2025 CalChess State Open & Class FIDE Championship - CDE
Open SwissStandard
41 players participated in this 7-round tournament, held from 29 Aug 2025 to 01 Sept 2025 in Cupertino, CA, United States. 4 federations represented. Top 10 Elo average was 1401, and top seed was Avinesh Nadan (🇫🇯 FIJ, 1666).
Avinesh Nadan (🇫🇯 FIJ, 1666) won with 6.0/7, ahead of Ghosh Harshit (6.0) and Ash Bowen Liang (6.0). Nadan shared the lead from round 5, winning on tie-break.
The biggest upset came in round 6: Ghosh Harshit (1410) beat Keller Ma (1651), a +241-point gap.
Location
🇺🇸Cupertino, CA, United States
Dates
29 Aug 2025 → 01 Sept 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 7 rounds
Federations · 4 represented
🇺🇸United States of America×22
🇹🇼Chinese Taipei×1
🇮🇳India×1
🇫🇯Fiji×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 7 roundsTight race until R7; 3 players tied at 6.0/7, decided on Buchholz.
Co-leaders
25
12
4
1
3
4
3
R7 · TIEBREAK CLUSTER
3 players finish on 6.0/7. Nadan takes the title on Buchholz Cut1 (27.0).
WIN STREAKS · 2 top finishers
Ghosh Harshit 5 wins (R3–R7)Avinesh Nadan 3 wins (R1–R3)
R4 · FORMER LEADER FALL
Jessica Zhang held the sole lead at R4 but finished #38.
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Ghosh Harshit | * | — | — | 0 |
| 2Avinesh Nadan | — | * | ½ | 1 |
| 3Ash Bowen Liang | — | ½ | * | — |
| 4Andrew Yu | 1 | 0 | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Nadan, Avinesh | 1666 | FIJ | +7N | +15B | +5N | =14B | +9N | =3B | +30N | 6.0 | 27.0 | 29.0 | 24.25 | 1843 | +12.4 |
| 2 | Ghosh Harshit | 1410 | IND | +8N | −5B | +7N | +12B | +37N | +14B | +31N | 6.0 | 23.5 | 24.5 | 19.50 | 2392 | +88.0 |
| 3 | Liang, Ash Bowen | 0 | USA | +?B | +19N | =?B | +10N | +?B | =1N | +?B | 6.0 | 13.0 | 13.0 | 10.00 | 1606 | 0.0 |
| 4 | FIDE 39993256 | 0 | — | =?B | =21N | =19B | =?N | +16B | +37N | +11B | 5.0 | 14.5 | 14.5 | 11.50 | 1575 | 0.0 |
| 5 | Yu, Andrew | 0 | USA | +?B | +2N | −1B | +?N | =?B | =?N | +?B | 5.0 | 12.0 | 12.0 | 6.00 | 1538 | 0.0 |
| 6 | FIDE 39965040 | 0 | — | −11N | +?B | =?N | =?B | +?N | +?B | +14N | 5.0 | 7.5 | 7.5 | 3.50 | 1671 | 0.0 |
| 7 | Shao, Raymond | 1563 | USA | −1B | +38N | −2B | +24N | +35B | =40N | +36B | 4.5 | 19.0 | 19.5 | 7.25 | 1385 | -29.6 |
| 8 | FIDE 39993426 | 0 | — | −2B | +27N | =?B | +23N | +10B | =?N | =?B | 4.5 | 15.5 | 15.5 | 9.50 | 610 | 0.0 |
| 9 | FIDE 39993345 | 0 | — | +?B | +?N | =?B | +?N | −1B | +?N | −?B | 4.5 | 6.0 | 6.0 | 0.00 | 866 | 0.0 |
| 10 | Venkatesh, Advit | 0 | USA | =12N | +20B | +?N | −3B | −8N | =15B | +21N | 4.0 | 24.0 | 24.0 | 9.75 | 1577 | 0.0 |
| 11 | FIDE 39993175 | 0 | — | +6B | +?N | −14N | −?B | +17N | +?B | −4N | 4.0 | 17.0 | 17.0 | 8.50 | 851 | 0.0 |
| 12 | FIDE 39992586 | 0 | — | =10B | =?N | +?B | −2N | +?B | +?N | F | 4.0 | 10.0 | 10.0 | 2.00 | 610 | 0.0 |
| 13 | Zhang, Jessica | 0 | USA | +?N | +?B | +18N | +22B | F | −?N | −?B | 4.0 | 6.5 | 6.5 | 6.50 | 705 | 0.0 |
| 14 | Ma, Keller | 1651 | USA | +27B | +41N | +11B | =1N | F | −2N | −6B | 3.5 | 23.5 | 23.5 | 9.50 | 1345 | -31.2 |
| 15 | Anand, Advait | 1489 | USA | +38B | −1N | =28B | =19N | =21B | =10N | =16B | 3.5 | 22.0 | 23.0 | 9.00 | 866 | -10.8 |
