US Champ R3: Sevian defeats Top Ten

by ChessBase
4/3/2015 – The round was wild for all sides, and all boards, but the news of the round, without question, was 14-year-old Samuel Sevian's defeat of World no.8 Wesley So, who resigned just short of getting mated. This was hardly the only surprise as Nakamura let Kamsky escape after squeezing him the entire game, while Irina Krush was on the wrong side of a massive attack by Paikidze. Nakamura-So tomorrow!

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The 2015 U.S. Championship is an elite national championship event, featuring 12 of the strongest chess players in America. Over the course of eleven rounds, these competitors will battle for $175,000 in prize money, qualification into the World Championship cycle, and the coveted title of 2015 U.S. Champion.

U.S. Chess Championship - Round Three

Table White Score Rating Black Score Rating Result
1 GM Onischuk, Alexander 1.0 2665 GM Troff, Kayden W 1.0 2532 ½-½
2 GM Holt, Conrad 1.0 2530 GM Robson, Ray 1.5 2656 0-1
3 GM Akobian, Varuzhan 1.0 2622 GM Gareev, Timur 0.5 2604 ½-½
4 GM Kamsky, Gata 1.0 2683 GM Nakamura, Hikaru 2.0 2798 ½-½
5 GM So, Wesley 2.0 2788 GM Sevian, Samuel 0.5 2531 0-1
6 GM Naroditsky, Daniel 0.0 2633 GM Shankland, Samuel L 0.5 2661 ½-½

What an amazing round! Last minute blunders, excellent preparations, big turn around. Every round in the U.S. Championship gets better and better!

The Kingside Diner is now a restaurant that belongs to the Chess Club

Onischuk, Alexander ½-½ Troff, Kayden
A game that is extremely difficult to understand. Onischuk popped an absolutely beautiful tactic (19.Nd4!!) and obtained a crushing position. His passed pawn on d7 gave him an easily winning advantage. Black was crushed, basically in a resignable position. White had several ways of winning, both trying to push the pawn to d8 ripping apart the blockade. Also perfectly possible was to go after the weakened black king and try to checkmate it, but Onischuk managed to do neither. Troff pulled a complete miracle and somehow survived after perhaps one of Onischuk's worst games in the last many years.

Alexander Onischuk was visibly upset after his game

Holt, Conrad 0-1 Robson, Ray
Excellent preparation, understanding and calculation from Ray Robson!

Robson chilling with the audience after a great game

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1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 0-0 7.e4 a6 8.e5 b5 9.Qb3 Nfd7 10.Ng5 c5! A fantastic novelty! Holt had played the move Ng5 before against Lisa Schut last year, and Robson must have seen this move and prepared this move. As he explained after the game, Ng5 is supposed to tactically stop c5, but he played it anyways! 11.e6 11.Nxf7 Rxf7 12.e6 Nc6! 13.exf7+ Kf8∞ 11...cxd4 12.Nce4 Nf6 13.exf7+ Kh8 14.Bd3 14.h4 was pointed out by Robson as the main line, and probably the best move. 14...Nc6 15.h4 Ne5! Played after a 30 minute think, and a perfect evaluation of the position. 16.h5! gxh5! A wonderful idea! Black ruins his pawn structure but slows down White's attack. 17.Bf4? 17.Nxf6 exf6 18.Rxh5 h6 forced but sufficient. 19.Nf3 Bg4 20.Rh4 Nxf3+! 21.gxf3 Qe7+! 22.Kf1 f5 17...Nxd3+ 18.Qxd3 Bf5-+ Black has consolidated his position and his extra pawn is simply giving him a decisive advantage. Also f7 is going to drop. 19.g4 Nxe4 20.gxf5 Nxg5 21.Bxg5 Qd5 22.Kd2 Qxf7 23.Rae1 Qxf5 24.Rxh5 Qxd3+ 25.Kxd3 Rf3+ 26.Ke2 Raf8 27.Bxe7 Rxf2+ 28.Kd3 R8f3+ 29.Ke4 Rf7 30.Kd5 d3 31.Bb4 d2 32.Rd1 Bxb2 33.Rg5 h6 34.Rh5 Kh7 35.Ke6 R2f6+ 36.Kd5 Rd7+ 0–1
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WhiteEloWBlackEloBResYearECOEventRnd
Holt,C2530Robson,R26560–12015D97ch-USA 20153.3

