U.S. Championship: So keeps the lead

by ChessBase
10/28/2020 – GM Wesley So continued his excellent form at the 2020 U.S. Championship, scoring 2½/3 today to end with 5½/6 after the second day of play. GM’s Jeffery Xiong and Ray Robson have also been in excellent shape so far as they are tied for second with 5/6, a full two points ahead of the rest of the field.

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Robson and Xiong keep up the pace

Press release by the Saint Louis Chess Club
By IM Kostya Kavutskiy

GM Wesley So continued his excellent form at the 2020 U.S. Championship, scoring 2½/3 today to end with 5½/6 after the second day of play. GM’s Jeffery Xiong and Ray Robson have also been in excellent shape so far as they are tied for second with 5/6, a full two points ahead of the rest of the field.

US Championship 2020

Round 4

The first round of the second day started with five-time champion GM Hikaru Nakamura scoring his first win of the event, using a tricky opening sideline to get a serious edge right out of the gate against GM Alejandro Ramirez:

 
Nakamura vs. Ramirez
Position after 13...Bb7

Nakamura used his healthier pawn structure to earn his first win of the event. | 1-0, 39 moves

Meanwhile GM Wesley So continued his perfect run by defeating GM Sam Shankland on the Black side of a sharp f3-Nimzo. What started off as good opening preparation led to a powerful attack for So, who sacrificed a full rook in order to keep White’s king in the center.

 
Shankland vs. So
Position after 19...Nxe3

Sole leader GM Wesley So produced a fantastic attacking game against fellow Olympic teammate GM Sam Shankland. | 0-1, 34 moves

Keeping pace were Xiong and Robson, who both won their Round 4 games in great fashion. Xiong managed to outplay GM Leinier Dominguez, fending off his opponent’s attack before launching a decisive counterattack of his own. Robson played a fairly solid game, finishing with a nice tactic to win against first-time participant and Saint Louis local, GM Darius Swiercz:

 
Swiercz vs. Robson
Position after 35...Qf2

After the cute back-rank trick 35...Qf2!, with idea 36.Rg1 Re1-+ | 0-1, 42 moves.

 
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1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Nxc6 bxc6 7.Qf3 B46: Sicilian: Taimanov: 5 Nc3 a6. d5 8.Qg3 Nf6 9.Be2 White has an edge. d4 10.e5
10...dxc3N 10...Nd7!= 11.Ne4 Qa5+ 12.c3 dxc3 13.Nxc3 13.Qxc3? Bb4-+ 13...Nxe5 Predecessor: 10...Nd7 11.Ne4 Qa5+ 12.c3 dxc3 13.Nxc3 Qxe5 14.Bf4 Qf6 15.0-0-0 Be7 16.h4 Qg6 1/2-1/2 (34) Karjakin,S (2721)-Mamedyarov,S (2725) Nalchik 2009 11.exf6± gxf6 12.0-0 Don't play 12.bxc3?! Bd6 12...Bd6 13.Qxc3 Bb7 14.Bf3 Qc7 15.g3 Be5 16.Qc5 Bd6 17.Qc4 c5 18.Bxb7 Qxb7 19.Be3 Qb5 20.Qe4 Rc8 21.Rad1 Qc6
22.Qh4! Ke7 23.Rd2 Be5 24.c3 Rcd8 25.Rxd8 Rxd8 26.Qxh7 c4 27.Qh5 Rd3 28.Re1 Qb5 29.Qe2 Qd5 30.h4 f5 31.h5 f4 31...Kf6± 32.Bb6 Bxg3 32.gxf4+- Bf6 32...Bg7 was necessary. 33.Qg4 Bh6 33.Qg4 Qb5?
33...Kd7 might work better. 34.a4 Bh8 34.f5! White is clearly winning. e5 34...Qxf5 35.Qxf5 35.h6 Black must now prevent Bg5. Rd8 36.Bg5 Qd5 37.Bxf6+ Kxf6 38.Qg7+ Kxf5 39.h7 Av CentiPawn Loss W=-10/B=-37. Weighted=-8/-39
1–0
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WhiteEloWBlackEloBResYearECOEventRnd
Nakamura,H2736Ramirez,A25671–02020USA-ch 20204.1
Liang,A2592Lenderman,A2634½–½2020USA-ch 20204.2
Shankland,S2691So,W27700–12020USA-ch 20204.3
Swiercz,D2649Robson,R26730–12020USA-ch 20204.4
Dominguez Perez,L2758Xiong,J27090–12020USA-ch 20204.5
Sevian,S2660Moradiabadi,E2555½–½2020USA-ch 20204.6

