Viet Nam Youth chess championships 2025 - Standard Open U9
Open SwissStandard
32 players participated in this 9-round tournament, held from 21 Jun 2025 to 25 Jun 2025 in Ninh Binh, Vietnam. Top 10 Elo average was 1646, and top seed was Nguyen Nam Long (🇻🇳 VIE, 1839).
Le Nguyen Phong (🇻🇳 VIE, 1619) won with 7.5/9, ahead of Bui Duc Thien Anh (6.5) and Vuong Tuan Khoa (6.0). Phong shared the lead from round 7 and won solo starting round 8.
The biggest upset came in round 8: Vuong Tuan Khoa (1555) beat Nguyen Nam Long (1839), a +284-point gap.
Location
🇻🇳Ninh Binh, Vietnam
Dates
21 Jun 2025 → 25 Jun 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 9 rounds
Federations · 1 represented
🇻🇳Vietnam×32
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 9 roundsLe Nguyen Phong led from R8; +1.0-point edge over the runner-up. Title race converged from 3 co-leaders at R4 to 1 by R8.
Co-leaders
12
6
1
3
1
1
2
1
1
R8 · LEADER CHANGE24 Jun
Le Nguyen Phong takes the sole lead (6.5/8).
R3 · HEAD-TO-HEAD · WINNER VS 2ND
Le Nguyen Phong drew with Bui Duc Thien Anh (Black).
R6–R9 · WIN STREAK
Le Nguyen Phong won 4 in a row (R6–R9).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Le Nguyen Phong | * | ½ | 1 | — |
| 2Bui Duc Thien Anh | ½ | * | ½ | ½ |
| 3Phan Dang Anh Hao | 0 | ½ | * | — |
| 4Vuong Tuan Khoa | — | ½ | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Le Nguyen Phong | 1619 | VIE | +31N | +21B | =2N | +13B | −5B | +6N | +4B | +8N | +7B | 7.5 | 43.0 | 45.5 | 36.75 | 1859 | +82.8 |
| 2 | Bui Duc Thien Anh | 1691 | VIE | +29B | +9N | =1B | =5N | =6B | =4N | +14B | +13N | =3B | 6.5 | 45.0 | 47.5 | 32.25 | 1763 | +31.5 |
| 3 | Vuong Tuan Khoa | 1555 | VIE | =10B | +25N | −14B | +23N | +16B | =9N | =13B | +5N | =2N | 6.0 | 40.0 | 43.5 | 28.00 | 1631 | +18.8 |
| 4 | Phan Dang Anh Hao | 1627 | VIE | +30B | +18N | =13B | −14N | +29B | =2B | −1N | +15N | +5B | 6.0 | 40.0 | 42.5 | 25.00 | 1641 | +5.6 |
| 5 | Nguyen Nam Long | 1839 | VIE | +26N | +12B | +17N | =2B | +1N | +7B | −8N | −3B | −4N | 5.5 | 46.5 | 50.0 | 29.25 | 1654 | -72.4 |
| 6 | Mai Duy Hung | 1634 | VIE | +11N | −17B | +19N | +15B | =2N | −1B | =7N | +14B | =12N | 5.5 | 43.5 | 48.0 | 27.50 | 1589 | -16.8 |
| 7 | Nguyen Thanh San | 1451 | VIE | −8N | +27B | +12N | +17B | +14B | −5N | =6B | +16N | −1N | 5.5 | 42.5 | 46.0 | 24.75 | 1625 | +60.4 |
| 8 | Tran Tuan Khang | 1650 | VIE | +7B | −13N | =29B | +10N | +24B | =14N | +5B | −1B | =9N | 5.5 | 42.0 | 44.5 | 26.25 | 1601 | -19.6 |
| 9 | Nguyen Phuc Cao Danh | 1581 | VIE | +28N | −2B | +21N | =16B | =13N | =3B | +24N | =12N | =8B | 5.5 | 39.5 | 42.5 | 23.25 | 1608 | +10.8 |
| 10 | To Phuc Gia Dat | 0 | VIE | =3N | =15B | =22N | −8B | +26N | =12B | =11N | +23B | +16N | 5.5 | 38.5 | 42.0 | 24.00 | 1570 | 0.0 |
| 11 | Nguyen, Duc Minh | 0 | VIE | −6B | =23N | −25B | +30N | +32B | =15N | =10B | +24B | +13N | 5.5 | 33.0 | 34.5 | 18.75 | 1560 | 0.0 |
| 12 | Le Huynh Duy Anh | 1602 | VIE | +16B | −5N | −7B | +27N | =15B | =10N | +29N | =9B | =6B | 5.0 | 40.0 | 42.5 | 21.00 | 1518 | -30.4 |
