CChessStats

23rd ASEAN AGE GROUP CHESS CHAMPIONSHIP 2025 (U12 GIRLS)

Open SwissStandard

25 players participated in this 9-round tournament, held from 01 Jul 2025 to 11 Jul 2025 in George Town, Penang, Malaysia. 1 titled players from 7 federations. Top 10 Elo average was 1639, and top seed was En Rui Audelle Sim (🇸🇬 SGP, 1694).

Li Ya Leah Tan (🇸🇬 SGP, WCM, 1647) won with 8.5/9, ahead of Nguyen Dinh Tam Anh (6.5) and En Rui Audelle Sim (6.5). Tan won solo starting round 4.

The biggest upset came in round 4: Ngoc Thao Nguyen Nguyen (1464) beat En Rui Audelle Sim (1694), a +230-point gap.

Location
🇲🇾George Town, Penang, Malaysia
Dates
01 Jul 2025 → 11 Jul 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 9 rounds
Top seed
🇸🇬En Rui Audelle Sim1694
Avg top 10
1,639
Participants
25
Titled players · 1
WCM×1
Federations · 7 represented
🇲🇾Malaysia×8
🇻🇳Vietnam×7
🇸🇬Singapore×3
🇵🇭Philippines×3
🇹🇭Thailand×2
🇲🇲Myanmar×1
🇦🇺Australia×1
Top 3

How it unfolded

Top 6 · 9 rounds

WCM Li Ya Leah Tan led from R4; +2.0-point edge over the runner-up.

Co-leaders
12
4
2
1
1
1
1
1
1
2.54.579R1R2R3R4R5R6R7R8R9
Tan8.5Anh6.5Sim6.5Tan6Nga6Phan5.5
R4–R9 · LEAD HELD

WCM Li Ya Leah Tan never relinquished the lead after R4; final gap +2.0 over the runner-up.

R4 · HEAD-TO-HEAD · WINNER VS 2ND

WCM Li Ya Leah Tan beat Nguyen Dinh Tam Anh (Black).

WIN STREAKS · 3 top finishers

WCM Li Ya Leah Tan 7 wins (R1–R7)Nguyen Dinh Tam Anh 3+3 wins (R1–R3, R5–R7)En Rui Audelle Sim 3 wins (R5–R7)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1WCMLi Ya Leah Tan*
1
1
—
2Nguyen Dinh Tam Anh
0
*
½
0
3En Rui Audelle Sim
0
½
*—
4Jingying Sonia Tan—
1
—*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7R8R9PtsBu C1BuSBPerfΔ
1Tan, Li Ya LeahWCM1647SGP+24N+9B+3B+2N+6N+4B+11N=15B+10N8.542.044.042.002058+132.0
2Nguyen Dinh Tam Anh1689VIE+19B+10N+11B−1B+9N+6B+13N=3N−5B6.544.548.030.251726+17.1
3Sim, En Rui Audelle1694SGP+17N+8B−1N−9B+12N+10B+4N=2B+15N6.543.547.030.751729+14.4
4Duong Ngoc Nga1687VIE−9N+12B+5N+20B+11N−1N−3B+6B+13N6.044.547.528.001624-25.2
5Tan, Jingying Sonia1535SGP−16B+21N−4B+25N=20B=14N+7N+9B+2N6.036.537.023.251788+79.6
6Phan, Ngoc Bao Chau1617VIE+21B=16N+13B+15N−1B−2N+10B−4N+12B5.542.545.522.501644+10.4
7Tran, Duong Hoang Ngan1667VIE+23B−11N+17B=10N=13B−9N−5B+16N+22N5.034.036.517.001451-80.8
8Thai, Ngoc Phuong Minh1546VIE+22B−3N+25B−11N+17B−13N−12B+21N+18B5.032.533.013.001455-26.0
9Nguyen, Ngoc Thao Nguyen1464VIE+4B−1N+14B+3N−2B+7B−15N−5N=16B4.547.051.024.001651+76.0
10Wang, Chloe1554AUS+20N−2B+12N=7B+15B−3N−6N+19B−1B4.544.047.017.501530-10.4
11Pham Ngoc Tung Lan1539VIE+18N+7B−2N+8B−4B+16N−1B=12N−17B4.543.046.519.751493-14.8
12May Mahar0MYA+14B−4N−10B+16N−3B+20N+8N=11B−6N4.540.543.518.7515130.0
13Subia, Millery Gen1530PHI+25N=15B−6N+18B=7N+8B−2B=14N−4B4.540.040.515.751543+2.0
14Tan, Mary Janelle1643PHI−12N+24B−9N=22B+18N=5B=19N=13B=20B4.532.034.015.251413-50.4
15Clar, Thea Grace1644PHIF=13N+16B−6B−10N+21N+9B=1N−3B4.041.041.018.001508-51.2
16Rosnizam, Izz Zara Aisyah0MAS+5N=6B−15N−12B+22N−11B+20N−7B=9N4.037.039.516.5014530.0
17Mohd Khafzan, An Nur Alisha1467MAS−3B+22N−7N+24B−8N−19BF=18B+11N3.532.532.510.751344-29.6
18Rosnaidi, Rania0MAS−11B=23N+19B−13N−14B=25N+24B=17N−8N3.530.030.58.7513590.0
19Tourteau, Victoria1467THA−2N−20B−18NF+23B+17N=14B−10N+25N3.528.528.58.751555+22.4
20Mohd Faizal, Hannan Nur Hasya0MAS−10B+19N+23B−4N=5N−12B−16BF=14N3.035.535.511.2515520.0
21Mohan, Sanvinaa0MAS−6N−5B=24N+23N+25B−15B=22N−8BF3.028.028.05.251313-20.4
22Rosli, Ain Safiya0MAS−8N−17BF=14N−16B+24N=21B=23N−7B2.529.529.57.0013320.0
23Ho, Xing Ern Megan1418MAS−7N=18B−20N−21B−19NF+25B=22B=24N2.523.023.04.50712-46.0
24Kamolchotiros, Ava Yeap0THA−1B−14N=21B−17NF−22B−18N+25B=23B2.028.528.53.2512720.0
25Wong, Kangning0MAS−13BF−8N−5B−21N=18B−23N−24N−19B0.530.030.01.756840.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets