(;
KM[7.50]
PW[Andrew Lu]
PB[Aaron Ye]
WR[6d]
BR[5d]
DT[2013-03-24]
EV[Juju Jiang Youth Goe Cup]
RE[B+Resign]

C[Fuseki Struggles
White:  Andrew Lu 6d
Black:  Aaron Ye 5d
Commentary:  Feng Yun 9p
Game Editor:  Myron Souris
Published in the April 30, 2013 edition of the American Go E-Journal

In this game from the recent Juju Jiang Youth Goe Cup, former Junior Division champion, Aaron Ye beats the Senior Division champion, Andrew Lu.  Feng Yun 9p gives an easy-to-understand but thorough analysis of the struggles in the fuseki and early middle game.

Feng Yun is one of only a handful of women to attain the top rank of 9 dan professional.  She has trained hundreds of young go players at her school in New Jersey.]

;
B[pd];W[dq];B[qp];W[dd];B[oq]
(;
W[qf]
LB[pi:B][qi:A][qj:C]
TR[qp][oq]
C[A Black pincer at A, B, or C are good choices.  "One stone kills two birds":  any pincer here would expand from the lower corner (marked stones) and at the same time attack White's stone.  See the variation.];
B[nc];W[rd]
(;
B[qg]
C[Attaching here is a joseki variation.  The purpose is to block White's extension down the right side.  See the variation.];
W[pg];B[qh];W[ph];B[rf];W[qe]
(;
B[qj]
C[Not a good joseki choice.  Jumping here gives White an extra forcing move, and makes the right side smaller.  See the variation.];
W[pi]
C[White gets this forcing move, which White would not have gotten if Black had extended instead of jumping.];
B[rk]
TR[qp][oq]
C[Now Black's stone drops to the second line, which is good for making a base but not territory.  If you can imagine that the two marked stones in the lower corner are White's, then this would be a good joseki choice for Black.];
W[qc];B[pc];W[re];B[kc]
C[A good move.  Black makes a base for the top group.]
(;
W[ck]
C[See the variation.]
(;
B[gq]
C[See the variation.];
W[do];B[jp];W[ok]
C[Now White gets this perfect move.  Black is behind in the opening.];
B[pm]
C[Black is over-concentrated on the right side.];
W[fc]
C[White expands the corner with a knight's move.  White is leading in the opening.]
(;
B[cd]
C[See the variation.];
W[ce];B[be];W[bd];B[cc];W[bc];B[de];W[cf];B[dc];W[ed];B[bf];W[bb];B[cg];W[df];B[eg];W[ef];B[ff];W[dg];B[dh];W[ee];B[eh]
C[A joseki.  However, White gets a big corner, so White is happy with this result - but only if White adds another move to protect the invasion on the left side.]
(;
W[lq]
C[White rushes to invade Black's territory on the bottom.  One can expect that White will end in gote.  Then Black will invade the life side, which is the more severe invasion.  See the variation.];
B[kq];W[nq];B[or];W[lo];B[jn];W[oo];B[pn];W[lm]
(;
B[ch]
C[Connecting here is too slow.  See the variation.];
W[dm]
C[Now White prevents the invasion.  White is leading on territory.];
B[hc];W[kd]
C[Attaching is a good play.  The purpose is to get some forcing moves that will be useful later on.];
B[ld];W[jc];B[jd];W[ke];B[le]
(;
W[kf]
C[White makes a big mistake here.  See the variation.];
B[jb]
C[Black eliminates the aji.];
W[lc]
LB[lf:A]
C[Adding more dead stones in Black's territory makes the situation even worse.  White should turn at A instead.];
B[ic];W[kb];B[jc];W[lf];B[ne];W[nf];B[kj]
LB[jl:A]
C[An overplay.  Simply jumping at A would be better.];
W[jm];B[in];W[ij];B[jh];W[gg];B[ig];W[gi];B[bj];W[cj];B[bk];W[bl];B[bi];W[if];B[hf];W[ji];B[jg];W[kh];B[mn];W[ln];B[nl]
(;
W[lk]
C[Another mistake.  See the variation.];
B[nk]
(;
W[nj]
C[See the variation.];
B[kl];W[ll];B[kg];W[lg];B[ki];W[lh];B[ik]
C[Black is now on the counterattack!  This is a winning move for Black.  White has some bad aji in the center, so Black uses this advantage to escape from the center.];
W[jk];B[kk];W[il];B[km];W[hk];B[im];W[mj];B[al];W[bm];B[am]
(;
W[an];B[ak];W[bn];B[er]
C[Now Black gets the last big move on the board, and Black is winning. 

White had a very good start, and was leading in the first half of the game, but Black caught up in the second half of the game. 