Akobian, Varuzhan ½-½ Gareev, Timur
The game had an interesting start, with 1.d4 d6 2.Nf3 h6!?!? 3.e4 g5!?. Unfortunately it was not very interesting after that. The position became some kind of Benoni structure that was eventually drawn.

Timur Gareev took the business casual attire very much on the casual side

Kamsky, Gata ½-½ Nakamura, Hikaru
Miracles happen!

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This battle between two of the usual heavyweights is always highly anticipated. 1.d4 Nf6 2.Nf3 e6 3.Bf4 Kamsky opts for his trusty London system. c5 4.e3 Nc6 5.c3 d5 6.Nbd2 Bd6 7.Bg3 0-0 8.Bd3 b6 9.e4!? It is unusual to play this break before castling. 9.Ne5 is the main move here, which Kamsky has played before. 9...Be7 I like this reaction by Hikaru, keeping his bishop and ensuring a more double-edged fight. 10.e5 Nh5 11.0-0 Bd7 Black is in no rush to capture on g3. 12.Re1 Rc8 13.a3 Nxg3 14.hxg3 f5 I like this move, shutting down the bishop unless White wants to open the bishop for black's pieces. 15.dxc5!? 15.exf6 Bxf6 looks great for Black. 15.b4 would be my choice, and is the logical follow up to a3. 15...bxc5 16.b4 g5 Hikaru tries to make life uncomfortable for the f3 knight. 17.Nh2 This move is highly counterintuitive. 17.bxc5 was what I expected during the game, securing the d4 square for the knight. I'm curious why Gata rejected it. 17...d4 18.b5 dxc3 19.bxc6 cxd2 20.Re2 Bxc6 21.Rxd2 21.Bc4! is more precise, preventing the pawn from reaching this square. 21...Bd5 22.g4? White allows c4 without a fight. 22.Bc4 Bxc4 22...Qc7 is playable, but then White would certainly have played this move. 23.Rxd8 Rfxd8 is what I thought Hikaru's idea might be, but I'm not sure it is so clear after 24.Qa4 22...c4 23.Bc2 f4 Now White really is up against it. 24.Qe2 Qa5 25.Nf3 Rcd8 25...Rfd8 looks far more natural. I'm sure there is a concrete reason Hikaru preferred the other rook, but I don't see it. 26.Rdd1 Rd7 27.a4 Rfd8 28.Rab1 a6 There is no reason to allow Rb5. 29.Rdc1 Ba3 30.Rd1 30.Nxg5 Bxc1 31.Rxc1 c3 and White just can't make any threats. 30...h6 31.Kh2 Bf8 Now Black's kingside is completely secure. 32.Rdc1 Qc5 33.Kg1 Qc6 33...Bxf3 Hikaru was understandably reluctant to give up his bishop, but this looks very strong. 34.Qxf3 Rd2 and with f2 under pressure and e5 falling, White's position looks lost. 34.Rd1 Bg7 I'm not sure I care for the bishop here. 34...Bc5 looks a bit more menacing. 35.Nd4 35.a5 was annoying, threatening Rb6, and if Qc5 36.Be4 gives White a little counterplay. 35...Qc7 36.Nf3 There was some time trouble around here, so there is some repeating. Rb8 36...Bf8 Black had a chance to swing the bishop around again. 37.Rxb8+ Qxb8 38.Be4! Gata of course doesn't miss his chance for this move. Qc8 39.Bc2?! But this one I don't get. 39.Bxd5 Rxd5 40.Rc1 and with the bishop on g7 out of the game and Black's king a little open I think White has good chances to hold. 39...Qc6 40.Nd4 Qc7 41.Nf3 Rd8 42.Bb1 Rb8 43.Bc2 43.Be4! 43...a5 44.Rc1 Qb7 45.Qd1 Qa8 As is often the case, I'm not sure what Hikaru is up to. It looks like he's been futzing around, but there is usually a subtle point to these moves. In this case, I think he wants to avoid Be4 while not running into Nd4. 46.Qe2 Rb4 47.Rd1 Qc6 48.Nd4 Qc7 49.Re1 Qb7 50.Rd1 Bf8 Hikaru is making some progress. 50...Bxg2 51.f3 is not recommended. 51.Nb5 Gata decides that he's done with waiting, so he complicates the game. 51.Kh2 A waiting move might be objectively stronger, but after Rb2 and Bc5 coming it is clear White will be facing real problems. 51...Bxg2 52.Rd8 Bh1 It looks like White is busted. 53.Qf1 Rb2 54.Nd6 Qd5 55.Nf7 Gata plays his last chance. Rxc2? 55...Qc6 56.Bg6 56.Nxh6+ Kg7 doesn't help White. 56...Be4 and White's pieces just can't do a lot. 56.Rxd5 Bxd5 57.Qb1! The only move, and now Hikaru has to sac another exchange. Kxf7 57...Be4 58.Nd6 is possibly what Hikaru missed, and actually White is the one who wins. 58.Qxc2 Kg7 59.Qd2 Bb4 60.Qd4 c3 Neither side can make progress, so they agreed to a draw. Nakamura really outplayed Kamsky this game, but Gata defended stubbornly as he always does and one mistake was enough to throw it away. ½–½
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WhiteEloWBlackEloBResYearECOEventRnd
Kamsky,G2680Nakamura,H2798½–½2015A46U.S. Championship 20153

