(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[6.50]
PW[Mateusz Surma]PB[Fan Hui]WR[6d]BR[2p]C[This was a game played in the Vienna tournament of 2014 (20-22 june). In this game our new teacher, Mateusz Surma, staged an upset by defeating Fan Hui, a 2dan professional who has been living and teaching go in France for many years.]RE[W+Resign]
;B[dp]
;W[pq]
;B[cd]
;W[pc]
;B[pe]
;W[qe]
;B[pd]
;W[qd]
;B[oc]
;W[qf]
;B[pb]
;W[qc]
;B[ic]
(;W[cn]
(;B[ck]LB[ic:B][oc:C][cd:A]C[This pincer looks good.
But there are still holes in black's position between A-B-C, so that black cannot protect them in 1 move.]
;W[fq]
;B[dn]
(;W[dm]
;B[en]
(;W[cp]
;B[cq]
;W[co]
;B[dq]
;W[em]LB[do:A]C[In this joseki black has a cuttingpoint at A and has to struggle to defend it.]
;B[gp]
;W[cl]
;B[dk]
;W[fp]
;B[go]
;W[gq]
(;B[fm]
;W[fl]
(;B[fn]C[A minor mistake]
;W[jq]
;B[el]
;W[bk]
;B[bj]
;W[bl]
;B[dl]
;W[cm]
;B[ci]
;W[bq]LB[dl:C][cm:D][gm:A][fn:B]C[The difference from joseki and this, is playing by black at A except at B and A looks better for black, because there is less aji in the center. Exchange C and D seems to be losing a ko threat for black, because white wouldn't play there anyway and for black it's going to be sente anytime]
;B[br]
;W[bp]
(;B[hq]
;W[hr]
;B[ir]
;W[iq]
;B[hp]
;W[gr]LB[hp:E][hq:A][iq:D][gr:F][hr:B][ir:C]C[A-F are bad exchanges for black. Black doesn't gain much, and white becomes much stronger.]
;B[do]
;W[ed]
(;B[df]LB[dc:A]SQ[ci][bj][ck][dk][dl][el]C[This move is a bit slow, because black takes points by strong group, so black should probably start fighting at A.]
;W[ef]
;B[eg]
;W[cc]
;B[bc]
;W[dc]
;B[bb]
;W[de]
(;B[cf]
;W[gf]
(;B[fg]C[Slightly slack.]
;W[gc]
;B[ff]LB[id:A][fe:B]C[In the game the atari came too late. White has a choice and may play at A instead of B.]
;W[id]
;B[jd]
;W[ie]
;B[hc]
;W[gd]LB[ff:A]C[Black A has been reduced to a small move.]
;B[nd]LB[jo:B][qo:A]C[Black defends the top. This is a good moment to look at the overall board position. Where should white play?

Both A and B are very big points.]
(;W[jo]LB[gl:A]TR[cc][dc][gc][ed][gd][id][de][ie][ef][gf]C[Therefore in the game white jumped. A multi-purpose move!

This move is really huge, because white gets potential on the lower side. Black's moyo is strongly reduced. White's group on the top becomes stronger. And later, if white gets other stones around, it would be possible for white to play at A and attack black's group.


]
(;B[qo]
;W[pl]
(;B[pn]
(;W[oo]C[This is the only move for white in this situation.]
(;B[on]
;W[nn]
;B[nm]
;W[no]
;B[pp]
;W[oq]
;B[qq]
;W[qr]LB[rq:A]C[Black should probably play at A to take a lot of points in the corner.]
(;B[mm]
;W[rq]
;B[qj]
(;W[pj]
;B[pi]
;W[oj]
;B[ql]
;W[qi]
;B[qh]
;W[ri]
;B[qk]
;W[rh]
;B[ph]
;W[ol]LB[om:B][qm:A][jo:C]TR[fm][dn][en][fn][do][go][dp][gp][hp][cq][dq][hq][br]C[Vital point, there are two cutting points for white at A and B now.]
;B[nh]
;W[mj]
;B[jm]
;W[li]
;B[ln]
;W[lo]
;B[lg]
;W[jk]LB[im:A]C[There is cutting aji at A.]
;B[ko]LB[im:A]C[This prevents the cut at A.]
;W[kp]
;B[kn]
;W[hk]LB[jc:B][qm:A]C[I felt already very happy in this position (I can start ko in A anytime, so I don't have to worry about my group very much).
I thought all groups are not weak (not strong as well).
I don't have eyes in my both groups yet, but black's shape isn't such nice as well - weaknesses at A and B (at B because some moves lower are sente). And if I survive with both groups - I am winning.]