| 16 | Li, Hsing | 0 | USA | +?B | +?N | −22N | −?B | −4N | +?B | =15N | 3.5 | 11.5 | 11.5 | 1.75 | 1489 | 0.0 |
| 17 | Raj, Johann | 0 | USA | −28B | +?N | +41B | −?N | −11B | +24N | =35B | 3.5 | 11.0 | 11.0 | 3.75 | 1454 | 0.0 |
| 18 | Narayan, Shlok | 0 | USA | +?B | +?N | −13B | =?N | +39B | −?N | −?N | 3.5 | 4.5 | 4.5 | 0.50 | 1622 | 0.0 |
| 19 | Han, Wilson | 0 | USA | +25N | −3B | =4N | =15B | −?N | −?B | +38N | 3.0 | 18.5 | 18.5 | 8.25 | 1489 | 0.0 |
| 20 | Karpe, Ummon | 1625 | USA | =23B | −10N | =26N | =29B | −32N | +34B | =39B | 3.0 | 16.0 | 16.5 | 6.00 | 1602 | -1.2 |
| 21 | FIDE 39993264 | 0 | — | =?N | =4B | −?N | +?B | =15N | =23N | −10B | 3.0 | 15.5 | 15.5 | 5.75 | 1489 | 0.0 |
| 22 | FIDE 39971058 | 0 | — | +24B | +28N | +16B | −13N | −?B | −?N | −37B | 3.0 | 14.0 | 14.0 | 9.00 | 730 | 0.0 |
| 23 | Patil, Anushka | 0 | USA | =20N | +34B | −?N | −8B | +?N | =21B | −?N | 3.0 | 12.0 | 12.0 | 4.50 | 1625 | 0.0 |
| 24 | Singh, Samar | 0 | USA | −22N | −?B | +?N | −7B | +?N | −17B | +?N | 3.0 | 11.0 | 11.0 | 0.00 | 769 | 0.0 |
| 25 | FIDE 39993540 | 0 | — | −19B | −?N | +27B | F | F | +39N | +?B | 3.0 | 6.0 | 6.0 | 3.00 | 1622 | 0.0 |
| 26 | She, Gloria Beichen | 0 | USA | F | −?N | =20B | =?B | −?N | +?B | +?N | 3.0 | 3.0 | 3.0 | 1.50 | 1625 | 0.0 |
| 27 | Srinivasan, Neev | 0 | USA | −14N | −8B | −25N | +?B | +?N | −?B | =34N | 2.5 | 12.5 | 12.5 | 0.75 | 851 | 0.0 |
| 28 | Elster, Benjamin | 0 | USA | +17N | −22B | =15N | +?B | −?N | −?B | −?N | 2.5 | 10.0 | 10.0 | 5.25 | 1489 | 0.0 |
| 29 | Dharwadkar, Saachi Vikas | 0 | USA | +?B | −?N | −?B | =20N | +34N | −?B | −?N | 2.5 | 4.5 | 4.5 | 3.00 | 1625 | 0.0 |
| 30 | FIDE 39971236 | 0 | — | F | F | F | F | +?B | +?N | −1B | 2.0 | 6.0 | 6.0 | 0.00 | 866 | 0.0 |
| 31 | FIDE 39993493 | 0 | — | F | F | F | F | +?B | +?N | −2B | 2.0 | 6.0 | 6.0 | 0.00 | 610 | 0.0 |
| 32 | FIDE 39993477 | 0 | — | F | F | F | F | +20B | +?N | −?B | 2.0 | 3.0 | 3.0 | 3.00 | 1645 | 0.0 |
| 33 | FIDE 39993370 | 0 | — | F | F | F | F | +?B | −35N | +?B | 2.0 | 1.5 | 1.5 | 0.00 | 654 | 0.0 |
| 34 | FIDE 39990222 | 0 | — | F | −23N | −?B | +41N | −29B | −20N | =27B | 1.5 | 11.0 | 11.0 | 1.25 | 825 | 0.0 |
| 35 | Long, Teresa | 1454 | USA | F | F | F | F | −7N | +33B | =17N | 1.5 | 10.0 | 10.0 | 3.75 | 769 | -13.6 |
| 36 | Chilukuru, Vijay | 0 | USA | F | F | F | F | +?N | =?B | −7N | 1.5 | 4.5 | 4.5 | 0.00 | 769 | 0.0 |
| 37 | Mok, Varick | 1551 | TPE | F | F | F | F | −2B | −4B | +22N | 1.0 | 14.0 | 14.0 | 3.00 | 610 | -27.6 |
| 38 | FIDE 39993582 | 0 | — | −15N | −7B | −?N | F | +?B | −?N | −19B | 1.0 | 11.0 | 11.0 | 0.00 | 729 | 0.0 |
| 39 | Acharya, Aravind | 1602 | USA | F | F | F | F | −18N | −25B | =20N | 0.5 | 9.5 | 9.5 | 1.50 | 1625 | +1.2 |
| 40 | Yang, Vincent | 0 | USA | F | F | F | F | −?N | =7B | −?N | 0.5 | 4.5 | 4.5 | 2.25 | 1569 | 0.0 |
| 41 | FIDE 39993620 | 0 | — | F | −14B | −17N | −34B | −?N | −?N | −?B | 0.0 | 8.5 | 8.5 | 0.00 | 851 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Ghosh HarshitIND+88.06.0 pts · #1
- 2Nadan, AvineshFIJ+12.46.0 pts · #2
- 3Acharya, AravindUSA+1.20.5 pts · #22
Top rating losers
- 1Ma, KellerUSA-31.23.5 pts · #18
- 2Shao, RaymondUSA-29.64.5 pts · #7
- 3Mok, VarickTPE-27.61.0 pts · #40
Biggest upsets
- R6+241 Elo gap
- R3+153 Elo gap
- R5+141 Elo gap