What a game! Kamsky mentioned that he felt lost most of the game,
but finally felt that after Qb1 he could not lose the game.

So, Wesley 0-1 Sevian, Samuel
Without a doubt the game of the day!

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The battle of Young vs. Younger. 1.Nf3 d5 2.d4 Nf6 3.c4 e6 4.Nc3 c6 5.e3 Nbd7 6.Qc2 Bd6 Sam shows he's not afraid to enter the sharpest lines against the world's best. 7.Bd3 0-0 8.0-0 dxc4 9.Bxc4 b5 10.Bd3 Bb7 11.a3 Rc8 12.Ng5 An ambitious move, famously used by Aronian in h is spectactular loss to Anand. There is no doubt that both players are aware of this game. 12.b4 was the main line, but it has been shown that Black can in fact play c5! anyway. 12...c5 Sevian plays Anand's move. Usually a safe bet. 13.Bxh7+ Wesley's new move. 13.Nxh7 as played by Aronian was punished spectacularly by Anand. Ng4 14.f4 cxd4 15.exd4 Bc5‼ 16.Be2 Nde5! 17.Bxg4 Bxd4+ 18.Kh1 Nxg4 19.Nxf8 f5 20.Ng6 Qf6 21.h3 Qxg6 22.Qe2 Qh5 23.Qd3 Be3 0-1 (23) Aronian,L (2802)-Anand,V (2772) Wijk aan Zee 2013 CBM 153 [Anand, V] 13...Kh8 14.f4 g6 I'd be scared to play this move, but kids often have nerves of titanium. To be fair, I really have no idea what I'd play instead. 15.Bxg6 fxg6 16.Nxb5 Thus far Sam has used far more time than Wesley, and here he slips up. Qe7? 16...Bb8 first was necessary, and Qe7 next move. 17.Qxg6? Wesley lets him off the hook. 17.Nxd6 Qxd6 18.Qxg6 is monstrous for White, with e4-Rf3-Rh3 nearlly impossible to stop. 17...Bb8 Now we are back in less clear territory, with both players on their own. 18.dxc5 18.Bd2 The computer likes this simple developing move, and as much as I hate to agree with machines, it looks very natural. 18...Rxc5 18...Nxc5 was a viable alternative, after which I still like 19.Bd2 19.Nd4 Rg8 19...Nh7 is slightly better, as there is no reason to provoke the queen to h6. 20.Qh6+ Nh7 21.e4 21.h4 I like this move better, mainly cause it ensures the g-file will stay closed 21...Ndf6 22.b4 Rcxg5! Sam correctly sacrifices the exchange. 23.fxg5 Note how if Wesley played h4 this sac would be far less annoying. Be5 23...Ng4 immediately is recommended by the computer, with the idea that 24.Bb2 Be5 transposes to the game. 24.Bb2 I'd give this a question mark, but it's hard to assign them to such natural moves in a crazy position. 24.Nb3! was actually much stronger, keeping g5 securing and inviting Black to grab on a1, which would weaken his dark squares. Bxe4 24...Bxa1 25.Nxa1 can hardly be recommended, given the king on h8 on the open diagonal. 