23rd ASEAN AGE GROUP CHESS CHAMPIONSHIP 2025 (U18_U20 Open)
SwissStandard
32 players participated in this 9-round tournament, held from 01 Jul 2025 to 11 Jul 2025 in George Town, Penang, Malaysia. 14 titled players from 8 federations. Top 10 Elo average was 2321, and top seed was Christian Gian Karlo Arca (🇵🇭 PHI, IM, 2410).
Quoc Hy Nguyen (🇻🇳 VIE, IM, 2389) won with 6.5/9, ahead of Dang Anh Minh (6.5) and Fabian Glen Mariano (6.0). Nguyen shared the lead from round 5, winning on tie-break.
The biggest upset came in round 8: Duc Minh Lai (2077) beat Satria Duta Cahaya (IM, 2386), a +309-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
Titled players · 14
IM×5
FM×5
CM×4
Federations · 8 represented
🇻🇳Vietnam×12
🇲🇾Malaysia×8
🇮🇩Indonesia×3
🇵🇭Philippines×3
🇹🇭Thailand×2
🇮🇳India×2
🇨🇳China×1
🇱🇦Laos×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 9 roundsTight race until R9; 2 players tied at 6.5/9, decided on Buchholz.
Co-leaders
12
4
1
1
2
1
2
1
2
R4 · LEADER CHANGE04 Jul
FM Fabian Glen Mariano takes the sole lead (3.5/4).
R9 · TIEBREAK CLUSTER
2 players finish on 6.5/9. Nguyen takes the title on Buchholz Cut1 (43.5).
WIN STREAKS · 2 top finishers
IM Quoc Hy Nguyen 3 wins (R4–R6)IM Mark Jay Bacojo 3 wins (R1–R3)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1FMDang Anh Minh | * | — | 1 | 0 |
| 2IMQuoc Hy Nguyen | — | * | 1 | 1 |
| 3IMMark Jay Bacojo | 0 | 0 | * | 0 |
| 4FMFabian Glen Mariano | 1 | 0 | 1 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Nguyen, Quoc HyIM | 2389 | VIE | =26N | +21B | =8N | +12B | +4N | +3B | =6N | +5N | −7B | 6.5 | 43.5 | 47.0 | 34.25 | 2386 | +2.6 |
| 2 | Dang Anh MinhFM | 2262 | VIE | +27N | =8B | −3N | +18B | =15N | +11B | +4N | =6B | +5B | 6.5 | 42.5 | 46.0 | 32.25 | 2320 | +18.4 |
| 3 | Mariano, Fabian GlenFM | 2399 | INA | +24B | =17N | +2B | +4B | =7N | −1N | =16B | =10N | +6B | 6.0 | 44.0 | 48.0 | 31.75 | 2393 | +0.1 |
| 4 | Bacojo, Mark JayIM | 2332 | PHI | +28B | +20N | +5B | −3N | −1B | +15N | −2B | +18N | +8B | 6.0 | 43.5 | 47.0 | 28.00 | 2270 | -5.6 |
| 5 | Arca, Christian Gian KarloIM | 2410 | PHI | +12N | +10B | −4N | +11B | =6N | +17B | +7N | −1B | −2N | 5.5 | 45.0 | 49.5 | 27.75 | 2325 | -8.6 |
| 6 | Le Tri KienCM | 2236 | VIE | =14B | +23N | +17B | =9N | =5B | +16N | =1B | =2N | −3N | 5.5 | 44.0 | 48.0 | 27.50 | 2328 | +23.8 |
| 7 | Cahaya, Satria DutaIM | 2386 | INA | +22B | +11N | =9B | =16N | =3B | +10N | −5B | −8N | +1N | 5.5 | 43.5 | 47.5 | 28.50 | 2333 | -4.6 |
| 8 | Lai, Duc Minh | 2077 | VIE | +30B | =2N | =1B | −10B | +18N | =9N | +22B | +7B | −4N | 5.5 | 43.5 | 45.5 | 25.25 | 2241 | +39.6 |
| 9 | Tran, Dang Minh QuangFM | 2217 | VIE | +13N | +18B | =7N | =6B | −17N | =8B | =12N | +11B | =19N | 5.5 | 40.5 | 45.0 | 27.50 | 2204 | -1.0 |
| 10 | Vo, Pham Thien Phuc | 2217 | VIE | +15B | −5N | +27B | +8N | =16B | −7B | +17N | =3B | −11N | 5.0 | 41.0 | 44.5 | 23.25 | 2244 | +7.2 |
| 11 | Bodemar, JonathanCM | 2150 | THA | +31B | −7B | +13N | −5N | +27B | −2N | +15B | −9N | +10B | 5.0 | 41.0 | 43.0 | 20.00 | 2160 | +4.4 |
| 12 | Tran Vo Quoc Bao | 2077 | VIE | −5B | +31N | +20B | −1N | +14B | =19N | =9B | =16N | =15B | 5.0 | 40.5 | 42.5 | 21.00 | 2155 | +17.6 |
