CChessStats

21st Thailand Junior Chess Championship 2026 - U10

Open SwissStandard

26 players participated in this 9-round tournament, held from 10 Apr 2026 to 14 Apr 2026 in Nonthaburi, Thailand. Top 10 Elo average was 1342, and top seed was Banyawat Tuntrairat (🇹🇭 THA, 1576).

Chantat Ruengjirachuporn (🇹🇭 THA, 1446) won with 8.5/9, ahead of Teetat kasemsup (6.5) and Nakorn Nakthip (6.5). Ruengjirachuporn shared the lead from round 4 and won solo starting round 6.

The biggest upset came in round 2: Chantat Ruengjirachuporn (1446) beat Banyawat Tuntrairat (1576), a +130-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
Top seed
🇹🇭Banyawat Tuntrairat1576
Avg top 10
1,342
Participants
26
Federations · 1 represented
🇹🇭Thailand×13
Top 3

How it unfolded

Top 6 · 9 rounds

Chantat Ruengjirachuporn led from R6; +2.0-point edge over the runner-up. Title race converged from 3 co-leaders at R4 to 1 by R6.

Co-leaders
15
5
6
3
2
1
1
1
1
2.54.579R1R2R3R4R5R6R7R8R9
Ruengjirachuporn8.5kasemsup6.5Nakthip6.5chawla6Tuntrairat6Phanthajarunithi6
R6–R9 · LEAD HELD

Chantat Ruengjirachuporn never relinquished the lead after R6; final gap +2.0 over the runner-up.

R3 · HEAD-TO-HEAD · WINNER VS 2ND

Chantat Ruengjirachuporn drew with Teetat kasemsup (White).

WIN STREAKS · 2 top finishers

Chantat Ruengjirachuporn 6 wins (R4–R9)Nakorn Nakthip 3 wins (R3–R5)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Chantat Ruengjirachuporn*
½
1
1
2Teetat kasemsup
½
*
0
½
3Nakorn Nakthip
0
1
*
1
4Phiwathin chawla
0
½
0
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7R8R9PtsBu C1BuSBPerfΔ
1Ruengjirachuporn, Chantat1446THA+16B+5N=2B+8N+11B+3B+6N+4N+7B8.547.051.548.251929+144.4
2kasemsup, Teetat1488THA+20N+23B=1N−3B+7N+9N=4B+5N=6B6.548.051.034.251561+21.2
3Nakthip, Nakorn1530THA+19B=7N+10B+2N+4B−1N−5B+11N+13B6.547.551.534.251497-8.8
4chawla, Phiwathin1492THA+14B+12N=8B+7N−3N+5B=2N−1B+10B6.048.553.532.501499+2.0
5Tuntrairat, Banyawat1576THA+18N−1B+6B+10N+12B−4N+3N−2B+11B6.048.552.531.501423-47.2
6Phanthajarunithi, Napat1508THA+9N=17B−5N+25B+8N+21B−1B+12N=2N6.045.046.026.001415-21.2
7Remigereau, Mathys1443THA+22N=3B+17N−4B−2B+10N+9B+8N−1N5.548.051.026.751339-31.6
8Tourteau, James1470THA+26N+24B=4N−1B−6B+17N+21N−7B+15N5.541.041.518.501153-58.8
9Jairakkla, Rapee0THA−6B+?N+25B+17N=21N−2B−7N+16B+18N5.535.535.515.756880.0
10Euanontat, Alan Mangkornkanok0THA+15N+11B−3N−5B+19N−7B+20N+14B−4N5.042.546.522.507180.0
11Wong, Jinn1471THA+?B−10N+19B+23N−1N+18B+14N−3B−5N5.042.042.016.007230.0
12FIDE 62203040—+13N−4B+24N+18B−5N−14B+19N−6B+?B5.038.538.515.507310.0
13FIDE 62293870—−12B−14N+20N−15B+25N+23B+18N+21B−3N5.035.536.515.507310.0
14Jarasyingdamrong, Athiwat0THA−4N+13B−21N+?B+23B+12N−11B−10N+?B5.032.532.513.006920.0
15FIDE 62218150—−10B−?N=16B+13N−22B+?N+17B+23N−8B4.530.530.514.756700.0
16FIDE 62257130—−1N−21B=15N−20B+26N+25B+?B−9N+22N4.530.530.56.756450.0
17FIDE 62304900—+?B=6N−7B−9B+?N−8B−15N+?N+21B4.530.530.56.5012050.0
18FIDE 62210840—−5B+?N+?B−12N+?B−11N−13B+24N−9B4.029.029.02.507940.0
19FIDE 399334070—−3N+22B−11N+?B−10B+?N−12B−?N+24B4.027.027.05.507310.0
20FIDE 62319930—−2B−?N−13B+16N+?N+22B−10B−?N+26B4.024.524.58.007000.0
21FIDE 62287200—−?B+16N+14B+?N=9B−6N−8B−13N−17N3.536.036.012.256890.0
22Puthidawat, Nakhun0THA−7B−19N−?B+26B+15N−20N−24B+25N−16B3.026.526.56.006560.0
23FIDE 62324340—+?B−2N+?B−11B−14N−13N+26B−15B−?N3.026.526.50.507000.0
24FIDE 62268170—+25B−8N−12B−?N−?N=26B+22N−18B−19N2.523.023.04.256700.0
25FIDE 62263960—−24N+26B−9N−6N−13B−16N−?B−22B−?N1.027.027.00.507080.0
26FIDE 62325070—−8B−25N−?B−22N−16B=24N−23N−?B−20N0.523.523.51.256700.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets