Chess CAD Suphanburi Open 2025
Open SwissStandard
28 players participated in this 9-round tournament, held from 05 Nov 2025 to 09 Nov 2025 in Suphanburi, Thailand. 3 titled players from 7 federations. Top 10 Elo average was 1994, and top seed was Yang Wu (🇨🇳 CHN, 2226).
Apichit Buakird (🇹🇠THA, 2024) won with 7.5/9, ahead of N. Tarun (7.0) and Boris Navrodskiy (6.0). Buakird took the lead from round 6.
The biggest upset came in round 9: N. Tarun (1934) beat Boris Navrodskiy (FM, 2172), a +238-point gap.
Location
🇹ðŸ‡Suphanburi, Thailand
Dates
05 Nov 2025 → 09 Nov 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 9 rounds
Titled players · 3
FM×3
Federations · 7 represented
🇹ðŸ‡Thailand×18
🇮🇳India×3
🇲🇲Myanmar×1
🇷🇺Russia×1
🇩🇰Denmark×1
🇨🇳China×1
🇫🇷France×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 9 roundsApichit Buakird led from R6; +0.5-point edge over the runner-up.
Co-leaders
12
6
2
1
1
1
1
1
1
R5 · LEADER CHANGE07 Nov
Atippat Pornariyasombat takes the sole lead (4.5/5).
R5 · HEAD-TO-HEAD · WINNER VS 2ND
Apichit Buakird beat N. Tarun (White).
WIN STREAKS · 3 top finishers
Apichit Buakird 3 wins (R1–R3)N. Tarun 4 wins (R6–R9)FM Boris Navrodskiy 4 wins (R1–R4)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Apichit Buakird | * | 1 | 0 | 1 |
| 2N. Tarun | 0 | * | 1 | 1 |
| 3FMBoris Navrodskiy | 1 | 0 | * | 0 |
| 4Atippat Pornariyasombat | 0 | 0 | 1 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Buakird, Apichit | 2024 | THA | +25N | +13B | +5N | −3N | +2B | +4B | =18N | +6B | +11N | 7.5 | 43.0 | 46.0 | 38.00 | 2236 | +48.2 |
| 2 | N. Tarun | 1934 | IND | +24N | −5B | +8N | +13B | −1N | +6B | +4N | +7N | +3B | 7.0 | 45.5 | 48.5 | 35.50 | 2148 | +45.4 |
| 3 | Navrodskiy, BorisFM | 2172 | RUS | +8N | +7B | +6N | +1B | −4N | −5B | +11N | +18B | −2N | 6.0 | 46.5 | 50.5 | 32.00 | 2096 | -13.4 |
| 4 | Pornariyasombat, Atippat | 1972 | THA | +19N | +14B | =18N | +12B | +3B | −1N | −2B | =5N | +10B | 6.0 | 43.5 | 47.5 | 28.25 | 2012 | +11.8 |
| 5 | Wu, Yang | 2226 | CHN | +16B | +2N | −1B | +10N | −18B | +3N | +12B | =4B | −6N | 5.5 | 45.0 | 49.0 | 29.00 | 2043 | -34.6 |
| 6 | Ko Ko OhnFM | 2023 | MYA | +17B | +10N | −3B | =11N | +7B | −2N | +26B | −1N | +5B | 5.5 | 44.5 | 47.0 | 24.25 | 1971 | -3.6 |
| 7 | Leclere, Natawan | 1869 | FRA | +27B | −3N | =16B | +20N | −6N | +17B | +13N | −2B | +12N | 5.5 | 39.0 | 40.0 | 19.50 | 1813 | -7.4 |
| 8 | Khoonmee, Yoodthana | 1570 | THA | −3B | +27N | −2B | −14N | +20B | +23N | −10B | +26N | +16B | 5.0 | 35.0 | 36.0 | 14.00 | 1683 | +10.8 |
| 9 | Boonin, Possawee | 0 | THA | −11B | −16N | −15B | +21N | +27B | −14N | +24B | +25N | +20B | 5.0 | 30.5 | 31.5 | 14.00 | 1595 | 0.0 |
| 10 | Suwannaphong, Surasit | 1723 | THA | +23N | −6B | +14N | −5B | +12N | −11B | +8N | =15B | −4N | 4.5 | 40.0 | 43.0 | 19.25 | 1711 | -12.8 |
