CChessStats

2025 Summer Tuesday Night Marathon - 2000 and Over Round 4-7

Open SwissStandard

33 players participated in this 4-round tournament, held from 29 Jul 2025 to 19 Aug 2025 in San Francisco, CA, United States. 5 titled players from 4 federations. Top 10 Elo average was 2077, and top seed was Aryan Achuthan (🇺🇸 USA, CM, 2243).

Aryan Achuthan (🇺🇸 USA, CM, 2243) won with 3.5/4, ahead of Bradley R Diller (3.5) and Alex Shrauger (3.0). Achuthan shared the lead from round 1, winning on tie-break.

The biggest upset came in round 3: Bradley R Diller (1904) beat Andy Lee (FM, 2190), a +286-point gap.

Location
🇺🇸San Francisco, CA, United States
Dates
29 Jul 2025 → 19 Aug 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 4 rounds
Top seed
🇺🇸CMAryan Achuthan2243
Avg top 10
2,077
Participants
33
Titled players · 5
IM×1
FM×1
CM×1
WFM×2
Federations · 4 represented
🇺🇸United States of America×30
🇲🇳Mongolia×1
🇮🇳India×1
🇫🇷France×1
Top 3

How it unfolded

Top 6 · 4 rounds

Tight race until R4; 2 players tied at 3.5/4, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 2 at the finish.

Co-leaders
11
4
2
2
1234R1R2R3R4
R4 · TIEBREAK CLUSTER

2 players finish on 3.5/4. Achuthan takes the title on Buchholz Cut1 (9.0).

R4 · HEAD-TO-HEAD · WINNER VS 2ND

CM Aryan Achuthan drew with Bradley R Diller (White).

WIN STREAKS · 2 top finishers

CM Aryan Achuthan 3 wins (R1–R3)Bradley R Diller 3 wins (R1–R3)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1CMAryan Achuthan*
½
1
2Bradley R Diller
½
*
3Alex Shrauger
0
*
4WFMByambaa Uyanga*

Grille américaine

#PlayerEloFedR1R2R3R4PtsBu C1BuSBPerfΔ
1Achuthan, AryanCM2243USA+18B+4B+3N=2B3.59.010.58.752322+12.8
2Diller, Bradley R1904USA+31N+11B+23B=1N3.56.56.54.752397+44.4
3Shrauger, Alex2032USA+23B+16N1B+26N3.06.07.03.502307+28.6
4Heiserman, Jimmy2163USA+17B1N+16B=7N2.57.59.04.252090-6.2
5Lewis, Edward1827USA=22N+6B=12N=20B2.56.07.55.002023+20.6
6Uyanga, ByambaaWFM2006MGL+28B5N=13B+25N2.55.56.02.501881-11.8
7Atkeson, Christopher Timothy1979USAF+24B+20N=4B2.55.05.03.752213+16.8
8Kulkarni, Neil1625USA19B+17N+27B=16N2.54.55.02.751944+65.2
9Smith, Roger1805USA+30B=13N+29B21N2.53.53.51.001968+16.8
10Rajaram, Raghu1835USA=25N+30N11B+27N2.53.53.51.001914+8.2
11Bambou, Christophe1976FRAF2N+10N+19B2.07.57.54.001992+1.2
12Nguyen, Darian1955USA+27B=14N=5BF2.05.05.02.751982+2.2
13Santos Jr, Catalino1769USAF=9B=6N+29B2.05.05.02.502006+37.6
14Winslow, ElliottIM1968USA16N=12B=19N+32N2.05.05.01.751875-10.2
15Tomar, Kshitij1726USA+33B+29N17B24N2.02.52.50.001816+19.2
16Cawthon, Jeremy David1866USA+14B3B4N=8B1.58.010.03.251860-1.8
17Walder, Michael1893USA4N8B+15N=18B1.57.08.52.751733-17.8
18Gnana Hari Sekar, Easwar1766USA1N=27N=21B=17N1.56.57.01.751886+18.0
19Clemens, Kristian1863USA+8NF=14B11N1.56.56.53.501856-0.2
20Chen, Qinhong1849USA+24B23N7B=5N1.56.07.02.251864-0.6
21Hao, Max2058USAF26B=18N+9B1.55.05.03.251909-21.2
22Sanat Singhal1901IND=5BF+24NF1.53.53.52.252011+5.4
23Lee, AndyFM2190USA3N+20B2NF1.08.08.01.501803-28.6
24Mercado, Adam1809USA20N7N22B+15B1.06.07.52.001671-14.0
25Krishnan, Sreyshthaa1694USA=10BF=28N6B1.05.55.51.501773+10.4
26Tsodikova, NataliaWFM2155USAF+21NF3B1.04.54.51.502045-6.0
27McCollum, Patrick M1775USA12N=18B8N10B0.57.08.50.751473-55.6
28Gaffagan, Steven1854USA6NF=25BF0.53.53.50.501657-10.2
29Parsons, Stephen1832USAF15B9N13N0.06.56.50.00967-35.6
30Viadiu-Ilarraza, Hector1831USA9N10BFF0.05.05.00.001020-20.6
31Sankar, Arjun1835USA2BFFF0.03.53.50.001104-8.0
32Horowitz, Phineas F1814USAFFF14B0.03.53.50.001168-5.8
33Ni, Leo1727USA15NFFF0.02.02.00.00926-20.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets