2025 CTCA International Chess Open- Age group GU15U15GU13U13
Open SwissStandard
28 players participated in this 9-round tournament, held from 16 Jul 2025 to 23 Jul 2025 in Taoyuan, Chinese Taipei. 5 federations represented. Top 10 Elo average was 1578, and top seed was Rainen Yi-Fan Simpson (🇹🇼 TPE, 1786).
Hajun Jeong (🇰🇷 KOR, 0) won with 7.0/9, ahead of Rainen Yi-Fan Simpson (6.0) and Caleb Wang (6.0). Jeong won solo starting round 8.
The biggest upset came in round 2: Pei-Xuan Wu (1479) beat Yuchan B Shin (1660), a +181-point gap.
Location
🇹🇼Taoyuan, Chinese Taipei
Dates
16 Jul 2025 → 23 Jul 2025
Time control
Standard: 90 minutes for game with 30 seconds delay from move 1
System
Swiss · 9 rounds
Federations · 5 represented
🇹🇼Chinese Taipei×20
🇰🇷South Korea×2
🇭🇰Hong Kong China×1
🇦🇺Australia×1
🇫🇷France×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 9 roundsHajun Jeong led from R3; +1.0-point edge over the runner-up.
Co-leaders
13
4
1
1
1
1
2
1
1
R3–R9 · LEAD HELD
Hajun Jeong never relinquished the lead after R3; final gap +1.0 over the runner-up.
R3 · HEAD-TO-HEAD · WINNER VS 2ND
Hajun Jeong beat Jing Pu (Black).
R1–R4 · WIN STREAK
Hajun Jeong won 4 in a row (R1–R4).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Hajun Jeong | * | 1 | 0 | 1 |
| 2Jing Pu | 0 | * | 1 | ½ |
| 3Yu-En Yen | 1 | 0 | * | ½ |
| 4Rainen Yi-Fan Simpson | 0 | ½ | ½ | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Jeong, Hajun | 0 | KOR | +?N | +3B | +5N | +2B | =10N | +7B | −4N | =11B | +13N | 7.0 | 44.5 | 44.5 | 33.50 | 1699 | 0.0 |
| 2 | Simpson, Rainen Yi-Fan | 1786 | TPE | +14B | +16N | =4B | −1N | +18B | =10N | =7B | +3B | =5N | 6.0 | 45.0 | 49.0 | 30.75 | 2354 | +17.2 |
| 3 | Wang, Caleb | 1632 | AUS | +22B | −1N | +24B | +8N | +6B | −4N | +10B | −2N | +7B | 6.0 | 44.5 | 48.0 | 29.00 | 1737 | +17.2 |
| 4 | Yen, Yu-En | 0 | TPE | +10N | +21B | =2N | =7B | =11N | +3B | +1B | −5N | =?N | 6.0 | 44.5 | 44.5 | 30.25 | 1635 | 0.0 |
| 5 | Pu, Jing | 0 | TPE | +9B | +18N | −1B | −6N | +8B | +12N | =?N | +4B | =2B | 6.0 | 44.5 | 44.5 | 29.00 | 1602 | 0.0 |
| 6 | Wang, Yu-Chi Xavier | 1571 | TPE | +25N | =7B | =8N | +5B | −3N | =15B | −9N | +16B | +11N | 5.5 | 42.5 | 45.0 | 25.75 | 1458 | -26.0 |
| 7 | Hsieh, Chun-Wei | 0 | TPE | +?B | =6N | +13B | =4N | +12B | −1N | =2N | +?B | −3N | 5.5 | 40.5 | 40.5 | 18.75 | 1656 | 0.0 |
| 8 | Wu, Pei-Xuan | 1479 | TPE | =12B | +19N | =6B | −3B | −5N | +22N | +20B | =10N | +17B | 5.5 | 39.5 | 43.5 | 23.75 | 1694 | +45.6 |
| 9 | Huang, Hao-Xuan | 1513 | TPE | −5N | +25B | +21N | −10B | +17N | =11B | +6B | −13N | +15B | 5.5 | 39.0 | 41.5 | 23.00 | 1626 | +26.0 |
| 10 | Chuang, Kai-Jui | 0 | TPE | −4B | +26N | +?B | +9N | =1B | =2B | −3N | =8B | =12N | 5.0 | 43.0 | 43.0 | 19.25 | 1620 | 0.0 |