25.Ra2 Ng4 26.Qh5 Bxh2+ 27.Kh1 and Black's king is far looser than White's. 24...Ng4 25.Qh5? This one maybe deserves two, however. Even the best players in the world have their off moments, although it is unclear what exactly Wesley missed here. Sam doesn't miss his chance. 25.Qh3 immediately was necessary, and while the situation is still far from clear, White is still the one on top. 25...Qxg5 25...Rxg5 26.Rf7 would not be recommended for Black, and perhaps was So was hoping for. 26.Qh3 26.Qxg5 Nxg5 and Black's pieces are just massive. 26...Qe3+ 26...Qd2 might be even stronger, but Sevian's way works as well. 27.Qxe3 Nxe3 28.Rf2 Not the best defense, but White's position was hopeless anyway. Ng5! With pieces like this, White's prospects are slim. Sam doesn't let him off the hook from here. 29.Kh1 Nc4 29...Nxe4 was immediately over, with the idea that 30.Re2 Rxg2! leads to mate. 31.Rxg2 Nf2+ 32.Kg1 Nh3+ 33.Kh1 Bxg2# 30.Bc3 Nxe4 31.Rf7 31.Rf3! was one last trick, with the idea that on Nxc3 32.Rh3+ Kg7 33.Rxc3 d4 shouldn't be taken due to Bxd4? 33...Kf6! is still winning. 34.Rg3+ Kh7 35.Rh3+ Kg7 36.Rg3+ with a draw, and if Kf7 37.Rf1+ Black is even worse. 31...Nxc3 32.Rxb7 Bxd4 Black's clump of pieces dominate the board. 33.Rf1 Rg7 34.Rb8+ Kh7 35.g3 e5 36.Rff8 Ne3 37.h4 Ne4 38.Rh8+ Kg6 39.h5+ Kg5 40.h6 The pawn is getting far, but White's king is in far too much danger. Rf7 41.h7 Rf1+ and with mate coming soon, White resigned. Wesley will definitely be disappointed with his missed chances this game, but Sam outcalculated his elite opponent from a difficult position. 0–1
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WhiteEloWBlackEloBResYearECOEventRnd
So,W2788Sevian,S25480–12015D45U.S. Championship 20153

Wesley So was pleasant and in good spirits even after his loss, saying that the opening choice was probably not good as his preparation was not good enough to play such a sharp line. He gave a short interview with Maurice Ashley after the game. His sportsmanship is incredibly high!

Wesley So resigns to Samuel Sevian, and the players sign the scoresheets. At age 14 years
and three months, Sevian is probably the youngest player ever to beat a Top Ten player at
standard time control.

Maurice Ashely quips, "The man of the hour! Except he's only fourteen."

Naroditsky, Daniel ½-½ Shankland, Sam
Another fascinating game. It might make game of the day if there hadn't been three other fabulous games to look at. A complicated Grunfeld ended in an exciting perpetual. It is definitely a game worth reviewing.