;B[lp]C[If white connects]
(;W[lq]
;B[mo]
;W[mq]
;B[lk]
;W[ji]
;B[ij]
;W[jj]
;B[kh]
;W[lj]
;B[ig]
;W[hh]
;B[il]
;W[ik]
;B[hg]
;W[jc]
;B[kc]
;W[jb]
(;B[ih]
;W[qm]C[After this, I think it's over (white won).]
;B[rm]
;W[rn]
;B[qn]
;W[ro]
;B[rp]
;W[qp]
;B[sp]
;W[pm]
;B[rj]
(;W[om]
(;B[rg]
;W[hl]
;B[hm]
;W[gm]
;B[gn]
;W[in]
;B[im]
;W[ar]
;B[gl]
;W[fk]
;B[aq]C[Why does black play here?
I suppose, it's mireading. Maybe hoping for capturing the stone and later there might be seki in sente for black in white's group (a few points difference).]
(;W[cs]LB[ap:A]C[If white took the stone at A, black could play at this point and have a ko for eye.
That is how white found this move and played there himself.]
;B[qq]
;W[rl]
;B[rr]
;W[rs]
;B[jr]
;W[io]
;B[kr]
;W[kq]
;B[kb]
;W[hb]
;B[ib]
;W[ha]
;B[ia]
;W[fb]
;B[mp]
;W[mn]
;B[ip]
;W[jp]
;B[mr]
;W[lr]
;B[pr]
;W[sr]
;B[or]
;W[nq]
;B[sq]
;W[qp]C[Black resigns])
(;W[ap]C[After white captures, black could make a seki later]
;B[bs]
;W[er]
;B[bn]
;W[ak]
;B[am]
;W[ao]
;B[bm]
;W[an]C[seki]))
(;B[qq]C[Black can not fight the ko]
;W[rl]
;B[rr]
;W[rs]
;B[sr]
;W[pr]C[Black is dead]))
(;W[qg]C[Black is hoping for this?
Maybe, but even after this, my group in the center should be alive, so I am winning.]
;B[sn]
;W[om]
;B[so]
;W[hl]
;B[hm]
;W[gm]LB[ll:A]C[Later, A is sente for white (at least, because black has to survive with his group somehow).]))
(;B[kb]C[If black takes two stones]
;W[kd]
;B[je]
;W[jf]
;B[ke]
;W[kf]
;B[le]
;W[hb]
;B[ib]
;W[hd]
;B[ja]
;W[gg])
(;B[qm]
;W[ll]C[White lives?
Yes]
;B[hi]
;W[gi]
;B[ml]
;W[mk]
;B[kl]
;W[kk]
;B[ki]
;W[nl]))
(;W[mo]
;B[rp]C[This move is very powerful.]
;W[rr]LB[qm:A]C[After white connects here, there is no aji at A anymore. So my group in the center is weak]))
(;W[ok]C[This move looks natural.
However it is easy for black to link up]
;B[oj]
;W[nj]
;B[pj]
;W[mk]
;B[ql]))
(;B[rq]C[Black takes points and is solid]
;W[qm]
;B[ol]
;W[pj]C[White develops the right side]))
(;B[pp]C[Sometimes this joseki is played, but it would be good for white here.]
;W[oq]
;B[qq]
;W[qr]
;B[op]
;W[np]
;B[nq]SQ[jo][iq][jq]C[In the joseki black cuts, and a fight starts. Here the marked stones in place help white in this fight.]
;W[rq]
;B[qp]
;W[rr]C[Now white has got a lot of points on the side.]))
(;W[np]C[This is a soft move.]
;B[rq]LB[oo:A]C[If white played at A, he gets more points.])
(;W[qp]C[If white plays this, black gets a strong shape and white only takes a few points.]
;B[op]
;W[oq]
;B[rp]
;W[rq]
;B[pp]
;W[qq]
;B[np]
;W[mq]
;B[pi]))
(;B[op]C[Not good for black.]
;W[pp]
;B[po]
;W[oo]
;B[pm]
;W[ql]TR[jo][jq]C[White has stones nearby, so he doesn't have to be afraid of fighting so much.])
(;B[qq]C[This is another possibility. Black makes a base quickly.]
;W[qr]
;B[pp]
;W[oq]
;B[rq]
;W[rr]
;B[no]
;W[pn]
;B[op]
;W[nq]
;B[rl]))
(;B[po]C[Playing high makes it more difficult for black to make a base. It's dangerous.]
;W[pl]LB[jo:A]C[This pincer is severe now. A is in a perfect position to attack.]))
