(;
PW[Song RongHui]
WR[5p]
PB[Stephanie Yin]
BR[1p]
EV[7th BingSheng Cup World Women's Go Championship]
C[7th BingSheng Cup World Women's Go Championship
White:  Song RongHui 5p
Black:  Stephanie Yin 1p 
Commentary:  Stephanie Yin 1p 
Game editor:  Myron Souris
Published in the December 17, 2016 edition of the American Go Journal

Hi everyone, thanks for watching my game commentory.  This 7th BingSheng Cup World Women's Go Championship is a single elimination tournament of 16 players.  As Black, I am playing against Chinese 5 dan pro Song, Ronghui.  Our game records were very close before I came to the US.  Let's see how this game played.  :)];
B[qd];W[dd];B[pq];W[oc]
C[Instead of taking the lower left corner, White wants to prevent Black from playing on this point.];
B[cp];W[po];B[qo];W[qn];B[qp]
C[I am using a territorial strategy.  So in the very beginning of the game, I want to take as much territory as I can.];
W[pn];B[nq];W[qh]
(;
B[pe];W[ne]
(;
B[pc];W[oh]
C[White completes a high and efficient shape.];
B[mn];W[ob];B[pb];W[gc];B[cj];W[fq];B[dq];W[iq];B[hp];W[hq];B[fp];W[lq];B[hd]
C[A good move according to some of my pro friends!  :)

This shoulder hit reduces White's potential on the top, and at the same time, increases Black's own center moyo.];
W[hc];B[jd];W[id]
LB[dk:A]
C[Maybe now is the time for White to invade with A, instead.];
B[ie];W[ic];B[kf];W[kd]
C[White's last 3 moves are slow.  The top territory is smaller compared with the center moyo.];
B[ej];W[fk]
C[Too late.  White should have invaded earlier.  (B instead of A - see the comment for move 32.)]
LB[id:A][dk:B];
B[eq];W[gp];B[go];W[gq];B[fn];W[fj]
(;
B[fi]
C[Greedy.]
(;
W[ek];B[ei];W[ck];B[bk];W[cl];B[bl];W[cn];B[hj];W[hk];B[ik];W[hl];B[pi];W[qi];B[pk];W[rk];B[bd];W[cc];B[cf];W[df];B[dg];W[ef]
C[Now, both players seem to be reaching the end game.

But Black says no, White has some weakness on the top.  At least I should give it a try.];
B[ld];W[ke]
LB[kc:A]
C[Instead, White should defend with A to help the 3 stones to the right.];
B[le];W[kc];B[lc];W[lf];B[mf];W[lg];B[me];W[mg];B[nf]
C[Black succeeds by killing the 3 top right stones, which is big territory!

In the game review, Ms. Song and I agreed that White should have saved those 3 stones.  (Move 68 should have been at A.)]
LB[kc:A];
W[ce]
C[After losing 3 stones, White needs to catch up on territory.];
B[bf];W[be];B[cm];W[dm];B[bm];W[do];B[eo];W[af];B[gj];W[il]
(;
B[gk]
C[A big mistake!  The timing is bad.  :(];
W[gl];B[fl];W[fm];B[el];W[em];B[dk];W[hn];B[ho]
C[This move is gote!  Now, too late for the outside forcing moves, Black has to connect here in order to continue attacking the center group.];
W[jk]
C[But now, the whole situation is different.  After this atari move, White's escape is much, much easier.];
B[ij];W[ll]
C[At the same time, Black is sort of separated - the two right side stones seem very lonely.];
B[ml];W[mk];B[nl];W[lm];B[rj]
C[Then ...  an unexpected fight starts.];
W[qj];B[rl];W[qk];B[ql];W[rm];B[sl]
C[Unnecessary for Black.  But at that time I was mad at myself for making such a silly mistake earlier.  I couldn't calm down and just wanted to fight, even though I knew it was a bad choice.];
W[mm];B[nm];W[nn];B[no]
C[Black goes into byo-yomi here.];
W[on];B[ol];W[ro];B[pj];W[rq]
C[White jumps to the corner to make more liberties.];
B[ph];W[op];B[pg];W[oq]
C[The result of this huge trade surprisingly turns Black's position good, because White's group on the right is dead for sure, but Black's lower right group still has some aji.];
B[in];W[gn];B[jp];W[kq];B[jm];W[jl];B[ln];W[kn];B[ko];W[km];B[jq];W[jr];B[ir];W[hr]
C[This last exchange is bad for Black's endgame, but I was planning on the variation to Black's next move.]
(;
B[mo]
C[Change of plans for the actual game ...