Shankland came to the commentary room after the game, and admitted that he was worried through most of the game about being checkmated, but the computer said that both him and Naroditsky played a fantastic game in a very sharp position.

Pairings Round Four

The absolute highlight of the tournament! Hikaru Nakamura vs. Weslsey So showdown will be tomorrow! Make sure not to miss the action on the official website or www.playchess.com

Table White Score Rating Black Score Rating Result
1 GM Troff, Kayden W 1.5 2532 GM Shankland, Samuel L 1.0 2661  
2 GM Sevian, Samuel 1.5 2531 GM Naroditsky, Daniel 0.5 2633  
3 GM Nakamura, Hikaru 2.5 2798 GM So, Wesley 2.0 2788  
4 GM Gareev, Timur 1.0 2604 GM Kamsky, Gata 1.5 2683  
5 GM Robson, Ray 2.5 2656 GM Akobian, Varuzhan 1.5 2622  
6 GM Onischuk, Alexander 1.5 2665 GM Holt, Conrad 1.0 2530

Round three games

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1.d4 Nf6 2.Nf3 e6 3.Bf4 c5 4.e3 Nc6 5.c3 d5 6.Nbd2 Bd6 7.Bg3 0-0 8.Bd3 b6 9.e4 Be7 10.e5 Nh5 11.0-0 Bd7 12.Re1 Rc8 13.a3 Nxg3 14.hxg3 f5 15.dxc5 bxc5 16.b4 g5 17.Nh2 d4 18.b5 dxc3 19.bxc6 cxd2 20.Re2 Bxc6 21.Rxd2 Bd5 22.g4 c4 23.Bc2 f4 24.Qe2 Qa5 25.Nf3 Rcd8 26.Rdd1 Rd7 27.a4 Rfd8 28.Rab1 a6 29.Rdc1 Ba3 30.Rd1 h6 31.Kh2 Bf8 32.Rdc1 Qc5 33.Kg1 Qc6 34.Rd1 Bg7 35.Nd4 Qc7 36.Nf3 Rb8 37.Rxb8+ Qxb8 38.Be4 Qc8 39.Bc2 Qc6 40.Nd4 Qc7 41.Nf3 Rd8 42.Bb1 Rb8 43.Bc2 a5 44.Rc1 Qb7 45.Qd1 Qa8 46.Qe2 Rb4 47.Rd1 Qc6 48.Nd4 Qc7 49.Re1 Qb7 50.Rd1 Bf8 51.Nb5 Bxg2 52.Rd8 Bh1 53.Qf1 Rb2 54.Nd6 Qd5 55.Nf7 Rxc2 56.Rxd5 Bxd5 57.Qb1 Kxf7 58.Qxc2 Kg7 59.Qd2 Bb4 60.Qd4 c3 ½–½
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WhiteEloWBlackEloBResYearECOEventRnd
Kamsky,G2683Nakamura,H2798½–½2015A46ch-USA 20153

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Standings

U.S. Women's Championship - Round Three

Table White Score Rating Black Score Rating
Result
1 WGM Abrahamyan, Tatev 0.0 2322 WCM Virkud, Apurva 1.0 2132
1-0
2 WFM Yu, Jennifer R 0.0 2180 FM Melekhina, Alisa 0.0 2235
½-½
3 WGM Nemcova, Katerina 0.5 2279 WIM Wang, Annie 1.0 1901
1-0
4 WGM Foisor, Sabina-Francesca 0.5 2276 WGM Sharevich, Anna 1.0 2267
1-0
5 WIM Ni, Viktorija 0.5 2188 IM Goletiani, Rusudan 0.5 2311
0-1
6 IM Paikidze, Nazi 0.5 2333 GM Krush, Irina 0.5 2477
1-0

Abrahamyan, Tatev 1-0 Virkud, Apurva
Coming back from two losses to start the tournament, one of the favorites of the tournament - Tatev Abrahamyan - absolutely crushed her opponent in a sharp Najdorf. A good learning experience for the teenage player.

