49th Thailand Chess Championship 2026 - Women
Open SwissStandard
29 players participated in this 9-round tournament, held from 15 Apr 2026 to 19 Apr 2026 in Nonthaburi, Thailand. 1 titled players. Top 10 Elo average was 1666, and top seed was Sarocha Chuemsakul (🇹🇭 THA, WFM, 1969).
Sarocha Chuemsakul (🇹🇭 THA, WFM, 1969) won with 8.0/9, ahead of Sirin Bootsumran (6.5) and Proudpitcha Suthiponpaisarn (6.0). Chuemsakul took the lead from round 5.
The biggest upset came in round 1: Nitcha Thamthinawut (1438) beat Pabhawarin Wanudomdechachai (1751), a +313-point gap.
Location
🇹🇭Nonthaburi, Thailand
Dates
15 Apr 2026 → 19 Apr 2026
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 9 rounds
Titled players · 1
WFM×1
Federations · 1 represented
🇹🇭Thailand×24
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 9 roundsWFM Sarocha Chuemsakul led from R5; +1.5-point edge over the runner-up.
Co-leaders
12
5
2
1
1
1
1
1
1
Chuemsakul8Bootsumran6.5Suthiponpaisarn6Yensudchai6Chinkulkitniwat5.5Kaewwattha5.5— ex-leaders:Siripatvanichled R4, #8
R5 · LEADER CHANGE17 Apr
WFM Sarocha Chuemsakul takes the sole lead (4.5/5).
R7 · HEAD-TO-HEAD · WINNER VS 2ND
WFM Sarocha Chuemsakul drew with Sirin Bootsumran (White).
WIN STREAKS · 2 top finishers
WFM Sarocha Chuemsakul 5 wins (R2–R6)Sirin Bootsumran 3 wins (R1–R3)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1WFMSarocha Chuemsakul | * | ½ | ½ | 1 |
| 2Sirin Bootsumran | ½ | * | 1 | — |
| 3Proudpitcha Suthiponpaisarn | ½ | 0 | * | — |
| 4Lilih Yensudchai | 0 | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Chuemsakul, SarochaWFM | 1969 | THA | =3B | +23N | +7B | +6N | +5B | +12N | =2B | +4N | +11B | 8.0 | 45.0 | 48.5 | 42.25 | 1922 | -4.2 |
| 2 | Bootsumran, Sirin | 1756 | THA | +26N | +10B | +8N | −5B | =11N | +3B | =1N | +7B | =6N | 6.5 | 46.5 | 48.5 | 33.75 | 1794 | +19.6 |
| 3 | Suthiponpaisarn, Proudpitcha | 1473 | THA | =1N | +22B | +15N | =8B | =12B | −2N | +19N | =6B | +5N | 6.0 | 44.0 | 47.5 | 29.00 | 1747 | +100.4 |
| 4 | Yensudchai, Lilih | 1474 | THA | +21N | −8B | =11N | +13B | =19N | +17B | +5N | −1B | +7N | 6.0 | 42.0 | 45.5 | 27.75 | 1725 | +85.6 |
| 5 | Siripatvanich, Nonglak | 1600 | THA | +11N | +24B | +6B | +2N | −1N | =7B | −4B | +9N | −3B | 5.5 | 48.0 | 51.0 | 28.25 | 1644 | +10.0 |
| 6 | Kaewwattha, Natrada | 1672 | THA | +20N | +9B | −5N | −1B | =16N | +18B | +10N | =3N | =2B | 5.5 | 45.5 | 49.0 | 27.00 | 1622 | -9.6 |
| 7 | Darasidh, Bheerada | 1598 | THA | +29N | +17B | −1N | +9B | +10N | =5N | +15B | −2N | −4B | 5.5 | 45.5 | 45.5 | 22.25 | 1588 | +31.2 |
| 8 | Chinkulkitniwat, Purichaya | 1638 | THA | +16B | +4N | −2B | =3N | −15B | +21N | =9B | +12N | =13B | 5.5 | 43.0 | 46.5 | 27.25 | 1656 | +9.6 |
| 9 | Laoaraya, Natchanan | 1486 | THA | +27N | −6N | +16B | −7N | +20B | +11B | =8N | −5B | +15N | 5.5 | 39.5 | 41.5 | 22.25 | 1484 | +5.6 |
| 10 | Chiadthaisong, Kanuengnit | 1501 | THA | +14B | −2N | +20B | +19N | −7B | =15N | −6B | +17N | +16B | 5.5 | 39.0 | 42.5 | 22.75 | 1592 | +16.8 |