| 11 | Nielsen, Karsten Eivind | 1856 | DEN | +9N | −18B | +25N | =6B | F | +10N | −3B | +16N | −1B | 4.5 | 39.5 | 39.5 | 19.25 | 1876 | +4.2 |
| 12 | Mongkoltawephun, Chanon | 1616 | THA | =21N | +26B | +20B | −4N | −10B | +15B | −5N | +14N | −7B | 4.5 | 37.5 | 40.0 | 16.75 | 1636 | -3.6 |
| 13 | Suppt-hongs, Paisal | 1789 | THA | +28B | −1N | +17B | −2N | +23B | −22N | −7B | =19N | +26B | 4.5 | 37.0 | 37.0 | 11.50 | 1537 | -37.2 |
| 14 | Settat, Tossaporn | 0 | THA | +22N | −4N | −10B | +8B | −17N | +9B | =20N | −12B | +23N | 4.5 | 36.0 | 39.0 | 18.25 | 1549 | 0.0 |
| 15 | Sripakdee, Padungsak | 1533 | THA | −18N | −23B | +9N | =26B | +25B | −12N | +21B | =10N | =19B | 4.5 | 31.5 | 34.0 | 17.00 | 1621 | +11.4 |
| 16 | Siripatvanich, Nonglak | 1605 | THA | −5N | +9B | =7N | =22B | −26N | +19B | +17N | −11B | −8N | 4.0 | 37.0 | 39.5 | 17.50 | 1644 | +3.2 |
| 17 | Chimyam, Jakkawan | 1474 | THA | −6N | +24B | −13N | +19B | +14B | −7N | −16B | −20N | +28N | 4.0 | 34.5 | 34.5 | 11.50 | 1412 | -11.0 |
| 18 | Wiwatanadate, PoompongFM | 2070 | THA | +15B | +11N | =4B | F | +5N | F | =1B | −3N | F | 4.0 | 34.0 | 34.0 | 21.25 | 2112 | +9.2 |
| 19 | Punbua, Naphapach | 1443 | THA | −4B | −22B | +28N | −17N | +24B | −16N | +23B | =13B | =15N | 4.0 | 32.5 | 32.5 | 10.50 | 1375 | -19.2 |
| 20 | Ankush Bhardwaj | 1547 | IND | F | +21B | −12N | −7B | −8N | +27N | =14B | +17B | −9N | 3.5 | 33.0 | 33.0 | 10.75 | 1534 | -3.6 |
| 21 | Sohinkong, Chayodom | 0 | THA | =12B | −20N | −26N | −9B | +28N | +25B | −15N | −24N | +27B | 3.5 | 27.0 | 27.0 | 6.25 | 1468 | -9.2 |
| 22 | Chongstitwattana, Cholapat | 1666 | THA | −14B | +19N | +23B | =16N | F | +13B | F | F | F | 3.5 | 20.0 | 20.0 | 13.50 | 1881 | +16.6 |
| 23 | Rojwongsawat, Yatawee | 0 | THA | −10B | +15N | −22N | +24B | −13N | −8B | −19N | +28B | −14B | 3.0 | 33.5 | 33.5 | 7.50 | 1344 | 0.0 |
| 24 | Yindeekitkoson, Onwara | 0 | THA | −2B | −17N | +27B | −23N | −19N | +28B | −9N | +21B | −25B | 3.0 | 30.5 | 30.5 | 4.50 | 1331 | 0.0 |
| 25 | Kaveevorayan, Nichakarn | 1501 | THA | −1B | +28N | −11B | F | −15N | −21N | +27B | −9B | +24N | 3.0 | 29.0 | 29.0 | 4.00 | 904 | -48.0 |
| 26 | Rashiv Khajuria | 0 | IND | F | −12N | +21B | =15N | +16B | F | −6N | −8B | −13N | 2.5 | 31.5 | 31.5 | 9.75 | 1561 | 0.0 |
| 27 | FIDE 6214843 | 0 | — | −7N | −8B | −24N | +28B | −9N | −20B | −25N | F | −21N | 1.0 | 28.5 | 28.5 | 0.00 | 802 | 0.0 |
| 28 | FIDE 6229557 | 0 | — | −13N | −25B | −19B | −27N | −21B | −24N | F | −23N | −17B | 0.0 | 26.0 | 26.0 | 0.00 | 743 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Buakird, ApichitTHA+48.27.5 pts · #1
- 2N. TarunIND+45.47.0 pts · #2
- 3Chongstitwattana, CholapatTHA+16.63.5 pts · #17
Top rating losers
- 1Kaveevorayan, NichakarnTHA-48.03.0 pts · #27
- 2Suppt-hongs, PaisalTHA-37.24.5 pts · #21
- 3Wu, YangCHN-34.65.5 pts · #4
Biggest upsets
- R9+238 Elo gap
- R9+203 Elo gap
- R3+202 Elo gap