(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[AGA]SZ[19]KM[7.50]TM[5400]OT[5x40 byo-yomi]
GN[US Pro Qualification Championship Round 1 Board 1]PW[Ryan Li ]PB[Matthew Burrall]WR[7d]BR[7d]DT[2015-01-07]EV[US Pro Qualification Championship Round 1 Board 1]RO[1]PC[The KGS Go Server at http://www.gokgs.com/]US[Chris Garlock]C[Matthew Burrall vs. Ryan Li
Pro Qualification Championship, Round 1

Though Ryan is considered the favorite, this is actually one of his losses in the tournament. Let's take a look.]RE[B+Resign]
;B[pd]
;W[dp]
;B[qp]
;W[dc]
;B[nq]LB[nc:D][qf:E][ci:C][qj:B][oq:A]C[A is usually played.
This was actually one of Yoo Chang Hyuk(9p)'s favorite openings.
B, C, D and E are all possible.
C leads to a complicated influence game.
B leads to a slow, long game while D is similar to C.]
(;W[nc]
;B[pf]
;W[jd]LB[cf:A]C[Ryan chose the kobayashi opening.
A is the natural follow up.]
;B[cf]
(;W[de]C[A fairly aggressive opening. Many possible options here.]
;B[bd]LB[df:D][ch:A][dh:B][di:C]C[A, B C and D are all possible options.]
(;W[ch]
;B[df]
(;W[ce]
;B[be]
;W[cc]
;B[bg]
(;W[ei]C[Joseki as well.
]
(;B[ff]
(;W[ef]
;B[eg]
;W[ee]
(;B[dh]
;W[di]
;B[fg]
;W[gd]
(;B[fq]C[Not the right approach.
Black should attack the white 3 stones instead
This approach  helps white settle his group.]
;W[cn]
;B[fo]
(;W[dr]LB[mn:A][eq:B][hq:C]C[Question: Is this move a must to protect to corner? Or is it slow?
The right and lower side look huge!

This is debatable. Another option would be to play B and then tenuki, which is my preference. Both are preferences, this is a rather safe move but it is still viable. Playing tenuki directly is also fine. This move is solid and it provides basis for invasion at C 

White's territory is settled. 
The focus on the game is on black's moyo now.
A is a good point for black now.]
(;B[gi]C[Slow.
This should not be the focus of the board.
]
;W[qk]C[Very big.
]
;B[cl]C[This is not so dangerous for white.]
(;W[gp]LB[el:A]C[Not a good exchange. Makes black thick.
I would simply play A.]
;B[bn]
(;W[co]
;B[cq]LB[fp:A][dq:B]C[I'm not sure with what both players are trying to achieve here.
both A and B are possible for white.]
(;W[fp]
(;B[bo]LB[bp:A]C[This shouldn't work.
Not sure why Ryan did not play A.]
(;W[eq]C[In the real game white gave black a chance.]
;B[cm]C[This result is about even.]
;W[lq]C[Now the right side seems quite urgent for black, but it's difficult to choose.]
(;B[lc]C[Therefore black wants to test a bit first. A big move.]
(;W[qc]C[White invades immediately!