See the variation.];
W[np]
(;
B[lj]
C[The center is too small.  See the variation.];
W[ki];B[mj];W[lk];B[kg];W[kh];B[ig];W[nj];B[ni];W[mi];B[nk];W[kj];B[oj];W[bo]
C[White takes this move in sente, while making life.];
B[bp];W[jn];B[jo];W[im]
(;
B[bh]
C[Should be the losing move.];
W[lb];B[mb];W[kb];B[ma];W[hf];B[if];W[he];B[ag];W[ae];B[fr];W[lp];B[lo];W[ap];B[aq];W[ao];B[br];W[hg];B[ih];W[eg];B[dh];W[hh];B[hi]
C[Now Black should be losing by 0.5-1.5 points.  I made a small mistake on the bottom left corner at the end.  The game result is Black loses by 2.5 points.];
W[je];B[mp];W[mq];B[sm];W[sn];B[qm];W[rn];B[oo];W[pp];B[li];W[lh];B[mh];W[nh];B[ng];W[mi];B[nj];W[dl];B[bn];W[co];B[fg];W[ff];B[gg];W[gh];B[fh]
C[Black did not have enough ko threats, so White connects the ko at the end.

The game was extremely exciting, even though I lost.  The game lasted for almost 6 hours.  I look forward to the next time.

Thanks everyone for watching it.]
)
    (;
    B[kb];W[jb];B[lb]
    C[Just too big.  :(]
    )
)
    (;
    B[kb]
    C[Black should take the biggest endgame move now.  Some pros think that Black should still be ahead.];
    W[jb];B[lb]
    )
)
    (;
    B[kr]
    C[The planned follow-up to Black's previous move.];
    W[is];B[mq]
    C[I then thought that this move didn't work, but actually it does.  (sigh) ...];
    W[jo]
    C[I couldn't believe that White had this tesuji move.  (sigh again ...)];
    B[kp];W[ip]
    (;
    B[lr]
    C[See the variation.];
    W[lp];B[or];W[qr]
    C[Black is dead.]
    )
        (;
        B[lp];W[lr];B[mr];W[ks];B[or]
        (;
        W[mo];B[qr]
        (;
        W[rr];B[ns];W[ms];B[ls]
        C[I dont't think White is brave enough to fight for this ko.]
        )
            (;
            W[ns];B[rr];W[sr];B[rp];W[sp];B[ms]
            C[Alive!  TT]
            )
        )
            (;
            W[qr];B[mo];W[np];B[mp];W[ns];B[ms];W[os];B[pr];W[ps];B[qq];W[sr];B[rs];W[qs];B[nr];W[rr];B[rp];W[sp];B[sm];W[rn];B[sn];W[so];B[qm];W[pp];B[pm];W[ls];B[om]
            C[Double alive!

Anyway ...  I didn't see these variations, because of byo-yomi.]
            )
        )
    )
)
    (;
    B[jk];W[jl];B[kl];W[km];B[ll];W[in];B[gk];W[gl];B[fl];W[fm];B[el];W[em];B[dk];W[hn]
    C[Much better for Black, who has taken some free outside sente plays.]
    )
)
    (;
    W[gi]
    C[I'm actually hoping White plays here.];
    B[ek]
    C[And then Black closes the left side.  Black A creates 2 cutting points in White's shape.

However, I was too idealistic.]
    )
)
    (;
    B[ek];W[fl];B[el];W[fh];B[cf]
    C[Closing the left side for all the points is good enough for Black.]
    )
)
    (;
    B[nf]
    LB[pk:A]
    C[I should separate White here, because then White needs a move, e.g., A, to protect the right side.]
    )
)
    (;
    B[qf]
    C[Some pro friends suggested to me this variation for Black.];
    W[qc];B[rc];W[pd];B[re];W[pe];B[qb];W[pf];B[pc];W[pb];B[qc]
    )
)

