(;FF[4]GM[1]SZ[19]AP[SGFC:1.13b]

EV[2001 Toyota Oza Tournament, San Francisco, CA]
RO[3]
PB[Zhu Jiu Jiang]
BR[9P]
PW[Jie Li]
WR[6D amateur]
KM[5.5]
DT[2001-12-01]
RE[W+R]

C[Originally published in the Fall 2001-Winter 2002 American Go Journal. Distributed with the American Go E-Journal by special arrangement. Future games will be distributed only with the Member's Edition of the E-Journal; join the AGA today at www.usgo.org   Your comments and suggestions are welcome; send to journal@usgo.org



Commentary by Jie Li: This is the third round of the 2001 OZA tournament. In the second round, I defeated MingJiu Jiang 7p, Jujo's brother, for the second time. So I know this will be a game of revenge.]
WV[1.4o,Unregistered version];B[dp]C[Jujo was Black. I know that he learned a lot from top Korean professionals, such as new openings and joseki. So I decided to play a simple opening.]
;W[pd];B[cd];W[pq];B[nc];W[qf];B[fc];W[cj];B[ch];W[cn];B[gq]
;W[ej]C[W12 is a balancing move. Although C3 is a very attractive place, but I was afraid that if Black gets outside thickness, it will be harder for me to invade Black's upper left corner.]
;B[bp]C[B13 is a big move. If Black played at L16, I would not hesitate to play at C3.]
;W[lc];B[qn];W[qp];B[qk];W[ic];B[qh]C[Both W18 and B19 are big moves, and one side cannot get both.]
;W[cf]C[W20 is the biggest place now, preventing Black from playing at E12.]
;B[ed];W[dc]C[When Black makes a move at 21 to defend his corner, it's really great timing for White to play at 22, which forces Black to make a hard choice.]
;B[dd];
(;W[oc]C[White attacks first with 24.];B[nd];W[ph]C[White 26 is a typical attacking move.]
;B[pi];W[pg];B[jd]C[Black 29 wants White to respond at K17, then Black could make good shape at M16.]
;W[kc]C[I chose to play at 30 to prevent Black getting M16.]
;B[le];W[ke];B[lf];W[nf]C[W34 is a great move, exactly on the shape point; now Black cannot get a satisfactory shape for this group.]
;B[ne];W[oi];B[kd];W[ld];B[jc];W[jb];B[id];W[ib]C[Although H16 is a very attractive move now, Black is afraid of White N15, which could cut off three black stones.]
;B[of];W[hd];B[jf];W[ng];B[mf];W[he];B[if];W[gb];B[fb];W[pj]
;B[qi];W[gg]C[The game is still about even. Black has more territory, but his upper side group is not alive and can be attacked.]
;B[dg];W[kg];B[kf];W[df];B[ef];W[eg]C[I had a sacrifice plan with W58 and 60: If Black kills the two white stones, I will get outside thickness, which would give Black's upper side group a hard time.]
;B[fg];W[eh];B[ff];W[fh];B[gf];W[hf];B[hg];W[gh];B[gc];W[hc]
;B[ih];W[nb]C[W72 aims to make the corner bigger before making the upper side White group alive.]
;B[mb];W[ob];B[mc];W[lb];B[la];W[ka];B[ma];W[ga];B[fa];W[ia]
;B[bf]C[B83 is a tesuji. Now I know that if I cannot gain a lot from attacking Black's center group, I will lose the game.]
;W[oj];B[qj];W[bg];B[cg];W[be];B[af];W[ae];B[ce];W[ag];B[bf]
;W[bi]C[white 94 is a good move];B[de]C[Although Black took two white stones and connected back, his corner has been severely damaged because I can jump into his corner at B17.]
;W[pl];B[qm];W[ij];B[ki];W[iq]C[The game is still about even. However, I feel it is more favorable for White now because White has potential to get more territory. Besides, this move also threatens to invade Black's corner at F3.]
;B[cl]C[Black 101 is a good move, aiming to invade and destroy my territory. Also, if he can get thickness here, he does not need to spend a move to cover the weakness in his corner.]
;W[fq]C[At this point, I know that if I hold back, Black will take the lead, so I ignored B101 and invaded his corner directly. This move is risky, especially when the opponent is a 9 dan professional. But I had the confidence to make it.]
;B[fp];W[gr];B[gp];W[er]C[Black's corner is destroyed, and he must gain some profit from attacking the left side White group in order to catch up on territory.]
;B[bh];W[dl]C[W108 is a good move. I think the white stones on the upper left side are light, so I was willing to sacrifice them.]
;B[ai];W[aj];B[ah];W[cm]C[Black has killed four white stones and gained a lot of territory, but his corner is very weak now.]
;B[eq];W[fr];B[dr]C[Black 113 and 115 are probably the losing moves; he should play at C2 to be safe.]
;W[cq]C[W116 is a keen tesuji. If White does not play here immediately, Black can play at E1 to block this move in sente.]
;B[dq];
(;W[cr];B[es];W[cp];B[hr];W[ir];B[gs];W[do]C[White 124 seems to be a very slow move, but it is actually a very thick move with points. I would say this is in fact the winning move. Now, White has more territory and potential points, and Black's group here is not alive yet. At this point, I knew I had won this game.]
;B[nq];W[eo]C[White 126 destroys Black's eye, forcing him to escape.]
;B[ho];W[jo];B[el];W[ek];B[no]C[Black has to play here to save his O3 stone.]
;W[mp];B[np];W[jm]C[Now it is a simple matter of a double attack for White. Because Black has two weak groups and even his upper side group is not completely alive, there is no doubt that one of them is going to be killed.]
;B[jp];W[ip];B[io];W[ko];B[kq];
(;W[kr];B[lr];W[jq];B[ks];W[jr];B[im];W[jl];B[gm]C[Now I can just play the peep at H8 to kill the Black group, but I want to make sure this group is safe since I know I will win for sure.]
;W[lq];B[il];W[po]C[Black 149 made one group alive, but another group is cut by White 150, and this group is surrounded by White's thickness with no way to escape.]
;B[or];W[on];B[nn];W[om];B[mr];W[ik]C[White 156 is sente because I can play at H8 to kill this Black group.]
;B[lp];W[kp];B[hk];W[mq]C[White comes back at 160 to take out Black's eyes. I would say this group is dead now.]
;B[nm];W[nl];B[ml];W[ln];B[nk];W[ol];B[pr];W[qr];B[oq];W[ns]
;B[pp];W[op];B[oo]C[Black 169 and 173 are tesuji to cut White's connection. However, because White is just too thick here, these tesuji are useless.]
;W[pp];B[pn];W[rq]C[Now White's corner is alive.];B[ro];W[rp]
;B[pe];W[qe];B[mj];W[mm];B[oh];W[og];;B[nh];W[mh];B[ni];W[mi]
;B[nj];W[lj];B[ll];W[ok];B[mk];W[kl]C[Black is dead.])
(;W[kp];B[kr];W[jq];B[is]C[If White simply plays the atari, there would be a ko.]
))
(;W[cp];B[bq];W[cr];B[co];W[do];B[bo];W[ds];B[ep];W[hr];B[br]
;W[cs];B[es];W[fs];B[bs];W[es];B[dn]C[In this variation, White does not gain much, and his left side group is weaker.]
))
(;W[eb];B[fb];W[cc];B[bc];W[bb];B[bd];W[ab];B[ec];W[db];B[ea]
;W[ca]C[White can live in the corner. However, it is not time to make these moves because there are a lot of bigger places to play.]
))


