(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[AGA]SZ[19]KM[7.50]TM[1800]OT[5x30 byo-yomi]
GN[2007 US Open ]PW[Jiang Mingjiu]PB[Ge Yongfei]WR[7p]BR[7d]DT[2007-07-31]RO[3]RE[B+4.50]
;B[pd]C[This is the game from the US Open-2007. Black is Ge Yongfei, 7-dan amateur (8-dan AGA). White is Jiang Mingjiu, 7-dan professional]
;W[dc]
;B[dp]
;W[qp]
;B[de]
;W[ce]
;B[cf]
;W[cd]
;B[df]
;W[fc]
;B[cm]LB[cj:A][dj:B]C[A sharp move. Normally Black extends at A or B]
;W[nq]
;B[qk]
;W[hp]LB[iq:A]C[White's extension is unusual. Usually he plays at A]
;B[qn]
;W[qf]
(;B[qh]LB[qe:A]C[Black may also attack this stone at A -]
;W[nd]
(;B[qe]C[A good answer -]
(;W[pf]C[A risky plan -]
;B[oe]
(;W[pj]C[Another risky move -]
(;B[oh]C[The right answer -]
;W[qj]
;B[rj]
;W[ri]
;B[rk]
;W[rh]
;B[rg]
;W[rf]
;B[qg]
;W[of]C[A damaging move, but it's necessary]
;B[ne]
;W[qi]
;B[md]
;W[ph]TR[qg][rg][qh]C[White ends in gote and the marked stones still have some adji]
;B[dd]
(;W[cc]LB[ed:A]C[I would prefer to defend at A -]
;B[hc]C[The opening is promising for Black]
;W[fe]
;B[he]
;W[qc]
;B[pc]
;W[fg]
;B[di]C[Black is happy to defend the left side naturally]
;W[qd]
;B[qb]
;W[pe]
;B[fq]LB[rc:A]C[Usually Black plays the atari at A first]
;W[kd]C[An overplay]
(;B[je]C[It seems that White missed this answer -]
;W[nc]
;B[mc]
;W[mb]
;B[ob]
;W[lc]
;B[le]
;W[nb]
;B[ke]
;W[jc]
;B[gf]
;W[ff]C[White cannot save everything!]
;B[gd]LB[kb:B][fd:A]C[Now White is in trouble. A and B are miai points]
;W[rb]
;B[ra]
;W[sb]
;B[od]
(;W[kb]C[White has no choice -]
;B[fd]C[White destroyes some territory on the top, but Black's position becomes very thick!]
;W[gj]LB[dl:A]C[White may think about the shoulder-hit at A]
;B[fi]
;W[ek]
;B[fj]
(;W[em]C[It's not easy for White to create a flexible shape -]
;B[fk]
;W[fo]C[White's shape is still poor]
;B[co]
;W[eq]
(;B[fp]C[The strongest answer -]
;W[ep]
;B[eo]
;W[dq]
;B[go]
;W[fn]
;B[gp]
;W[cq]
;B[bp]
;W[bq]
;B[gn]C[White got a corner, but his outside position becomes thin]
;W[gm]
;B[hm]
;W[cl]
;B[bl]
;W[bn]
;B[dm]C[The best answer]
;W[cp]
;B[en]
;W[bo]
;B[fm]C[Now Black has a clear lead]
;W[bm]
;B[bk]
;W[kp]
;B[mh]
;W[kk]C[This move is quite deep, but White has no choice]
;B[no]TR[rj][qk][rk][qn]C[A good move, which attacks the central stone and defends the marked group at the same time]
;W[op]
;B[mq]
;W[pn]LB[mp:A]C[Is it better to cut at A?]