An important victory for Tatev Abrahamyan, getting much needed confidence back

Yu, Jennifer ½-½ Melekhina, Alisa
An interesting English with many positional concepts. Both players handled it relatively well, but Melekhina just played it a bit more precisely. She got a slight edge, but it was never too big. Yu was able to hold the draw.

Jennifer Yu starts with 50% in her first championship

Nemcova, Katerina 1-0 Wang, Annie

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Nemcova, who won possibly the nicest game of the tournament yesterday, continues her upward trend. 1.e4 e6 2.d4 d5 3.exd5 No, she isn't playing for a draw folks. I'm guessing she's trying to avoid her young opponent's preparation and get a position where she can just play chess. exd5 4.Nf3 Nf6 5.Bd3 Bd6 6.0-0 0-0 7.h3 h6 8.c4 White breaks the symmetry by aiming for an isolated pawn position. dxc4 9.Bxc4 Nbd7 10.Nc3 Nb6 11.Bb3 c6 This looks like a very reasonable move, but I think it is slightly inaccurate. 11...Re8 looks more precise, preparing Be6 next move. 12.Ne5 Nbd5 13.Re1 13.Nxd5 Nxd5 14.Qd3 with Bc2 ideas might disturb Black a little more. 13...Be6 Now Black is very solid again. 14.Qf3 Re8 15.Nxd5 Nxd5 16.Bd2 a5 17.a4 17.a3 I slightly prefer this move, as I don't see a reason to give away the b4 square. 17...Be7 18.Rad1 Bg5 19.Qg3 Bh4 I'm not sure I undestand this move. 19...Bxd2 20.Rxd2 Qb6 looks simple and annoying for White to deal with. Note how a4 looks really out of place. 20.Qf3 20.Qd3 with Bc2 ideas gives White some play. 20...Qf6 21.Re4 Qxf3 22.Nxf3 Be7 Black should be extremely solid in this ending, not worse at the very least. 23.Rde1 Kf8 An awkward move, although by itself it isn't so bad. 23...Red8 24.Ne5 Bb4 25.Bxb4 axb4 looks pleasant for Black. 24.Ne5 Red8 White plays a completely natural move, but it allows some tactics. 24...Bf6 was still solid. 25.Nxf7 flashy, although maybe 2nd best. 25.Ng6+ fxg6 26.Rxe6 is more boring, but collecting the bishops looks slightly better. Even so, after Bf6 Black isnt' doing too badly. 25...Bxf7 26.Bxd5 Here Black panicked, however. Rxd5? after the calm 26...Bf6 Black is completely fine. 27.Rxe7 Now Black's position is extremely dangerous due to White's active pieces in addition to the extra pawn. b5 28.Rc7 Rxd4? I'd be slightly too terrified to play this move. 28...Re8 would be my choice, at least eliminating a pair of rooks and hoping to hold a pawn-down opposite bishop position. 29.Ree7! Of course White won't decline the invitation to the 7th. Bd5 29...Rxd2 doesn't help matters. 30.Rxf7+ Kg8 31.Rxg7+ Kh8 and the rooks are devastating, and after a move like 32.f4 threatening f5-f6 Black can almost resign. 30.Bc3 Two rooks and a bishop are a powerful attacking force. Re4 31.Rxg7 b4 32.Bd2 32.Bf6 was even stronger, with the idea that if Rf4 33.Rg6 and with Rxh6 coming in addition to mating threats Black is in no position to stop. 32...Re6 32...Rc8! was the best defense, trying desperately to trade off one of the rooks. 33.Ra7 Ra8 34.Bxh6 should be good enough, but will require some technique. 33.Be3 Now the end is inevitable. Rf6 34.Bc5+ Ke8 35.Rce7+ Kd8 36.Bb6+ and White didn't wait for Re8 mate next move. Nemcova plays another nice game, once again taking advantage of just a couple of errors by her opponent. 1–0
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WhiteEloWBlackEloBResYearECOEventRnd
Nemcova,K2279Wang,A19011–02015C01U.S. Womens Championship 20153

Katerina Nemcova is tied for first with 2.5/3

Foisor, Sabina 1-0 Sharevich, Anna
Foisor obtained a very nice position from her London set up. Sharevich found herself in a bad position as her light-squared bishop was not as strong as White's knight, and Foisor slowly but surely improved her position until she won.