| 13 | Nguyen Viet Khoi | 1504 | VIE | +27N | +8B | =4N | −1N | =9B | +17B | =3N | −2B | −11B | 4.5 | 47.0 | 50.5 | 22.25 | 1604 | +37.6 |
| 14 | Le Cong Thang | 1538 | VIE | =19N | +24B | +3N | +4B | −7N | =8B | −2N | −6N | =15B | 4.5 | 44.0 | 47.5 | 22.75 | 1561 | +10.8 |
| 15 | Nguyen Le Phuong Lam | 1473 | VIE | =25B | =10N | +18B | −6N | =12N | =11B | +26N | −4B | =14N | 4.5 | 40.0 | 43.5 | 20.00 | 1503 | +7.6 |
| 16 | Phan Ba Phat | 0 | VIE | −12N | +26B | +20B | =9N | −3N | +29B | +17N | −7B | −10B | 4.5 | 40.0 | 42.5 | 17.75 | 1535 | 0.0 |
| 17 | Tran Minh Quang | 1493 | VIE | +23B | +6N | −5B | −7N | +18B | −13N | −16B | +21N | =22B | 4.5 | 38.0 | 41.5 | 19.50 | 1468 | -9.6 |
| 18 | Nguyen Duc Long | 0 | VIE | +32N | −4B | −15N | +22B | −17N | =21B | =20N | =19B | +24N | 4.5 | 35.5 | 37.0 | 15.50 | 1529 | 0.0 |
| 19 | Ngo Duc Anh Dung | 0 | VIE | =14B | +22N | −6B | −29N | −23B | +28N | =21B | =18N | +25B | 4.5 | 32.5 | 35.0 | 17.00 | 1547 | +13.2 |
| 20 | Dinh Le Hai Phong | 1489 | VIE | −21N | +31B | −16N | −26B | +25B | =30N | =18B | =22N | +27B | 4.5 | 30.0 | 32.5 | 15.00 | 1374 | -11.6 |
| 21 | Tran Anh Chau | 0 | VIE | +20B | −1N | −9B | −32N | +28B | =18N | =19N | −17B | +23N | 4.0 | 37.5 | 39.0 | 15.50 | 1418 | 0.0 |
| 22 | Dao Quang Duc Uy | 1661 | VIE | =24N | −19B | =10B | −18N | −27B | +31N | +30B | =20B | =17N | 4.0 | 33.0 | 35.5 | 14.00 | 1399 | -56.8 |
| 23 | Nguyen Le Minh Duc | 0 | VIE | −17N | =11B | +32N | −3B | +19N | −24N | +25B | −10N | −21B | 3.5 | 37.0 | 38.5 | 12.25 | 1435 | 0.0 |
| 24 | Dinh Minh Duc | 1464 | VIE | =22B | −14N | +30B | +25N | −8N | +23B | −9B | −11N | −18B | 3.5 | 36.5 | 39.0 | 11.50 | 1286 | -30.0 |
| 25 | Nguyen Tuan Minh | 0 | VIE | =15N | −3B | +11N | −24B | −20N | +32B | −23N | +26B | −19N | 3.5 | 35.5 | 37.0 | 12.75 | 1395 | 0.0 |
| 26 | Nguyen Chau Hao Thien | 1472 | VIE | −5B | −16N | +28B | +20N | −10B | +27N | −15B | −25N | =31N | 3.5 | 34.5 | 37.0 | 12.25 | 1558 | +14.4 |
| 27 | Truong Duc Thien Phuc | 0 | VIE | −13B | −7N | +31N | −12B | +22N | −26B | =28N | +30B | −20N | 3.5 | 32.5 | 35.0 | 10.50 | 1286 | 0.0 |
| 28 | Nguyen Duc Minh | 1432 | VIE | −9B | −29N | −26N | +31B | −21N | −19B | =27B | +32N | =30N | 3.0 | 28.5 | 30.0 | 7.00 | 1270 | -38.8 |
| 29 | Nguyen Quang Phuc | 1470 | VIE | −2N | +28B | =8N | +19B | −4N | −16N | −12B | −31B | F | 2.5 | 37.5 | 37.5 | 10.25 | 1528 | +16.0 |
| 30 | Ngo Tuan Bao | 0 | VIE | −4N | =32B | −24N | −11B | +31N | =20B | −22N | −27N | =28B | 2.5 | 32.5 | 34.0 | 7.00 | 1340 | 0.0 |
| 31 | Nguyen Ngoc Duc Thien | 0 | VIE | −1B | −20N | −27B | −28N | −30B | −22B | +32N | +29N | =26B | 2.5 | 31.0 | 32.5 | 5.75 | 1422 | 0.0 |
| 32 | Pham Hoang Bao Long | 1525 | VIE | −18B | =30N | −23B | +21B | −11N | −25N | −31B | −28B | F | 1.5 | 29.0 | 29.0 | 5.25 | 633 | -25.2 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Le Nguyen PhongVIE+82.87.5 pts · #3
- 2Nguyen Thanh SanVIE+60.45.5 pts · #12
- 3Nguyen Viet KhoiVIE+37.64.5 pts · #11
Top rating losers
- 1Nguyen Nam LongVIE-72.45.5 pts · #2
- 2Dao Quang Duc UyVIE-56.84.0 pts · #25
- 3Nguyen Duc MinhVIE-38.83.0 pts · #29
Biggest upsets
- R8+284 Elo gap
- R9+212 Elo gap
- R7+189 Elo gap