21st Thailand Junior Chess Championship 2026 - U14
Open SwissStandard
31 players participated in this 9-round tournament, held from 10 Apr 2026 to 14 Apr 2026 in Nonthaburi, Thailand. Top 10 Elo average was 1583, and top seed was Gavin Siridanupath (🇹🇭 THA, 1876).
Waratorn Jitjuajun (🇹🇭 THA, 1567) won with 8.5/9, ahead of Gavin Siridanupath (7.5) and Prempipath Punyanitya (6.5). Jitjuajun took the lead from round 5.
The biggest upset came in round 5: Waratorn Jitjuajun (1567) beat Gavin Siridanupath (1876), a +309-point gap.
Location
🇹🇭Nonthaburi, Thailand
Dates
10 Apr 2026 → 14 Apr 2026
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 9 rounds
Federations · 1 represented
🇹🇭Thailand×22
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 9 roundsWaratorn Jitjuajun led from R5; +1.0-point edge over the runner-up.
Co-leaders
14
7
2
1
1
1
1
1
1
R5 · LEADER CHANGE12 Apr
Waratorn Jitjuajun takes the sole lead (4.5/5).
R5 · HEAD-TO-HEAD · WINNER VS 2ND
Waratorn Jitjuajun beat Gavin Siridanupath (White).
WIN STREAKS · 2 top finishers
Waratorn Jitjuajun 6 wins (R4–R9)Gavin Siridanupath 4 wins (R1–R4)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Waratorn Jitjuajun | * | 1 | 1 | — |
| 2Gavin Siridanupath | 0 | * | 1 | — |
| 3Prempipath Punyanitya | 0 | 0 | * | — |
| 4Pontakorn Laohakulvathit | — | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Jitjuajun, Waratorn | 1567 | THA | +31B | +26N | =9B | +6N | +2B | +10N | +3B | +11B | +7N | 8.5 | 43.0 | 43.0 | 40.50 | 1949 | +90.4 |
| 2 | Siridanupath, Gavin | 1876 | THA | +28N | +10B | +3N | +7B | −1N | +9B | =11N | +4B | +12N | 7.5 | 46.5 | 48.5 | 37.50 | 1748 | -26.6 |
| 3 | Punyanitya, Prempipath | 1498 | THA | +25B | +18N | −2B | =12N | +6B | +24N | −1N | +10B | +9N | 6.5 | 44.0 | 47.0 | 28.50 | 1583 | +14.4 |
| 4 | Pa-in, Thunpisit | 1574 | THA | −17N | −13B | +29N | +27B | +22N | +25B | +9N | −2N | +16B | 6.0 | 35.5 | 37.0 | 20.50 | 1482 | -16.8 |
| 5 | Laohakulvathit, Pontakorn | 1551 | THA | −12N | =23B | +28N | −24B | +21N | +17B | =16N | +13B | +10N | 6.0 | 34.5 | 36.5 | 24.00 | 2267 | +30.4 |
| 6 | Rujiravanich, Pacific | 0 | THA | =13N | +21B | +12N | −1B | −3N | =8N | =15B | +19N | +22B | 5.5 | 43.0 | 47.0 | 24.50 | 1393 | 0.0 |
| 7 | Parnumats, Jetsadakorn | 1534 | THA | +27B | +17N | +15B | −2N | =9B | −11N | +24B | +14N | −1B | 5.5 | 43.0 | 46.0 | 22.50 | 1416 | -34.8 |
| 8 | Najai, Theeraphat | 1711 | THA | +19B | −15N | −13N | −22B | +28N | =6B | +17N | +24B | +11N | 5.5 | 35.5 | 37.5 | 21.25 | 1351 | -54.8 |
| 9 | Kesareeporn, Parinpat | 1448 | THA | +14N | +24B | =1N | +13B | =7N | −2N | −4B | +15N | −3B | 5.0 | 48.5 | 52.0 | 25.00 | 1515 | +20.0 |
| 10 | Sivaraksa, Sanhawat | 1437 | THA | +16B | −2N | +25B | +18N | +14B | −1B | +13N | −3N | −5B | 5.0 | 46.5 | 49.5 | 21.00 | 1350 | -23.2 |
| 11 | Patanasakdikul, Thanapipat | 1497 | THA | +23N | −12B | =24N | +26B | +17N | +7B | =2B | −1N | −8B | 5.0 | 43.5 | 46.5 | 22.00 | 1586 | +13.2 |
| 12 | Kunkhongkaphan, Krittaphat | 0 | THA | +5B | +11N | −6B | =3B | −24N | +19N | +20B | =16N | −2B | 5.0 | 42.5 | 46.0 | 24.25 | 1619 | 0.0 |