Not the best idea though. Silly white.
]
;B[pc]
;W[pb]
;B[ob]
;W[qb]
(;B[nb]
;W[re]
(;B[qm]SQ[qk]C[Now it is clear for black from which direction he wants to approach the marked stone.]
(;W[qe]C[Not a good exchange.
Black becomes stronger on the outside]
;B[pe]
(;W[ld]LB[jc:A]C[I'm not sure what white is looking at here.
This is very small compared to A.]
;B[kc]
;W[jc]
;B[kd]
;W[ke]LB[le:A]C[If black plays A now white is in trouble.]
(;B[je]C[Wrong cut.
]
;W[jb]
;B[mc]
;W[kf]LB[jb:A]C[A was the key move in this position. Now white has a better result than he should have had.]
;B[ie]
;W[hf]
;B[ig]
;W[nf]
;B[og]
;W[nd]
;B[oc]
;W[jg]
;B[if]
;W[ih]
;B[hg]
;W[hc]
;B[md]
;W[ki]
;B[pj]
;W[pn]
;B[pm]
;W[qh]
;B[mo]
;W[pk]
;B[oj]
;W[ok]
;B[nj]
;W[rl]
;B[lg]
;W[mh]
;B[mg]
;W[nh]
;B[ng]
;W[oh]
;B[nk]
;W[om]
;B[lh]
;W[li]
;B[mi]
;W[ph]
;B[nl]
;W[mj]
;B[ni]
;W[jl]
;B[kp]
;W[jh]
;B[le]
;W[kq]
;B[hl]
;W[lm]
;B[nm]
;W[on]
;B[ol]
;W[qn]
;B[nn]
;W[pp]
;B[pq]
;W[op]
;B[oq]
;W[qq]LB[rp:A]
;B[rp]
;W[rm]
;B[np]
;W[gj]
;B[hj]
;W[hi]
;B[fi]
;W[hk]
;B[gk]
;W[ij]
;B[fj]
;W[gl]
;B[hj]
;W[ik]
;B[gm]
;W[fl]
;B[ip]
;W[jq]
;B[hm]
;W[dm]
;B[ek]
;W[fm]
;B[jp]
;W[iq]
;B[jm]
;W[jn]
;B[im]
;W[km]
;B[kn]
;W[ln]
;B[ko]
;W[ho]
;B[hp]
;W[hq]
;B[go]
;W[fk]
;B[cr]
;W[eo]
;B[gn]
;W[dl]
;B[dk]
;W[ro]
;B[qr]
;W[hh]
;B[gh]
;W[mr]
;B[qj]
;W[rj]
;B[bc]
;W[bb]
;B[ab]
;W[ba]
;B[lk]
;W[kk]
;B[qf]
;W[rf]
;B[qg]
;W[rg]
;B[qi]
;W[ri]
;B[dq]
;W[er]
;B[cp]
;W[in]
;B[io]
;W[fn]
;B[hn]
;W[gj]
;B[kb]
;W[cs]
;B[bs]
;W[ds]
;B[br]
;W[nr]
;B[ja]
;W[ia]
;B[ka]
;W[ic]
;B[ll]
;W[kl]
;B[lj]
;W[ps]
;B[or]
;W[os]
;B[qs]
;W[pl]
;B[kj]
;W[so]
;B[sp]
;W[qo]
;B[rq]
;W[jj]
;B[kh]
;W[ji]
;B[qd]
;W[rd]
;B[fe]
;W[fd]
;B[he]
;W[mq]
;B[el]
;W[em]
;B[cd]
;W[lf]
;B[mf]
;W[dd]
;B[ge]
;W[oa]
;B[na]
;W[pa]
;B[mm]C[white resigns])
(;B[le]
;W[md]
;B[je]
;W[kf]
;B[jb]
;W[ib]
;B[kb]LB[ic:A][lf:B]C[A and B are miai.]
(;W[mf]
;B[ic]
;W[id]
;B[hc]
;W[hd]
;B[gb]C[White didnt gain much.])
(;W[hc]
;B[lf]C[This is a terrible result for white as well.])))
(;W[jc]
;B[qi]
;W[ok]C[Possible.]))
(;W[qg]C[Better to just play here]))
(;B[qi]C[This would be strange to say the least.]
;W[qn]
;B[rf]
;W[qe]
;B[qf]C[If black wants he can make a few points, but it's tiny. On top of that he creates cuttingpoint in his own position.]
;W[pe]
;B[oe]))
(;B[oc]
;W[re]
;B[jb]))
(;W[jc]C[The only move for white.
if black plays A white can play B.]
;B[md]C[When black tries to capture one stone, white can still invade the corner.]
;W[qc]C[Difficult for black.]
(;B[pc]
;W[pb]
;B[ob]
;W[qb]
;B[oc]
;W[re]C[White lives and black feels cramped.])
(;B[qd]
;W[pc]C[White lives comfortably and black needs comfortfood to fill his sad belly. ])))
(;B[qi]C[Approaching from this side poses a difficulty on the lower right.]
;W[qn]LB[pq:A][qq:B]C[When white gets this extension, black's corner gets hurt a bit. 

Because of black's ogeima there is a lot of invading aji at for example A or B.])
(;B[qm]C[Playing here will reinforce the lower right, but...]
;W[qh]C[Now the top right is in PAIN.]))
(;W[bp]
(;B[cp]
;W[bq]C[Captured])
(;B[dq]
;W[eq]
;B[er]
;W[ep]
;B[cr]
;W[fr]
;B[ds]
;W[bm]C[Black is captured.  