End of game commentary.];
W[ie];B[hg];W[fg];B[he];W[eq];B[dr];W[cr];B[fr];W[go];B[gm];W[iq];B[jq];W[io];B[jo];W[hn];B[hp];W[hm];B[fp];W[ho];B[ip];W[ej];B[br];W[cq];B[fo];W[fn];B[cs];W[pk];B[ql];W[qi];B[ri];W[op];B[nr];W[mq];B[bq];W[bp];B[eo];W[en];B[ap];W[cp];B[gh];W[fi];B[gb];W[fb];B[fa];W[ea];B[ga];W[db];B[fh];W[qb];B[pb];W[oe];B[nd];W[pa];B[oa];W[qa];B[ob];W[sf];B[rg];W[sg];B[rh];W[nm];B[ol];W[om];B[on];W[nn];B[pl];W[mr];B[pp];W[mm];B[aq];W[ks];B[jr];W[ae];B[bg];W[hi];B[pe];W[pf];B[od];W[of];B[js];W[po];B[qo];W[lp];B[ms];W[lr];B[di];W[jl];B[kn];W[dj];B[af];W[ad];B[sh];W[se];B[li];W[rj];B[sj];W[mi];B[pj];W[oj];B[qk];W[ep];B[mf];W[mg];B[me];W[gc];B[hb];W[fe];B[ge];W[gd];B[ao];W[bo];B[hd]
C[White resigns.]
)
    (;
    W[ak]
    C[Throwing in here is probably the last chance for White to make the game even.  White could reduce Black's space.];
    B[an]
    C[If Black extends in, ...];
    W[fg]
    C[... White's cut is sente];
    B[jf];W[ae]
    C[Then White can kill the group with this hane.];
    B[ag];W[ah];B[bh];W[ad]
    C[Black's group is dead.]
    )
)
    (;
    W[go]
    C[White should attack here.  White has some good forcing moves here, ...];
    B[hp];W[fr]
    C[... then attack from the bottom to increase the territory.]
    )
)
    (;
    W[pj]
    LB[mk:A][ql:B]
    C[Another winning chance.  After simply connecting here, A and B are miai for White.]
    (;
    B[pl]
    C[If Black protects the side, ...];
    W[mk]
    C[... then White jumps to enclose the center.]
    )
        (;
        B[nk]
        C[If Black wants the center, ...];
        W[ql]
        C[... then White can get in the right side.];
        B[pl];W[qk]
        C[Black loses the territory on the side.]
        )
    )
)
    (;
    W[id]
    C[White should atari here to get many more forcing moves.  This move makes a big difference, and is one of White's winning chances.];
    B[je];W[kf];B[ic];W[jb];B[kb];W[if]
    C[Now White creates even more forcing moves.];
    B[ie];W[he];B[hd];W[jf];B[id];W[ge]
    C[Now you see how many free moves White got!];
    B[bj];W[bk];B[cj];W[dj];B[di];W[ae];B[ag];W[bi];B[bh];W[aj];B[ci];W[ej];B[ai];W[io]
    C[White starts another attack, ...];
    B[jo];W[iq]
    C[... peeps to attack the base, ...];
    B[ip];W[kr]
    C[... and when White connects under here, Black's group loses its base.  This way, White will surely turn leading the game into a winning game.]
    )
)
    (;
    B[cm]
    C[Perfect timing.  Black must invade here to keep the territory balanced.  White cannot capture this stone.];
    W[dl]
    C[If White tries to enclose and kill, ...];
    B[cp]
    C[... Black invades the corner for an exchange.];
    W[co];B[dp];W[ep];B[cq];W[eq];B[bo];W[bn];B[bp];W[cn];B[eo]
    C[This makes big trouble for White after Black cuts!]
    )
)
    (;
    W[ek]
    C[An important move to protect against the invasion.];
    B[cm]
    C[If Black invades now, ...];
    W[em]
    C[... then White could enclose.  Too risky for Black.]
    )
)
    (;
    B[bd]
    C[Black has many ways to reduce the corner and side.  I think the best choice in this case is this deep reducing move, the maximum way to reduce the corner and side.];
    W[cd]
    C[A common response.];
    B[be];W[bc];B[ch]
    LB[bb:A]
    C[Black makes a base with a large knight's extension.  Black aims at A next to reduce further.]
    )
)
    (;
    B[ok]
    C[Black should take this opportunity to fixup here.  Black makes a "box shape", which is a very efficient way to make territory.];
    W[jp];B[do]
    C[Then Black invades.]
    )
)
    (;
    W[ok]
    C[If I were White, I would continue reducing Black's right side here.  A vital point for both sides!];
    B[do]
    C[It is painful for Black to add another move on the right side, because the space is so small, but if Black tenukis, ...];
    W[ql]
    LB[qj:A]
    C[... then White will continue to press Black to the second line.  That is also painful for Black.  The reason Black is in this painful situation is because the earlier jump at A was a mistake.]
    )
)
    (;
    B[qi]
    TR[qp][oq]
    C[Extending here is a better choice in this case, because the right side has big potential for Black.  So Black should focus and try to keep as much as possible.];
    W[qc];B[pc];W[re];B[pi]
    C[After Black turns here, you can see that Black starts to make a moyo on the right side.]
    )
)
    (;
    B[qc]
    C[The most common joseki response, but bad for Black in this situation.];
    W[qi]
    C[White happily extends, which settles this group.  And Black's potential on the right side is limited.]
    )
)
    (;
    W[qj]
    C[One option is to invade here with an "old fashion" opening.  It is logical to invade or split in the middle of Black's right side to keep the balance - make sure Black won't expand too much from one side or the other.  I like this move better.];
    B[ql]
    C[Black normally blocks from the bottom side, then White has two choices.  Try both variations below to see which one you like better.]
    (;
    W[qf];B[nc];W[rd];B[qh];W[of];B[pi];W[qc];B[kc]
    LB[pj:A][co:B]
    C[Now if White chooses to escape at A, it can become an early fighting game.  Or White could also tenuki here to expand the corner at B.]
    )
        (;
        W[qg];B[qe];W[mc];B[oc];W[jc]
        C[A slow-paced and balanced opening.]
        )
    )
)