(;W[qo]C[When white defends the corner, black can play the other point.]
;B[jo]C[Mateusz was afraid of this move. Now black is getting moyo and is destroying white's moyo, a keypoint for both.]))
(;B[ff]C[Black should play the atari, it gives him a strong follow-up move,]
;W[fe]
;B[fg]
;W[gc]LB[hd:C][fe:B][ff:A]C[because after exchange A-B black may play vital point at C.]
;B[hd]
;W[gd]
;B[he]
;W[ge]LB[hb:A][ig:B]C[Black may play at A or B now.]
(;B[ig]
;W[ib]
;B[jb]
;W[hb]
;B[kc]
;W[jo]
;B[qo])
(;B[hb]
;W[gg]
;B[ig]
;W[gi]
;B[ii]
;W[gk]
;B[hj]
;W[fh]
;B[hl])))
(;B[ce]C[Note that black does not block here, because white is happy to give atari.]
;W[dg]
;B[cf]
;W[ff]
;B[eh]
;W[gc]C[White makes strong shape. Black's left side is overconcentrated. The game is good for white.]))
(;B[dc]C[This is the right direction.]
;W[he]
;B[ie]
;W[ce]
;B[dd]
;W[if]
;B[hf]
;W[de]C[It will be a tough fight for both]))
(;B[do]SQ[fp][fq][gq][jq]C[If black just connects, there is more aji in white's group, so black should probably just play there]))
(;B[gm]C[This is also joseki.]
;W[jq]
;B[el]
;W[bk]
;B[bj]
;W[bl]
;B[ci]
;W[bq]
;B[br]
;W[bp]
;B[do]))
(;B[gn]C[This is a possible joseki.]
;W[jq]
;B[fl]
;W[bq]
;B[br]
;W[bp]
;B[do]
;W[bk]
;B[bj]
;W[bl]LB[ci:A]C[After this joseki black doesn't have to play at A, but in this position I would probably play there anyway.]))
(;W[co]LB[ck:A]C[This is not good for white.
A is low and helps black too much.]
;B[cp]
(;W[em]
;B[fp]
;W[gp]
;B[fm]
;W[ep]
;B[do]
;W[dk]
;B[dj]
;W[ek]
;B[cl]
;W[cm]
;B[fo]C[White has two weak groups.
The group on the left side is heavy!])
(;W[do]
;B[ep]
;W[eo]
;B[fp]C[Black is happy.]))
(;W[cq]LB[dm:A][en:B]C[Invading now us not good for white, because the exchange A-B is bad for white.]
;B[co]
;W[dq]
;B[bn]
;W[po]
;B[hq]LB[en:A]C[Now later.. when black plays here.
This move is more severe because of the stone at A]
(;W[lq]
;B[er]
;W[fr]
;B[eq])
(;W[gq]C[White needs to protect here, which is painful.]
;B[hp])))
(;W[cq]C[Also playable.]
;B[co]
;W[dq]
;B[df]
(;W[ie]
;B[gd]
;W[mc]
;B[ne]
;W[me]
(;B[md]
(;W[nc]C[White resists]
;B[od]
;W[ld]C[Black gets bad shape]
;B[nd]
;W[lc]
(;B[le]C[The most severe, but it is an overplay now.]
;W[mf])
(;B[og]C[Normally, you want to keep your options open.
But without atari, it's a bit better for white.]
;W[mf]
;B[ph]
;W[mh])
(;B[mf]C[Therefore black plays this atari.
This is playable for both.]
;W[le]
;B[og]
;W[ph]))
(;W[ld]C[White will not play here]
;B[nd]LB[ob:A]C[Black protected his cut at A and white has two cutting points]))
(;B[mf]C[Normal idea, but blacks shape still has a weaknes]
;W[le]
;B[ng]
;W[ob]C[White can cut here]
;B[nb]
;W[od]C[black has been cut]
;B[nc]
;W[nd]))
(;W[cm]LB[dm:B][bo:A]C[Later white can extend here to make miai of A and B])))
(;B[dk]C[Note that when black would play a high pincer instead of a low one, things change a bit in the corner for white.]
;W[fq]
;B[dn]
;W[dm]C[Now this move is playable.]
;B[en]
;W[co]
;B[cp]
;W[em]
;B[fp]
;W[gp]
;B[fm]
;W[ep]
;B[do]
;W[cl]
;B[fo]
;W[fl]
;B[gm]
;W[bj]C[Playable for both sides.]))
(;W[cj]LB[cn:A]C[This move is also possible, but playing at A is my style, so I played there.]))