| 11 | Kamolchotiros, Ava Yeap | 1419 | THA | −5B | +28N | =4B | +23N | =2B | −9N | +14B | +19B | −1N | 5.0 | 43.5 | 44.5 | 19.25 | 1515 | 0.0 |
| 12 | Junput, Orachaporn | 1513 | THA | +18N | =15B | =13N | +14B | =3N | −1B | =16N | −8B | +22N | 5.0 | 42.5 | 46.0 | 22.50 | 1573 | +12.4 |
| 13 | Wanudomdechachai, Pabhawarin | 1751 | THA | −17B | +29N | =12B | −4N | +24B | −19B | +22N | +18B | =8N | 5.0 | 34.5 | 34.5 | 15.75 | 1478 | -94.0 |
| 14 | Klannurak, Kanyawee | 0 | THA | −10N | +26B | +24N | −12N | −17B | +25B | −11N | +27N | +20B | 5.0 | 31.0 | 33.0 | 13.50 | 1470 | 0.0 |
| 15 | Pamornrattapong, Nutnicha | 0 | THA | +19N | =12N | −3B | +22B | +8N | =10B | −7N | =16B | −9B | 4.5 | 41.0 | 44.5 | 20.00 | 1519 | 0.0 |
| 16 | Luttakunaporn, Pichamon | 1429 | THA | −8N | +21B | −9N | +24B | =6B | +20N | =12B | =15N | −10N | 4.5 | 38.5 | 41.5 | 17.50 | 1478 | +16.4 |
| 17 | Thamthinawut, Nitcha | 1438 | THA | +13N | −7N | −19B | +25B | +14N | −4N | =21B | −10B | =18N | 4.0 | 38.0 | 41.0 | 16.75 | 1320 | -29.2 |
| 18 | Tipmongkol, Kaewkomol | 0 | THA | −12B | −19B | =21N | +26B | +22N | −6N | +23B | −13N | =17B | 4.0 | 33.5 | 35.5 | 12.75 | 1464 | 0.0 |
| 19 | Samphaothong, Siriwan | 1600 | THA | −15B | +18N | +17N | −10B | =4B | +13N | −3B | −11N | F | 3.5 | 40.0 | 43.5 | 16.00 | 1533 | -13.6 |
| 20 | Keongamaroon, Artittaya | 1436 | THA | −6B | +27N | −10N | +28B | −9N | −16B | +25N | =21B | −14N | 3.5 | 34.5 | 35.5 | 7.75 | 715 | -62.8 |
| 21 | Sermthong, Venika | 0 | THA | −4B | −16N | =18B | +27N | +23B | −8B | =17N | =20N | F | 3.5 | 33.0 | 33.0 | 11.25 | 1244 | 0.0 |
| 22 | Botkate, Chanaporn | 1563 | THA | =23B | −3N | +29B | −15N | −18B | +24N | −13B | +28N | −12B | 3.5 | 32.0 | 32.0 | 5.75 | 1365 | -41.6 |
| 23 | FIDE 6230270 | 0 | — | =22N | −1B | +26N | −11B | −21N | +28B | −18N | +29B | F | 3.5 | 30.5 | 30.5 | 4.75 | 1662 | 0.0 |
| 24 | Rojwongsawat, Yatawee | 1480 | THA | +28B | −5N | −14B | −16N | −13N | −22B | F | +26N | +29N | 3.0 | 26.5 | 26.5 | 3.00 | 1315 | -41.2 |
| 25 | FIDE 6214843 | 0 | — | F | F | +27B | −17N | +26B | −14N | −20B | F | +28B | 3.0 | 17.5 | 17.5 | 5.00 | 1316 | 0.0 |
| 26 | Pengsee, Pemika | 1453 | THA | −2B | −14N | −23B | −18N | −25N | F | +29B | −24B | +27N | 2.0 | 27.0 | 27.0 | 2.00 | 817 | -24.4 |
| 27 | FIDE 6232523 | 0 | — | −9B | −20B | −25N | −21B | F | +29N | +28N | −14B | −26B | 2.0 | 23.5 | 23.5 | 1.00 | 648 | 0.0 |
| 28 | FIDE 6231780 | 0 | — | −24N | −11B | F | −20N | +29B | −23N | −27B | −22B | −25N | 1.0 | 23.5 | 23.5 | 0.00 | 692 | 0.0 |
| 29 | FIDE 6231772 | 0 | — | −7B | −13B | −22N | F | −28N | −27B | −26N | −23N | −24B | 0.0 | 25.5 | 25.5 | 0.00 | 745 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Suthiponpaisarn, ProudpitchaTHA+100.46.0 pts · #3
- 2Yensudchai, LilihTHA+85.66.0 pts · #6
- 3Darasidh, BheeradaTHA+31.25.5 pts · #10
Top rating losers
- 1Wanudomdechachai, PabhawarinTHA-94.05.0 pts · #13
- 2Keongamaroon, ArtittayaTHA-62.83.5 pts · #27
- 3Botkate, ChanapornTHA-41.63.5 pts · #24
Biggest upsets
- R1+313 Elo gap
- R4+277 Elo gap
- R8+181 Elo gap