18th Annual Chicago Class - Expert

Open SwissStandard

47 players participated in this 5-round tournament, held from 18 Jul 2025 to 20 Jul 2025 in Wheeling, IL, United States. 6 titled players from 4 federations. Top 10 Elo average was 1934, and top seed was Kazuma David (🇺🇸 USA, 1985).

Edward Shen (🇺🇸 USA, 1892) won with 4.0/5, ahead of Aaryn Rudrapati (3.5) and Said Elferachi (3.5).

The biggest upset came in round 2: Robert D Whitaker (1440) beat Elizabeth Zhou (WCM, 1706), a +266-point gap.

Location

🇺🇸Wheeling, IL, United States

Dates

18 Jul 2025 → 20 Jul 2025

Time control

Standard: 40 Moves in 80 Min. Del. 30 Sec. / / 30 Min. Del. 30 Sec.

System

Swiss · 5 rounds

Top seed

🇺🇸Kazuma David1985

Avg top 10

1,934

Participants

Titled players · 6

CM×2

WCM×4

Federations · 4 represented

🇺🇸United States of America×44

🇵🇾Paraguay×1

🇮🇳India×1

🇨🇳China×1

Top 3

🥇
Edward Shen
🇺🇸USA·1892
4.0pts·2061perf+40.8
🥈
Aaryn Rudrapati
🇮🇳IND·1730
3.5pts·2067perf+89.2
🥉
Said Elferachi
🇺🇸USA·1911
3.5pts·1954perf+5.8

How it unfolded

Top 6 · 5 rounds

Edward Shen led from R3; +0.5-point edge over the runner-up.

Co-leaders

Shen4Rudrapati3.5Elferachi3.5Lee3.5Yang3.5David3

R3–R5 · LEAD HELD

Edward Shen held the sole lead from R3 through R5 without losing it.

R1–R5 · UNBEATEN

Edward Shen went unbeaten across 5 games (R1–R5).