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Round 5

In the second round of the day So played one of his best games of the event, defeating Swiercz in a model Grunfeld to reach an incredible 5/5. The last time a player started 4-0 in an invitational U.S. Championship? Bobby Fischer’s historic 11-0 run in the 1963/64 U.S. Championship.

 
So vs. Swiercz
Position after 20...Bxe5

So played a flawless game to reach an impressive 5-0 start. | 1-0, 35 moves

With Xiong, Robson, and Nakamura all drawing their games, Wesley So increased his lead to a full-point over the field heading into Round 6. At the same time, Shankland won an excellent game against GM Alex Lenderman, thanks to his powerful kingside attack:

 
Lenderman vs. Shankland
Position after 22...Nef3

After 22...Nef3! in Lenderman - Shankland, leading to a win for the 2018 U.S. Champion. | 0-1, 45 moves

 
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1.d4 Nf6 2.Nf3 e6 3.c4 b6 4.Bf4 Bb7 5.e3 Bb4+ 6.Nfd2 0-0 7.a3 Be7 8.Nc3 c5 E12: Queen's Indian: Unusual White 4th moves, 4 a3, 4 Nc3 Bb7 5 a3 and 4 Nc3 Bb7 . Black should try 8...Re8= 9.d5! E12: Queen's Indian: Unusual White 4th moves, 4 a3, 4 Nc3 Bb7 5 a3 and 4 Nc3 Bb7 . d6 10.e4 A promising side line. exd5!? A promising side line. 11.cxd5
A promising side line. Much weaker is 11.Nxd5 Nxd5 12.cxd5 f5= 11...Ba6!?
A promising side line. 12.Bc4N Predecessor: 12.Be2 Bxe2 13.Qxe2 a6 14.a4 Nbd7 15.0-0 Re8 16.Nc4 Qc7 17.Rfd1 Bf8 18.g4 1-0 (42) Alexandria,N (2275)-Markovic,G Smederevska Palanka 1985 12...Ne8 13.0-0 Bf6 14.Re1 Bb7 15.Nf3 Nd7 16.Bb5 a6 17.Bxd7 Qxd7 18.e5 dxe5 19.Nxe5 Bxe5 20.Bxe5 Nd6 The position is equal. 21.Qh5 White wants to play Bxg7! Rae8 22.Bxg7 Kxg7 23.Qg5+ Kh8
aiming for ... f6. 24.Qf6+ Kg8 ...Qd8 is the strong threat. 25.Qg5+ Kh8 Strongly threatening ...f6. 26.Qf6+ Kg8 Hoping for ...Qd8. 27.Qg5+ Kh8 Av CentiPawn Loss W=-8/B=-5. Weighted=-8/-6
½–½
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WhiteEloWBlackEloBResYearECOEventRnd
Moradiabadi,E2555Nakamura,H2736½–½2020USA-ch 20205.1
Xiong,J2709Sevian,S2660½–½2020USA-ch 20205.2
Robson,R2673Dominguez Perez,L2758½–½2020USA-ch 20205.3
So,W2770Swiercz,D26491–02020USA-ch 20205.4
Lenderman,A2634Shankland,S26910–12020USA-ch 20205.5
Ramirez,A2567Liang,A25920–12020USA-ch 20205.6

Round 6

In the final round of the day So was finally slowed down, being held to a draw by Dominguez in a relatively calm Berlin. This gave Xiong and Robson an opportunity to catch up within a half point. Xiong was worse for much of his game against another championship newcomer, GM Elshan Moradiabadi, but managed to swindle his way to a win in mutual time trouble.