;B[qo]C[The right answer]
;W[pp]
;B[np]
;W[nr]
;B[lo]TR[hp][kp]C[Now the marked stones are very weak]
;W[pm]
;B[mr]LB[mk:A]C[Too slow! Black missed a good chance to cut off the central stone at A]
;W[jn]LB[ml:A]C[An overplay. White must think about connecting at A]
;B[lm]
;W[ml]
;B[ll]
;W[lk]
;B[jm]TR[jn]C[We can see that the marked move was clearly wrong]
;W[mm]
;B[ln]
;W[nj]C[Black's group on the right is not yet captured! White has to spend a move for killing it]
;B[ji]
;W[jl]
;B[im]
;W[ij]LB[rp:A]C[If White plays at A, the position would be very close]
;B[jj]
;W[il]
;B[rp]
;W[rq]
;B[rn]C[It seems that White missed this possibility]
;W[sp]
;B[so]
;W[ro]
;B[rc]
;W[rd]
;B[rp]
;W[sq]
;B[ns]C[A painful move in double sente]
;W[pr]
;B[sm]C[A nice tesuji! Now the group is ko-alive]
;W[ro]
;B[ii]LB[sd:A]C[Black can play the threat at A first. It's not damaging at all]
;W[kl]
;B[km]
;W[rp]C[White wins the ko almost free of charge]
;B[bf]
;W[hj]LB[be:A]C[This is the losing move. It's very small!

It was much better to block at A as 10 points in reverse sente]
;B[ac]
;W[ab]
;B[ad]
;W[bc]
;B[be]
;W[ba]
;B[ps]C[Now Black is few points ahead. This is the last note.]
;W[qs]
;B[os]
;W[or]
;B[ms]
;W[er]
;B[fr]
;W[li]
;B[kg]
;W[lh]
;B[lg]
;W[nf]
;B[mf]
;W[fs]
;B[gs]
;W[es]
;B[gr]
;W[qr]
;B[mi]
;W[ki]
;B[hl]
;W[ik]
;B[hi]
;W[ng]
;B[mg]
;W[nh]
;B[ni]
;W[oi]
;B[mj]
;W[mk]
;B[eb]
;W[ec]
;B[fb]
;W[ib]
;B[hb]
;W[db]
;B[ic]
;W[jd]
;B[id]
;W[nn]
;B[oo]
;W[po]
;B[ia]
;W[on]
;B[mo]
;W[cn]
;B[do]
;W[ea]
;B[gb]
;W[ed]
;B[ee]
;W[jb]
;B[am]
;W[bd]
;B[ae]
;W[ch]
;B[dh]
;W[ck]
;B[bj]
;W[gk]
;B[gl]
;W[gi]
;B[gh]
;W[kh]
;B[jh]
;W[dn]
;B[el]
;W[ja]
;B[fa]
;W[da]
;B[ha]
;W[al]
;B[ak]
;W[oa]
;B[an]
;W[ap]
;B[pb]
;W[ld]
;B[me]
;W[ao]
;B[al]
;W[mn]
;B[gc]
;W[sc]
;B[qa]
;W[na]
;B[kj]
;W[lj]
;B[hk]
;W[jk]
;B[sa]
;W[pa]
;B[oc])
(;B[ep]
;W[fp]
;B[gq]
;W[hq]
;B[er]
;W[in]C[This was the plan]))
(;W[fk]
;B[gk]
;W[gl]
;B[hk]
;W[fm]C[This is probably the best way to defend]))
(;W[fd]
;B[kb]
;W[jb]
;B[hb]
;W[ld]
;B[me]
;W[na]
;B[la]
;W[lb]
;B[ka]
;W[ja]
;B[jd]C[His group would be killed]))
(;B[kf]
;W[id]
;B[hd]
;W[jf]
;B[je]
;W[ke]
;B[jg]
;W[if]
;B[ie]
;W[lf]
;B[kg]
;W[me]C[This was the plan]))
(;W[ed]
;B[cc]
;W[bc]
;B[cb]
;W[db]
;B[bf]
;W[bb]C[In my opinion, this is the best way for White]))
(;B[qj]
;W[ph]
;B[pi]
;W[oi]
;B[qi]C[It would be passive for Black to connect like this]))
(;W[ph]
;B[pi]
;W[oh]
;B[ne]
;W[oi]
;B[pj]
;W[rh]
;B[qi]
;W[mi]
;B[md]
;W[di]C[This is probably the best way for White]))
(;W[pc]
;B[qc]
;W[oc]
;B[qb]
;W[kd]
;B[ne]
;W[me]
;B[nf]
;W[pk]
;B[qj]TR[qf]C[I would prefer to keep the game simple by sacrificing the marked stone]))
(;B[pf]
;W[pg]
;B[qg]
;W[pc]
;B[qe]
;W[qc]C[It's a joseki, but Black's position on the right would be overconcentrated]))
(;B[qe]
;W[pf]
;B[nc]
;W[qi]C[It's hard to say, which plan is better]))