Anna Sharevich was unable to keep up positionally with her opponent

Ni, Viktorja 0-1 Goletiani, Rusudan
An almost ridiculous game from White, where basically every move she played was bad. She was appropiately squashed positionally and tactically.

Paikidze, Nazi 1-0 Krush, Irina
A fabulous attack by the newcomer from Georgia to the American federation, beating the reigning US Champion!

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One of the tournament's new arrivals makes her presence felt with this victory. 1.Nf3 d5 2.g3 Bg4 3.Bg2 Nd7 4.d3 e6 5.Nbd2 There are many move order choices for both sides in the King's Indian Attack. All are quite playable, and it is more a matter of taste than objective value. Bd6 6.0-0 Ne7 6...Ngf6 7.e4 and Black's pieces aren't quite arranged properly, since the e5 threat will be annnoying. 7.b3 Instead of immediately challenging the center, Nazi prefers to finish her development. 0-0 8.Bb2 c5 9.c4 Nc6 10.a3 Re8 11.Qc2 d4 Black transposes to a reverse benoni. 12.e3 12.b4 I'd try to play this move immediately, before Black has the chance to shore up the center with e5. Now after e5 13.Ne4 Bf8 White has a choice between b5 and taking on c5, both with good counterplay. 12...e5 13.Rae1 13.exd4 exd4 13...cxd4 is possible too of course, but White gets in 14.b4 which gives White some breathing room. 14.b4 would still be my preference. 13...a5 Now White's position is very cramped. 14.exd4 cxd4 15.Ne4 Be7 16.h3 Be6 This retreat allows some tactics. 16...Bf5 17.g4 Bg6 and the bishop is much more solid here. 17.Bc1 a logical improving move, but White had an interesting possibility. 17.Nxe5!? Ndxe5 18.f4 is a surprising tactic, which eliminates one of Black's key central pawns. If the knight retreats, f5 will win the bishop. Perhaps Black should try to break up White's pawns with a4!? 19.fxe5 axb3 20.Qxb3 Nxe5 with an unclear game. 17...h6 18.g4 Nazi realizes that she needs to play aggressively to justify her lack of space. Nf8 19.g5! An excellent decision, stirring up trouble before Black covers the dark squares with Ng6. h5?! This looks logical, trying to keep things closed, but it runs into a familar tactical idea. 19...Qd7 simply ignoring the pawn may be best, but it's not easy to play this way. 20.gxh6 Bxh3 21.Qd1 with a mess. 20.Nxe5! Nazi doesn't let this chance pass. Nxe5 21.f4 Qd7?! 21...Nxc4 22.bxc4 Qd7 looks slightly safer, keeping the f-file closed. 22.fxe5 Bxh3? 22...Ng6 was much safer. 23.Qf2 Now Black has real problems. Be6 24.Bf3 This is simple and strong, although not best. 24.Nf6+! was a sweet shot. gxf6 25.gxf6 Bc5 26.Qg3+ Ng6 27.Be4 and Black will be unable to stop White from crashing through with Bxg6. 24...Bg4 24...g6 is ugly, but it isn't clear how White will break through. 25.Ng3 Nh7 Not the best defense, but Irina was in time pressure and even without that the position is extremely difficult to defend. 25...Bc5 26.Bd5 Ne6 holds things together, although after 27.Ne4 Black still faces an uphill battle. 26.Bxg4 26.g6! is immediately crushing, although what Nazi played is quite strong also. fxg6 27.e6! Qc7 28.Bxg4 hxg4 29.Qf7+ Kh8 30.Kg2 and Black will get mated on the h-file. 26...Qxg4 27.Re4?! This makes her life harder. 27.Qxf7+ Kh8 28.Kh2 is simply lost. 27...Qe6 28.Nxh5 Bxg5 29.Bxg5 Nxg5 30.Qg3 30.Qg2 is a bit easier, keeping the queen on a defended square. 30...Qg6 31.Rg4 31.Rh4 was better, maintaining the advantage. 31...Qxh5? A last mistake, and now Nazi doesn't forgive. 31...Rxe5! gets Black back in the game. 32.Qxe5 Nh3+ 33.Kh2 Qxg4 and the position isn't clear anymore. 32.Rxg5 Qh7 33.Rf4 Simple and strong. Rh4 is a nasty threat. Ra6 34.Rfg4! g6 35.Rxd4 White is up a pawn and is dominating in the center. The point is easily reeled in from here. Qg7 36.Rh4 Rae6 37.d4 Rd8 38.d5 Rb6 39.Qe3 Ra6 40.Rhg4 Re8 41.c5 Irina decides she's seen enough. Nazi found the initiative seemingly out of nowhere, and used it to take out the tournament's highest rated player. 1–0
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WhiteEloWBlackEloBResYearECOEventRnd
Paikidze,N2333Krush,I24771–02015A06U.S. Womens Championship 20153