In one of the sharpest games of the event, Robson got the better of GM Sam Sevian in a King’s Indian, ending in a fantastic queen sacrifice and king hunt in mutual time trouble. But the biggest surprise of the round was GM Awonder Liang’s stunning upset over Nakamura, where the three-time junior champion took advantage of his opponent’s overextended position. 

 
Nakamura vs. Liang
Position after 31...Rc8

Despite his 0-3 start, GM Awonder Liang bounced back brilliantly on Day 2 with 2½/3 | 0-1, 57 moves

Said Awonder, “Whatever way you slice it, it's probably one of the best games I've ever played!”

 
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1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3 e6 8.Bd3 Bxd3 9.Qxd3 Nf6 B19: Classical Caro-Kann: 4...Bf5 main line. 10.Bf4 is the legacy move (10.Bd2). Qa5+ 11.c3 Be7
The position is equal. 12.Nf1N Predecessor: 12.0-0 Nbd7 13.c4 0-0 14.a3 Rfd8 15.Rfc1 Rac8 16.b3 Qa6 17.Qe2 c5 18.Rd1 cxd4 19.Nxd4 1/2-1/2 (24) Hjorth,J (1936)-Hughes,G (2112) ICCF email 2017 12...c5 13.N1d2 Qa6 14.Nc4 0-0 15.g4 Nd5 16.Be5 Better is 16.Bxb8 Raxb8 17.Nce5 16...Nc6 17.g5
Strongly threatening gxh6. 17...h5 18.g6 This costs White the game. White should play 18.dxc5 Bxc5 19.Bg3 18...cxd4-+ 19.Nxd4 Nxd4 20.Qxd4 Rac8 21.Ne3
21...Bc5! Don't do 21...fxg6 22.Nxd5 Bc5 23.Nb4 22.Qe4 Bxe3 23.fxe3 fxg6 24.Bd4 White is in trouble. 24.Qxg6 Rf7 25.Bd4 24...Rf5 White is in trouble. 25.a3 Rcf8 25...Ne7-+ and Black stays clearly on top. White must now prevent ...e5! 26.Qc2 e5 26.0-0-0 Kh7 27.Rhg1 Nf6 28.Qc2 28.Qd3 28...Ng4-+ 29.e4 Rf1 30.c4 R1f3 And now ...e5 would win. 31.e5 Rc8 32.c5 Rcf8 33.Kb1 Rf1 34.Ka2 Rxd1 35.Rxd1 Rd8 36.Rd2 Qc6 37.b4 Rd5 38.Bc3 Ne3 Much less strong is 38...Nxe5 39.Qd1-+ 39.Qc1? 39.Qb3 39...Nf5 40.Qe1 Rxd2+ 41.Bxd2 Qd5+ 42.Kb2 Qd3 43.Bg5 Nd4 ( -> ...Qb3+) 44.Qc3 Qe2+ 45.Kb1 Qxe5 46.a4 a6 47.Kb2 47.Qc4 47...Qe2+ Black is clearly winning. 48.Qd2 Threatening Qxe2. Qe4 49.Qc3 e5 50.Qc4 Qg2+ 51.Kb1 Qc6 52.a5 Nb5 ...Na3+ is the strong threat. 53.Kc1 Qh1+ 54.Kd2 Nd4 55.Qd3 Qg2+ 56.Kc3 Qa2 57.Qd1 Av CentiPawn Loss W=-31/B=-14. Weighted=-29/-11
0–1
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WhiteEloWBlackEloBResYearECOEventRnd
Nakamura,H2736Liang,A25920–12020USA-ch 20206.1
Shankland,S2691Ramirez,A25671–02020USA-ch 20206.2
Swiercz,D2649Lenderman,A26341–02020USA-ch 20206.3
Dominguez Perez,L2758So,W2770½–½2020USA-ch 20206.4
Sevian,S2660Robson,R26730–12020USA-ch 20206.5
Moradiabadi,E2555Xiong,J27090–12020USA-ch 20206.6

Rounds 7-9 of the 2020 U.S. Championship will take place tomorrow, October 28, with live coverage from WGM Jennifer Shahade, GM Yasser Seirawan, and GM Maurice Ashley starting at 12:50 PM CDT on USChessChamps.com, YouTube, and Twitch.

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