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Edward Shen	*	—	—	—
2Aaryn Rudrapati	—	*	½	1
3Said Elferachi	—	½	*	—
4Daniel Lee	—	0	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	Pts	Bu C1	Bu	SB	Perf	Δ
1	Shen, Edward	1892	USA	+38B	=12N	+11B	+22B	=14N	4.0	9.5	10.5	8.00	2061	+40.8
2	Aaryn Rudrapati	1730	IND	+7B	+4B	−29N	=3N	+12B	3.5	12.5	14.0	10.75	2067	+89.2
3	Elferachi, Said	1911	USA	+18N	=6B	=21N	=2B	+11N	3.5	11.0	13.0	8.75	1954	+5.8
4	Lee, Daniel	1915	USA	+25B	−2N	+19B	+46N	=35B	3.5	9.0	9.5	5.25	1957	+5.4
5	Yang, Vian	1838	USA	+20B	−22N	+40B	+43B	=13N	3.5	7.5	8.5	5.25	1960	+32.0
6	Higuchi, Hiro	1823	USA	+13B	=3N	−14B	+42N	=8B	3.0	11.5	12.5	6.75	1942	+16.6
7	Xin, StellaCM	1925	USA	−2N	+31B	−18N	+44B	+21N	3.0	9.0	9.5	4.00	1849	-18.8
8	Sahai, Neel	1900	USA	−11N	+45B	=23N	+39B	=6N	3.0	8.5	9.0	4.00	1882	-4.8
9	Vuyyuru, Shriyan	1853	USA	+45B	=11N	=46B	=15N	=23B	3.0	7.5	8.0	4.25	1913	+12.5
10	David, Kazuma	1985	USA	F	F	+44B	+17N	+16B	3.0	5.5	5.5	5.50	2585	+15.0
11	Zhang, Jiemin	1855	CHN	+8B	=9B	−1N	+33N	−3B	2.5	13.5	15.0	6.00	1870	+13.2
12	Anderson, Aaron J	1901	USA	+30B	=1B	=17N	=27B	−2N	2.5	12.0	13.5	5.75	1829	-19.2
13	Menon, Rohan	1820	USA	−6N	F	+20N	+18B	=5B	2.5	10.5	10.5	5.75	1898	+16.4
14	Pullabhotla, Abhinav	1874	USA	F	F	+6N	+29B	=1B	2.5	8.5	8.5	6.50	2157	+42.0
15	Zhang, Ryan	1837	USA	F	+24B	=27N	=9B	=29N	2.5	8.5	8.5	5.25	2000	+34.8
16	Rajkumar, Sachit Srinivas	1879	USA	F	=19N	+41B	+21B	−10N	2.5	8.0	8.0	4.00	1967	+18.0
17	Xu, Alan	1743	USA	F	+47N	=12B	−10B	+18N	2.5	8.0	8.0	3.75	1970	+47.6
18	Xia, ElizabethWCM	1820	USA	−3B	+30N	+7B	−13N	−17B	2.0	11.5	13.0	4.50	1793	-8.4
19	Pittala, Ashvath Reddy	1805	USA	=24N	=16B	−4N	=20B	=40N	2.0	10.0	11.0	3.75	1774	-9.2
20	Chung, Maxwell	1731	USA	−5N	+25N	−13B	=19N	=41B	2.0	10.0	11.0	3.50	1751	+5.2
21	Pena, Faris Adan	1831	USA	+39B	=44N	=3B	−16N	−7B	2.0	10.0	10.5	3.00	1761	-9.6
22	Craigmile, Charles	1805	USA	+26B	+5B	F	−1N	F	2.0	9.5	9.5	5.50	1848	+5.4
23	Herrero, Juan Luis	1871	PAR	F	F	=8B	+26N	=9N	2.0	8.0	8.0	5.00	1866	+1.8
24	Shrigadi, Aryan	1972	USA	=19B	−15N	=32B	=41N	=33B	2.0	7.5	8.5	3.00	1736	-63.2
25	Gurramkonda, Varun	1785	USA	−4N	−20B	+38N	=40B	=39N	2.0	7.5	8.5	2.00	1688	-26.8
26	Whitaker, Robert D	1440	USA	−22N	+38B	=39N	−23B	=34N	2.0	6.5	7.5	2.25	1702	+27.4
27	Li, Tanqi	1858	USA	F	F	=15B	=12N	+32B	2.0	6.5	6.5	4.00	1949	+14.4
28	Ramaswamy, Rohit	0	USA	F	F	+47B	−32N	+44N	2.0	2.5	2.5	1.00	1774	0.0
29	Akintonde, Jimi	1937	USA	F	F	+2B	−14N	=15B	1.5	8.5	8.5	4.75	1814	-10.0
30	Cedeno, Louis	1924	USA	−12N	−18B	=45N	−34B	+38N	1.5	7.0	7.5	1.25	1659	-70.8
31	Sax, Robert	1773	USA	=47B	−7N	−42B	+45N	−36N	1.5	6.0	6.5	0.75	1666	-14.2
32	McCrea, Ryan A	1735	USA	F	F	=24N	+28B	−27N	1.5	6.0	6.0	3.00	1722	-0.6
33	Hamilton, Mark P	1796	USA	F	F	+34B	−11B	=24N	1.5	6.0	6.0	2.50	1865	+5.6
34	Prem, Muthu Avaneesh	1803	USA	F	F	−33N	+30N	=26B	1.5	5.0	5.0	2.50	1720	-9.6
35	Peterson, Brian	1861	USA	F	F	+43N	F	=4N	1.5	4.5	4.5	2.75	2133	+14.4
36	Silvestre, Lucas	1700	USA	F	F	F	=37B	+31B	1.5	3.0	3.0	2.25	2003	+32.0
37	Fei, Irene JiaoCM	1847	USA	F	F	F	=36N	+42B	1.5	2.5	2.5	1.75	1965	+11.6
38	Zhou, ElizabethWCM	1706	USA	−1N	−26N	−25B	+47N	−30B	1.0	9.5	10.0	0.50	1527	-42.8
39	Chu, Leon	1718	USA	−21N	F	=26B	−8N	=25B	1.0	9.0	9.0	2.00	1546	-23.5
40	Ramkumar, Gautham	1733	USA	F	F	−5N	=25N	=19B	1.0	7.5	7.5	2.00	1684	-7.6
41	Lavanur, Mahendra	1865	USA	F	F	−16N	=24B	=20N	1.0	6.5	6.5	2.00	1736	-20.4
42	Gao, Sean	1843	USA	F	F	+31N	−6B	−37N	1.0	6.0	6.0	1.50	1689	-24.8
43	Pikus, Matthew	1965	USA	F	F	−35B	−5N	+46B	1.0	5.5	5.5	0.50	1728	-19.0
44	Kailash, Vaibhav	1733	USA	F	=21B	−10N	−7N	−28B	0.5	10.0	10.0	1.00	1641	-6.2
45	Zhou, AbigailWCM	1815	USA	−9N	−8N	=30B	−31B	F	0.5	9.0	9.0	0.75	1541	-49.6
46	Murali, Rishi	1859	USA	F	F	=9N	−4B	−43N	0.5	7.5	7.5	1.50	1638	-31.6
47	Zhang, MichelleWCM	1793	USA	=31N	−17B	−28N	−38B	F	0.5	7.0	7.0	0.75	1467	-48.8

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Aaryn RudrapatiIND
+89.2
3.5 pts · #2
2Xu, AlanUSA
+47.6
2.5 pts · #16
3Pullabhotla, AbhinavUSA
+42.0
2.5 pts · #12

Top rating losers

1Cedeno, LouisUSA
-70.8
1.5 pts · #32
2Shrigadi, AryanUSA
-63.2
2.0 pts · #26
3Zhou, AbigailWCMUSA
-49.6
0.5 pts · #43

Biggest upsets

R2+266 Elo gap
Whitaker, Robert D1440 beat WCMZhou, Elizabeth1706
R1+195 Elo gap
Aaryn Rudrapati1730 beat CMXin, Stella1925
R2+185 Elo gap
Aaryn Rudrapati1730 beat Lee, Daniel1915