Pairings Round Four

Table White Score Rating Black Score Rating Result
1 WCM Virkud, Apurva 1.5 2132 GM Krush, Irina 1.5 2477  
2 IM Goletiani, Rusudan 2.5 2311 IM Paikidze, Nazi 2.0 2333  
3 WGM Sharevich, Anna 1.0 2267 WIM Ni, Viktorija 0.5 2188  
4 WIM Wang, Annie 1.0 1901 WGM Foisor, Sabina-Francesca 1.5 2235  
5 FM Melekhina, Alisa 1.5 2235 WGM Nemcova, Katerina 2.5 2279  
6 WGM Abrahamyan, Tatev 1.0 2322 WFM Yu, Jennifer R 1.5 2180

Round three games

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1.Nf3 d5 2.g3 Bg4 3.Bg2 Nd7 4.d3 e6 5.Nbd2 Bd6 6.0-0 Ne7 7.b3 0-0 8.Bb2 c5 9.c4 Nc6 10.a3 Re8 11.Qc2 d4 12.e3 e5 13.Rae1 a5 14.exd4 cxd4 15.Ne4 Be7 16.h3 Be6 17.Bc1 h6 18.g4 Nf8 19.g5 h5 20.Nxe5 Nxe5 21.f4 Qd7 22.fxe5 Bxh3 23.Qf2 Be6 24.Bf3 Bg4 25.Ng3 Nh7 26.Bxg4 Qxg4 27.Re4 Qe6 28.Nxh5 Bxg5 29.Bxg5 Nxg5 30.Qg3 Qg6 31.Rg4 Qxh5 32.Rxg5 Qh7 33.Rf4 Ra6 34.Rfg4 g6 35.Rxd4 Qg7 36.Rh4 Rae6 37.d4 Rd8 38.d5 Rb6 39.Qe3 Ra6 40.Rhg4 Re8 41.c5 1–0
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WhiteEloWBlackEloBResYearECOEventRnd
Paikidze,N2333Krush,I24771–02015A07ch-USA w 20153

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Joshua Friedel

Josh was born in 1986 in New Hampshire, USA and is currently living in Wisconsin. He obtained his international master title in 2005 and his grandmaster in 2008. He has participated in six US Championships, including a tie for fourth in 2008. Major Open tournament victories include: the 2003 Eastern Open, 2005 Berkeley Masters, 2008 National Open, 2009 Edmonton International, 2009 North American Open, 2010 Saint Louis Open, 2010 American Open, 2013 Chicago Open.

Josh will be annotating the games for the Saint Louis Chess Club.

Photos by Lennart Ootes

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