2026 April Irvine FIDE Weekend - Under 1800
Open SwissStandard
13 players participated in this 6-round tournament, held from 11 Apr 2026 to 12 Apr 2026 in Irvine, CA, United States. 3 federations represented. Top 10 Elo average was 644, and top seed was Tony Chen (🇨🇦 CAN, 1727).
Location
🇺🇸Irvine, CA, United States
Dates
11 Apr 2026 → 12 Apr 2026
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 6 rounds
Federations · 3 represented
🇺🇸United States of America×2
🇨🇦Canada×2
🇮🇷Iran×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 6 roundsFIDE 566008832 led from R4; +0.5-point edge over the runner-up.
Co-leaders
6
1
3
1
1
1
R4 · LEADER CHANGE12 Apr
FIDE 566008832 takes the sole lead (3.5/4).
R4 · HEAD-TO-HEAD · WINNER VS 2ND
FIDE 566008832 beat Siavash Raeisi Dehkordi (White).
R1–R6 · UNBEATEN
FIDE 566008832 went unbeaten across 6 games (R1–R6).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1FIDE 566008832 | * | 1 | ½ | — |
| 2Siavash Raeisi Dehkordi | 0 | * | ½ | — |
| 3FIDE 39971554 | ½ | ½ | * | — |
| 4FIDE 39989577 | — | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | FIDE 566008832 | 0 | — | +?B | =4N | +?B | +2B | =3N | +5B | 5.0 | 15.5 | 15.5 | 11.75 | 1646 | 0.0 |
| 2 | Raeisi Dehkordi, Siavash | 1550 | IRI | +9N | =3B | +?B | −1N | +?B | +4N | 4.5 | 15.0 | 15.0 | 8.00 | 1666 | 0.0 |
| 3 | FIDE 39971554 | 0 | — | +10B | =2N | +?B | =4N | =1B | =8N | 4.0 | 17.5 | 17.5 | 9.75 | 1650 | 0.0 |
| 4 | Datta, Gaurav | 1646 | USA | +13B | =1B | =8N | =3B | +12N | −2B | 3.5 | 18.0 | 19.0 | 8.75 | 1727 | +4.4 |
| 5 | FIDE 343096652 | 0 | — | +?B | −?N | +11B | =10N | +6B | −1N | 3.5 | 12.5 | 12.5 | 6.50 | 1517 | 0.0 |
| 6 | FIDE 39989577 | 0 | — | =12B | −?N | +?N | +7B | −5N | +10B | 3.5 | 10.5 | 10.5 | 6.00 | 1537 | 0.0 |
| 7 | FIDE 2655861 | 0 | — | =11B | =12N | =10B | −6N | =?B | +?N | 3.0 | 9.5 | 9.5 | 3.00 | 1517 | 0.0 |
| 8 | Tony Chen | 1727 | CAN | F | =11N | =4B | F | +10N | =3B | 2.5 | 11.5 | 11.5 | 6.75 | 1775 | +4.8 |
| 9 | Checo, Michael | 0 | USA | −2B | −10N | +?B | =11N | −?N | +?B | 2.5 | 8.5 | 8.5 | 1.00 | 717 | 0.0 |
| 10 | Li, Charles Zirui | 1517 | CAN | −3N | +9B | =7N | =5B | −8B | −6N | 2.0 | 16.5 | 19.0 | 5.75 | 927 | -9.2 |
| 11 | FIDE 39936341 | 0 | — | =7N | =8B | −5N | =9B | =?N | −?B | 2.0 | 11.5 | 11.5 | 4.00 | 1727 | 0.0 |
| 12 | FIDE 39994350 | 0 | — | =6N | =7B | F | +?N | −4B | F | 2.0 | 10.0 | 10.0 | 3.25 | 846 | 0.0 |
| 13 | FIDE 566008620 | 0 | — | −4N | +?B | −?N | F | F | F | 1.0 | 3.5 | 3.5 | 0.00 | 846 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Tony ChenCAN+4.82.5 pts · #2
- 2Datta, GauravUSA+4.43.5 pts · #5
- 3FIDE 26558610.03.0 pts · #7
Top rating losers
- 1Li, Charles ZiruiCAN-9.22.0 pts · #11
- 2FIDE 26558610.03.0 pts · #7
- 3FIDE 399363410.02.0 pts · #6