2025 Father's Day Open - Kenobi U1800
25 players participated in this 5-round tournament, held from 14 Jun 2025 to 15 Jun 2025 in Bellevue, WA, United States. 4 federations represented. Top 10 Elo average was 1427, and top seed was Evan Cen (🇺🇸 USA, 1690).
Hetamsaria Aadi (🇺🇸 USA, 0) won with 4.5/5, ahead of Kenneth Yuodelis (4.5) and Jinmo Nam (4.0). Aadi shared the lead from round 3, winning on tie-break.
The biggest upset came in round 4: N Naaditha Suhas Ka Wijayarathna (1498) beat Andy Chen (1646), a +148-point gap.
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How it unfolded
Top 6 · 5 roundsTight race until R5; 2 players tied at 4.5/5, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 2 at the finish.
2 players finish on 4.5/5. Aadi takes the title on Buchholz Cut1 (14.5).
Hetamsaria Aadi drew with Kenneth Yuodelis (Black).
Hetamsaria Aadi 4 wins (R1–R4)Kenneth Yuodelis 4 wins (R1–R4)Evan Takayoshi 4 wins (R2–R5)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Hetamsaria Aadi | * | ½ | — | 1 |
| 2Kenneth Yuodelis | ½ | * | — | — |
| 3Evan Takayoshi | — | — | * | — |
| 4Jinmo Nam | 0 | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Hetamsaria Aadi | 0 | USA | +5N | +?B | +6N | +3B | =2N | 4.5 | 14.5 | 14.5 | 12.25 | 1638 | 0.0 |
| 2 | Yuodelis, Kenneth | 0 | USA | +16N | +17B | +7N | +12B | =1B | 4.5 | 11.0 | 12.5 | 10.25 | 1643 | 0.0 |
| 3 | Nam, Jinmo | 0 | USA | +9B | +?N | +8B | −1N | +7B | 4.0 | 13.0 | 13.0 | 8.50 | 1636 | 0.0 |
| 4 | Takayoshi, Evan | 0 | USA | −13B | +14N | +19N | +11B | +5N | 4.0 | 9.5 | 11.0 | 9.00 | 1620 | 0.0 |
| 5 | Wijayarathna, N Naaditha Suhas Ka | 1498 | SRI | −1B | +20N | +22B | +8N | −4B | 3.0 | 12.5 | 13.5 | 5.00 | 2446 | +28.0 |
| 6 | Cen, Evan | 1690 | USA | +14B | +13N | −1B | =9N | =10N | 3.0 | 11.5 | 13.5 | 6.50 | 1604 | -4.8 |
| 7 | Maharaja, Imai Subramonia | 1563 | USA | +20B | +24N | −2B | +13N | −3N | 3.0 | 11.5 | 12.0 | 3.50 | 2241 | +13.2 |
| 8 | Chen, Andy | 1646 | USA | +18N | +15B | −3N | −5B | +21N | 3.0 | 10.5 | 11.5 | 4.50 | 698 | -28.0 |
| 9 | Hetamsaria, Aayan | 0 | FID | −3N | +21B | +15N | =6B | −12N | 2.5 | 11.0 | 12.0 | 4.50 | 1473 | 0.0 |
| 10 | He, Oliver Lang | 1604 | USA | −17N | +16B | +18N | F | =6B | 2.5 | 7.5 | 7.5 | 4.50 | 1690 | +4.8 |
| 11 | Das, Sambuddha Sekhar | 1679 | USA | F | +25N | =12B | −4N | +22B | 2.5 | 7.0 | 7.0 | 2.00 | 1642 | -2.0 |
| 12 | Raja, Rian | 1642 | USA | F | =19B | =11N | −2N | +9B | 2.0 | 11.0 | 11.0 | 4.50 | 1591 | -5.6 |
| 13 | Evin, Terrick | 0 | USA | +4N | −6B | +?N | −7B | F | 2.0 | 10.0 | 10.0 | 4.00 | 1475 | 0.0 |
| 14 | Ghosh, Snehil | 0 | USA | −6N | −4B | +?B | −21N | +24B | 2.0 | 8.5 | 8.5 | 0.50 | 1566 | 0.0 |
| 15 | Kim, Logan Gawon | 0 | KOR | +?B | −8N | −9B | +18B | −?N | 2.0 | 7.0 | 7.0 | 1.50 | 796 | 0.0 |
| 16 | Ao, Ethan | 0 | USA | −2B | −10N | =20B | =24N | =17B | 1.5 | 9.5 | 10.0 | 1.50 | 1330 | 0.0 |
| 17 | Roy Chowdhury, Avyaan | 0 | USA | +10B | −2N | −?B | −22N | =16N | 1.5 | 9.5 | 9.5 | 3.25 | 1562 | 0.0 |
| 18 | FIDE 39984559 | 0 | — | −8B | +?N | −10B | −15N | =20N | 1.5 | 8.5 | 8.5 | 0.50 | 825 | 0.0 |
| 19 | Chang, Allen | 1502 | USA | +23B | =12N | −4B | F | F | 1.5 | 7.0 | 7.0 | 2.00 | 1642 | +7.6 |
| 20 | Wang, Harvey | 0 | USA | −7N | −5B | =16N | F | =18B | 1.0 | 9.0 | 9.0 | 1.50 | 731 | 0.0 |
| 21 | Ma, Ziliang | 0 | USA | −?N | −9N | F | +14B | −8B | 1.0 | 7.5 | 7.5 | 2.00 | 796 | 0.0 |
| 22 | Chaudhuri, Arihant | 0 | USA | −?B | F | −5N | +17B | −11N | 1.0 | 7.0 | 7.0 | 1.50 | 766 | 0.0 |
| 23 | Li, Anyi | 0 | USA | −19N | F | +24B | −?B | −?N | 1.0 | 2.0 | 2.0 | 0.50 | 1371 | 0.0 |
| 24 | Byelashova, Darya | 1442 | USA | F | −7B | −23N | =16B | −14N | 0.5 | 7.5 | 7.5 | 0.75 | 763 | -13.2 |
| 25 | FIDE 39919544 | 0 | — | F | −11B | F | F | F | 0.0 | 2.5 | 2.5 | 0.00 | 879 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Wijayarathna, N Naaditha Suhas KaSRI+28.03.0 pts · #8
- 2Maharaja, Imai SubramoniaUSA+13.23.0 pts · #5
- 3Chang, AllenUSA+7.61.5 pts · #14
- 1Chen, AndyUSA-28.03.0 pts · #25
- 2Byelashova, DaryaUSA-13.20.5 pts · #20
- 3Raja, RianUSA-5.62.0 pts · #9
- R4+148 Elo gap