place.]))
(;B[gc]C[clear.

Black can easy to win. ]
;W[ge]
;B[hd]
;W[nb]
;B[dr]))
(;W[oi]
;B[nk]
;W[nj]
;B[ol]C[Like this white's eye is false])
(;W[pl]C[There is some aji here, but if black really wants he can take away white's eye]
;B[ql]
;W[ol]
;B[nj]
;W[oi]
;B[nk]
;W[qm]
;B[qk]
;W[pn]
;B[qn]
;W[om]
;B[oo]
;W[rn]
;B[qo]
;W[rl]
;B[rk]
;W[ro]
;B[rp]
;W[so]
;B[sm]
;W[sl]
;B[rm]
;W[sn]
;B[rm]C[White can not make an eye here. But black's territory is damaged a lot. So black would have to kill white for sure.]))
(;W[gc]
;B[fe]
;W[fb]
;B[lo]
;W[lp]
;B[jn]C[B can try to kill W's dragon.]))
(;B[kp]
;W[lo]
;B[jl]
(;W[mo])
(;W[jm]
;B[im])))
(;W[mi]C[White can not escape like this]
;B[lh]
;W[mh]
;B[lg]
;W[mg]
;B[lf]))
(;B[mp]C[Now this move no longer works]
;W[np]
;B[nr]
;W[mo]
;B[lp]
;W[lo]
;B[ko]
;W[lq]
;B[kp]
;W[or]C[different result.]))
(;W[mq]C[White could also consider this attachment, but it is an overplay, white will be cut]
;B[mp]
(;W[np]
;B[oq]
;W[mo]
;B[lp]
;W[lo]
;B[ko]C[doesn't work.])
(;W[oq]
;B[np]
;W[pn]
;B[op]C[Black takes territory, white is still heavy])))
(;B[ll]
;W[ln]
;B[kn]
;W[lo]C[White makes good eyeshape and will settle.]))
(;W[ll]C[Dangerous for white]
;B[kl]
;W[lk]
;B[mm]
;W[nm]
;B[ml]
;W[mk]
;B[nk])
(;W[mk]
;B[kk]
;W[mi]
;B[ki]C[White group is floating]))
(;W[kn]C[White had to reinforce here instead]))
(;B[fd]
;W[he]
;B[ff]
;W[eb]C[black stones become heavy.]))
(;W[cm]C[Also possible]
;B[ch]))
(;W[mq]C[Attaching here is too early]
;B[np]
;W[mp]
;B[mo]
;W[lo]
;B[mn]
;W[kp]
(;B[jo]C[Looks powerful, but is too much]
;W[ln]
;B[mm]
;W[lm]
;B[ml]
;W[jm]C[Surprisingly this is good for W
Black is under attack and although he gained many points on the right side it is hard to find a good continuation for black])
(;B[ln]C[Black should block here and build the center]
;W[kn]
;B[km]
;W[jn]
;B[jm]
;W[in]
;B[im]
;W[hn]
;B[mr]
;W[kq]
;B[fe]C[Good for B])))
(;B[nm]C[An overplay by black]
;W[oq]
(;B[op]
;W[np]
(;B[pq]
;W[mq]
;B[or]
;W[nr]C[easy to settle.])
(;B[mq]
;W[pp]
;B[oo]
;W[po]
;B[on]
;W[qq]C[Blacks moyo has been broken]))
(;B[or]
;W[pq]
;B[np]
;W[po]C[White can settle in good shape]))
(;B[np]C[bad heangma, a bit too crude]
;W[mo]
;B[lp]
;W[pn]C[White makes good shape])
(;B[po]C[Another possibility, and good shape]
;W[pq]
;B[qq]
;W[nl]))
(;W[jp]TR[nq]C[This move is very common when black has a small keima instead of the marked big keima]
;B[cn]
;W[fq]
;B[dj]TR[nq]C[Now the marked stone is in a good place, because white has no good extension on the lower side]
;AE[nq]AB[oq]TR[oq]C[When black has the small keima instead, white has a good follow-up.]
;W[mq]C[This can be played immediately]))