| 13 | An Dinh MinhCM | 1937 | VIE | −9B | +24N | −11B | −22N | +32B | +23N | +19B | =20N | =18B | 5.0 | 36.0 | 36.0 | 17.00 | 2076 | +56.8 |
| 14 | Nguyen, Thanh Liem | 1942 | VIE | =6N | −26B | =19N | +25B | −12N | −28B | +30N | +21B | +23N | 5.0 | 34.5 | 36.5 | 19.50 | 2012 | +39.6 |
| 15 | Hoang, Quoc Khanh | 1920 | VIE | −10N | =19B | +21N | +23N | =2B | −4B | −11N | +29B | =12N | 4.5 | 40.5 | 44.0 | 20.00 | 2127 | +43.8 |
| 16 | Dinh Nho KietIM | 2359 | VIE | =21N | +25B | +26N | =7B | =10N | −6B | =3N | =12B | F | 4.5 | 40.0 | 43.5 | 20.50 | 2210 | -12.7 |
| 17 | Kavin MohanFM | 2154 | MAS | +29N | =3B | −6N | +26B | +9B | −5N | −10B | +22N | F | 4.5 | 39.5 | 43.0 | 19.50 | 2221 | +27.7 |
| 18 | Mohan, Hariharan | 1912 | MAS | +32B | −9N | +28B | −2N | −8B | +24N | +26B | −4B | =13N | 4.5 | 39.5 | 39.5 | 13.50 | 2072 | +57.6 |
| 19 | Shahar, Uzair | 2185 | MAS | −20B | =15N | =14B | +31N | =22B | =12B | −13N | +24N | =9B | 4.5 | 37.5 | 39.5 | 18.00 | 1991 | -84.8 |
| 20 | Yeoh, Yuan Hui | 1905 | MAS | +19N | −4B | −12N | =28N | =23B | =21B | +25N | =13B | =22N | 4.5 | 37.0 | 40.5 | 19.00 | 2021 | +26.4 |
| 21 | Loo, Pin Xie | 1999 | MAS | =16B | −1N | −15B | =24N | +30B | =20N | +27B | −14N | +26B | 4.5 | 36.0 | 38.0 | 15.50 | 2023 | +4.2 |
| 22 | Nguyen, Nam KietCM | 2059 | VIE | −7N | −29B | +30N | +13B | =19N | +26B | −8N | −17B | =20B | 4.0 | 36.5 | 38.5 | 15.00 | 1978 | -35.6 |
| 23 | Kavin Vijayakumar | 2102 | IND | =25N | −6B | +29N | −15B | =20N | −13B | +28N | +27N | −14B | 4.0 | 35.5 | 39.0 | 14.75 | 1890 | -94.4 |
| 24 | Kristopher, ReynardFM | 2076 | INA | −3N | −13B | =25N | =21B | +29N | −18B | +32N | −19B | +30B | 4.0 | 34.0 | 34.0 | 9.75 | 1864 | -86.0 |
| 25 | Zhang, Xujia | 1545 | CHN | =23B | −16N | =24B | −14N | +31B | =27N | −20B | +30N | =29B | 4.0 | 31.0 | 33.0 | 11.50 | 1805 | +98.4 |
| 26 | Tabernilla, Tyrhone James | 2061 | PHI | =1B | +14N | −16B | −17N | +28B | −22N | −18N | +32B | −21N | 3.5 | 37.0 | 37.0 | 11.75 | 1958 | -48.8 |
| 27 | Aadhya V | 1958 | IND | −2B | +32N | −10N | +29B | −11N | =25B | −21N | −23B | +31B | 3.5 | 34.5 | 34.5 | 7.50 | 1831 | -49.6 |
| 28 | Navaratnam, Ishaan Quan Tze | 1976 | MAS | −4N | +30B | −18N | =20B | −26N | +14N | −23B | −31N | +32B | 3.5 | 31.5 | 31.5 | 9.25 | 1796 | -73.6 |
| 29 | Wee, Yin Lin | 1827 | MAS | −17B | +22N | −23B | −27N | −24B | +32N | +31B | −15N | =25N | 3.5 | 30.5 | 30.5 | 8.00 | 1794 | -18.0 |
| 30 | Eswaran, Tarendra Vinayagar | 1517 | MAS | −8N | −28N | −22B | +32B | −21N | +31N | −14B | −25B | −24N | 2.0 | 32.5 | 32.5 | 2.00 | 1512 | -8.8 |
| 31 | Saisud, Krit | 1670 | THA | −11N | −12B | +32N | −19B | −25N | −30B | −29N | +28B | −27N | 2.0 | 31.0 | 31.0 | 3.50 | 1555 | -48.4 |
| 32 | Maglacion, Herald Wayne Fresco | 0 | LAO | −18N | −27B | −31B | −30N | −13N | −29B | −24B | −26N | −28N | 0.0 | 29.5 | 31.5 | 0.00 | 1080 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Zhang, XujiaCHN+98.44.0 pts · #20
- 2Mohan, HariharanMAS+57.64.5 pts · #24
- 3An Dinh MinhCMVIE+56.85.0 pts · #23
Top rating losers
- 1Kavin VijayakumarIND-94.44.0 pts · #22
- 2Kristopher, ReynardFMINA-86.04.0 pts · #25
- 3Shahar, UzairMAS-84.84.5 pts · #16
Biggest upsets
- R8+309 Elo gap
- R8+306 Elo gap
- R1+280 Elo gap