| 11 | Hung, Jian-Ru | 1566 | TPE | +27B | =24N | =12B | =18N | =4B | =9N | +16B | =1N | −6B | 5.0 | 41.0 | 43.0 | 22.00 | 1392 | -28.0 |
| 12 | Su,Guan-Rui | 0 | TPE | =8N | +17B | =11N | +?B | −7N | −5B | +19B | =15N | =10B | 5.0 | 39.5 | 39.5 | 18.00 | 1606 | 0.0 |
| 13 | Cheng, Yu Chen (Ethan) | 1565 | TPE | =17N | +23B | −7N | +20B | −16N | +18B | =15N | +9B | −1B | 5.0 | 39.0 | 43.0 | 21.75 | 2303 | +51.6 |
| 14 | Chuang, Ruei-En | 0 | TPE | −2N | =?N | =17B | +23B | −?N | −20B | +26N | +18B | +19N | 5.0 | 28.0 | 28.0 | 16.00 | 1544 | 0.0 |
| 15 | Lin, Leon Brian | 0 | TPE | −23N | +28B | −?N | +25B | +19B | =6N | =13B | =12B | −9N | 4.5 | 33.0 | 33.0 | 15.75 | 1497 | 0.0 |
| 16 | Chung, Frederick H. | 0 | TPE | +19B | −2B | =20N | +24N | +13B | −?B | −11N | −6N | +?B | 4.5 | 33.0 | 33.0 | 14.50 | 1560 | 0.0 |
| 17 | Lin, Min-Hao | 0 | TPE | =13B | −12N | =14N | +21B | −9B | −19N | +?B | +20N | −8N | 4.0 | 38.0 | 38.0 | 13.00 | 1537 | 0.0 |
| 18 | Lien, Pei Jung | 1475 | TPE | +28N | −5B | +23N | =11B | −2N | −13N | =24B | −14N | +25B | 4.0 | 37.0 | 38.5 | 12.25 | 1363 | -16.4 |
| 19 | Shin, Yuchan B | 1660 | KOR | −16N | −8B | +27N | +22B | −15N | +17B | −12N | +21B | −14B | 4.0 | 36.5 | 38.5 | 14.00 | 1456 | -21.2 |
| 20 | James, Lucie | 1531 | FRA | −24B | +27N | =16B | −13N | =21B | +14N | −8N | −17B | +26N | 4.0 | 33.5 | 35.5 | 13.25 | 1216 | -47.2 |
| 21 | Liu, Lillian Yu-Ning | 1404 | TPE | +26B | −4N | −9B | −17N | =20N | =28B | +22B | −19N | +24B | 4.0 | 33.0 | 34.5 | 12.25 | 1292 | -18.8 |
| 22 | FIDE 16304683 | 0 | — | −3N | −?B | +28N | −19N | +24B | −8B | −21N | +26B | +27N | 4.0 | 28.5 | 28.5 | 9.00 | 752 | 0.0 |
| 23 | Wu, Tansi Tung | 0 | TPE | +15B | −13N | −18B | −14N | =26B | −?N | +27B | =24N | +28B | 4.0 | 27.5 | 27.5 | 10.75 | 742 | 0.0 |
| 24 | Mok, Varick | 0 | TPE | +20N | =11B | −3N | −16B | −22N | +25B | =18N | =23B | −21N | 3.5 | 35.5 | 38.0 | 13.00 | 1455 | 0.0 |
| 25 | Kuo, Yu-Chun | 0 | TPE | −6B | −9N | +26B | −15N | =27B | −24N | +28B | −?N | −18N | 2.5 | 28.5 | 28.5 | 4.50 | 737 | 0.0 |
| 26 | FIDE 39979660 | 0 | — | −21N | −10B | −25N | =28B | =23N | +27N | −14B | −22N | −20B | 2.0 | 30.5 | 32.0 | 4.75 | 682 | 0.0 |
| 27 | Lau, Chi Ngai | 0 | HKG | −11N | −20B | −19B | +?N | =25N | −26B | −23N | =28N | −22B | 2.0 | 27.0 | 27.0 | 2.00 | 1396 | 0.0 |
| 28 | FIDE 16302621 | 0 | — | −18B | −15N | −22B | =26N | −?B | =21N | −25N | =27B | −23N | 1.5 | 27.0 | 27.0 | 4.00 | 1228 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Cheng, Yu Chen (Ethan)TPE+51.65.0 pts · #8
- 2Wu, Pei-XuanTPE+45.65.5 pts · #12
- 3Huang, Hao-XuanTPE+26.05.5 pts · #10
Top rating losers
- 1James, LucieFRA-47.24.0 pts · #23
- 2Hung, Jian-RuTPE-28.05.0 pts · #18
- 3Wang, Yu-Chi XavierTPE-26.05.5 pts · #17
Biggest upsets
- R2+181 Elo gap