Black only captured the corner and lost everything else. The outside became white and black lost too much influence to be compensated.]
;B[cm]
;W[bl]
;B[bk]
;W[ao]
;B[ck]LB[jq:A][ar:B]SQ[ch][di][ei]C[Keep in mind there is still a ko in the corner at B after white plays A. Therefore it is definitely better for white, plus there is bad aji for the 3 stones.]
;W[jq]
;B[qm]
;W[ar]C[thi still makes a ko]
;B[aq]
;W[bq]
;B[br]
;W[bs]
;B[as]C[Ko])))
(;B[dq]C[Like this black can make life in the corner, but white will get  very thick on the outside.]
;W[eq]
;B[er]
;W[ep]
;B[cr]
;W[fr]
;B[ds]
;W[el]
;B[bo]
;W[bp]
;B[cp]
;W[bm]
;B[bq]
;W[cm]C[This is good for white.]))
(;W[dq]
;B[fp]
;W[el]C[Black is in a tough spot.]))
(;W[bo]C[Black was probably hoping for this answer by white.]
;B[dn]C[Now black can help his stones towards the outside.]
;W[co]
;B[fp]LB[cl:B][dn:A]C[Now black has an extra stone at A to help his invasion at B.]
;W[el]C[This is no longer an effective attack]
;B[dm]C[Now white has to run for his life.]))
(;W[el]
;B[dm]
;W[em]
;B[dn]
;W[en]
;B[co]
;W[do]
;B[bn]
;W[cp]
;B[bo]
;W[gp]C[Black is in trouble here.
]
;B[fp]
;W[bp]
;B[ip]
;W[bk]
;B[bl]
;W[ck]
;B[ao]LB[qk:C][ap:A][ip:B]C[Black destroys the side, has corner aji at A and also got a big move on the lower side at B. 
On the other hand white has sente and got the move at C.
It is playable for white.])
(;W[dl]C[This is not so good.
It would result in sacrificing the white stones, which is not preferred.]
;B[dk]
(;W[el]
;B[cm]
;W[dn]
;B[ek]
;W[fk]
;B[fj]
;W[ck]
;B[cj]
;W[bk]
;B[bj]C[White is captured.])
(;W[dm]
;B[ek]
;W[ck]
;B[cj]
;W[bk]
;B[bj]
;W[bl]
;B[fm]C[This is preferred by black.])))
(;B[mn]
;W[qk]C[Possible]))
(;W[qk]C[What happens in the corner later if white plays tenuki, for example here?]
;B[cq]
;W[dq]
;B[cp]C[A bit painful for white])
(;W[eq]C[A strategy to get sente]
;B[fr]
;W[jp]C[A faster way to play for white.]))
(;B[dl]C[A better strategy]))
(;B[fg]LB[dg:A]C[This is possible. Though white's cut A is quite severe.]
;W[dg]
;B[bh]
;W[cg]
;B[bf]
;W[ci]
;B[bi]
;W[cj]
;B[gd]
;W[bj]
;B[bc]
;W[bb]
;B[ab]
;W[ba]
;B[ai]
;W[gb]C[this probably expected.
I personally prefer white because black does not have much territory and has a weak group even though white lost some territory. White is still in an attacking position and has thickness on the left side.]))
(;W[gd]
;B[cn]C[Seen in professional games too.]
(;W[cl]
;B[ci]
;W[bi]
;B[cj]
;W[bj]
;B[dh]
;W[ck]
;B[di]
;W[co]
;B[fq])
(;W[ck]
;B[fp])))
(;B[ci]C[A fancy answer to a fancy keima.

From a game between 
Black: Yamada Kimio 9d 
White: Rin Kanketsu 7d ])
(;B[ef]C[Most common in the pro database.]))
(;W[ef]
;B[dh]
;W[eg]
;B[di]
;W[ck]
;B[ci]C[Classic ]))
(;W[cc]
;B[dh]
;W[cj]
;B[di]
;W[bg]
;B[ff]
;W[gd]
;B[ek]
;W[cl]C[Possible.]))
(;W[dh]
;B[df]
;W[ef]
;B[eg]
(;W[dg]
;B[ee]
;W[ff]
;B[dd]
;W[ed]
;B[ce]
;W[fe]
;B[ec]
;W[de]
;B[db]
;W[cd]
;B[cc]
;W[dd]
;B[fd]
;W[ee]
;B[bb]
;W[fc]
;B[eb]
;W[gd]LB[jd:A][kd:B]C[This is not preferred by white,  because A is too close, it would have been better place at B instead])
(;W[ff]C[This extension for white is more modern than cutting.
Black can simply connect though.
]
;B[dg]
;W[ch]
;B[cc]
;W[cb]
;B[dj]LB[bb:A]C[White's stones are in trouble.
Black wouldn't worry about life or death here because black can live easily with A.])))
(;W[cd]
;B[dj]
;W[cl]
;B[ef]
;W[gd]C[Possible]))
(;W[ci]
;B[pj]
;W[nc]
;B[qf]
;W[jd]
;B[fq]
;W[dn]
;B[jp]C[Influence game])
(;W[qj]
;B[qf]
;W[qm]
;B[de]
;W[ce]
;B[cf]
;W[cd]
;B[cn]
;W[fq]
;B[dg]
;W[fc]
;B[dk]C[Common.])
(;W[qf]
;B[nc]
;W[rd]
;B[qh]
;W[qc]
;B[qe]
;W[re]
;B[pf]
;W[pg]
;B[qg]
;W[rf]
;B[og]LB[nq:A][oq:B]C[Remember this , we talked in episode 182, Tang's toilet move about the difference between A and B]
;W[jp]LB[nq:A]C[Now this move is less interesting for white, with the big keima at A in place]
;AE[nq]AB[oq]
;B[cn]
;W[fq]
;B[dj]
;W[mq]C[This extension is big to play for white]))