| 13 | Sohinkong, Chayodom | 1496 | THA | =6B | +4N | +8B | −9N | =16B | +14N | −10B | −5N | +20B | 5.0 | 42.0 | 46.0 | 25.25 | 1532 | +11.2 |
| 14 | Sukcharoenyingyong, Kunatch | 0 | THA | −9B | +20N | +26B | +15N | −10N | −13B | +25N | −7B | +23N | 5.0 | 36.0 | 39.0 | 18.50 | 1345 | 0.0 |
| 15 | Noparatvarakorn, Peewatin | 1435 | THA | +29N | +8B | −7N | −14B | +18N | −16B | =6N | −9B | +21N | 4.5 | 38.5 | 40.0 | 17.75 | 1439 | -0.8 |
| 16 | Tangtiyapun, Kritsanut | 0 | THA | −10N | F | +19B | =17B | =13N | +15N | =5B | =12B | −4N | 4.0 | 39.5 | 39.5 | 18.50 | 1427 | 0.0 |
| 17 | Kanjanataweerote, Pasit | 0 | THA | +4B | −7B | +30N | =16N | −11B | −5N | −8B | +31N | =19B | 4.0 | 37.5 | 37.5 | 11.50 | 1333 | 0.0 |
| 18 | FIDE 6231926 | 0 | — | +21N | −3B | +22N | −10B | −15B | +26N | −19B | −20N | +29B | 4.0 | 35.0 | 36.5 | 12.50 | 660 | 0.0 |
| 19 | FIDE 6232469 | 0 | — | −8N | +29B | −16N | =21B | +27N | −12B | +18N | −6B | =17N | 4.0 | 35.0 | 36.5 | 12.50 | 910 | 0.0 |
| 20 | Suharuithaya, Virit | 1523 | THA | −24N | −14B | +23N | +30B | −25N | +22B | −12N | +18B | −13N | 4.0 | 33.5 | 35.0 | 13.50 | 696 | -18.8 |
| 21 | Chaimongkol, Thanakorn | 0 | THA | −18B | −6N | +31B | =19N | −5B | =23N | +28B | +27N | −15B | 4.0 | 33.0 | 33.0 | 9.00 | 693 | 0.0 |
| 22 | Geuvens, Kenzo | 0 | THA | F | +27N | −18B | +8N | −4B | −20N | +29B | +25B | −6N | 4.0 | 32.5 | 32.5 | 13.00 | 1460 | 0.0 |
| 23 | Prompipat, Shinnapat | 0 | THA | −11B | =5N | −20B | −25N | +30N | =21B | +26B | +28N | −14B | 4.0 | 32.0 | 33.5 | 11.50 | 1233 | 0.0 |
| 24 | Ngernklan, Wannakorn | 0 | THA | +20B | −9N | =11B | +5N | +12B | −3B | −7N | −8N | −27B | 3.5 | 42.5 | 45.5 | 17.50 | 1428 | 0.0 |
| 25 | FIDE 6232485 | 0 | — | −3N | +28B | −10N | +23B | +20B | −4N | −14B | −22N | F | 3.0 | 36.5 | 36.5 | 10.00 | 1302 | 0.0 |
| 26 | FIDE 6220746 | 0 | — | +30N | −1B | −14N | −11N | +29B | −18B | −23N | F | +31B | 3.0 | 29.5 | 29.5 | 3.00 | 734 | 0.0 |
| 27 | FIDE 6226132 | 0 | — | −7N | −22B | F | −4N | −19B | +30B | +31N | −21B | +24N | 3.0 | 28.5 | 28.5 | 5.00 | 754 | 0.0 |
| 28 | FIDE 6231128 | 0 | — | −2B | −25N | −5B | +31N | −8B | F | −21N | −23B | +30N | 2.0 | 31.5 | 31.5 | 1.50 | 913 | 0.0 |
| 29 | FIDE 6229565 | 0 | — | −15B | −19N | −4B | F | −26N | +31B | −22N | =30B | −18N | 1.5 | 27.0 | 27.0 | 0.75 | 705 | 0.0 |
| 30 | FIDE 6232019 | 0 | — | −26B | +31N | −17B | −20N | −23B | −27N | F | =29N | −28B | 1.5 | 21.5 | 21.5 | 0.75 | 671 | 0.0 |
| 31 | FIDE 6232493 | 0 | — | −1N | −30B | −21N | −28B | F | −29N | −27B | −17B | −26N | 0.0 | 27.5 | 27.5 | 0.00 | 770 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Jitjuajun, WaratornTHA+90.48.5 pts · #2
- 2Laohakulvathit, PontakornTHA+30.46.0 pts · #8
- 3Kesareeporn, ParinpatTHA+20.05.0 pts · #4
Top rating losers
- 1Najai, TheeraphatTHA-54.85.5 pts · #16
- 2Parnumats, JetsadakornTHA-34.85.5 pts · #11
- 3Siridanupath, GavinTHA-26.67.5 pts · #1
Biggest upsets
- R5+309 Elo gap
- R2+276 Elo gap
- R3+215 Elo gap