2025 CTCA International Chess Open-Age Group U11GU11U9GU9U7GU7
Open SwissStandard
33 players participated in this 9-round tournament, held from 16 Jul 2025 to 23 Jul 2025 in Taoyuan, Chinese Taipei. 7 federations represented. Top 10 Elo average was 930, and top seed was Hung-Chuan Chiu (🇹🇼 TPE, 1695).
Hung-Chuan Chiu (🇹🇼 TPE, 1695) won with 8.5/9, ahead of I-Hsuan Hung (8.5) and Jonathan Bao Du (7.0). Chiu shared the lead from round 1, winning on tie-break.
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 · 7 represented
🇹🇼Chinese Taipei×17
🇺🇸United States of America×2
🇭🇰Hong Kong China×2
🇰🇷South Korea×2
🇯🇵Japan×2
🇦🇺Australia×1
🇲🇾Malaysia×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 9 roundsTight race until R9; 2 players tied at 8.5/9, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 2 at the finish.
Co-leaders
22
9
5
2
4
2
2
2
2
R9 · TIEBREAK CLUSTER
2 players finish on 8.5/9. Chiu takes the title on Buchholz Cut1 (48.5).
R5 · HEAD-TO-HEAD · WINNER VS 2ND
Hung-Chuan Chiu drew with I-Hsuan Hung (White).
WIN STREAKS · 3 top finishers
Hung-Chuan Chiu 4+4 wins (R1–R4, R6–R9)I-Hsuan Hung 4+4 wins (R1–R4, R6–R9)Jonathan Bao Du 4 wins (R3–R6)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Hung-Chuan Chiu | * | ½ | 1 | 1 |
| 2I-Hsuan Hung | ½ | * | — | 1 |
| 3Jonathan Bao Du | 0 | — | * | — |
| 4Yu-Fei Lin | 0 | 0 | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Chiu, Hung-Chuan | 1695 | TPE | +20B | +14N | +23B | +8N | =2B | +22N | +3B | +4N | +10B | 8.5 | 48.5 | 53.0 | 48.75 | 1782 | +11.2 |
| 2 | Hung, I-Hsuan | 1587 | TPE | +26B | +27N | +7B | +15N | =1N | +4B | +9B | +5N | +8B | 8.5 | 48.5 | 52.5 | 48.25 | 1870 | +30.0 |
| 3 | Du, Jonathan Bao | 1477 | USA | +31B | −7N | +28B | +6B | +13N | +11B | −1N | +9B | +12N | 7.0 | 47.0 | 50.0 | 35.50 | 1558 | +8.0 |
| 4 | Lin, Yu-Fei | 0 | TPE | +12B | +?N | +10B | =5N | +?B | −2N | +22B | −1B | +13N | 6.5 | 44.0 | 44.0 | 24.00 | 1514 | 0.0 |
| 5 | Chen Yong-Ye | 1656 | TPE | +32N | +13B | +11N | =4B | −22N | =10B | +17N | −2B | +16N | 6.0 | 46.0 | 49.0 | 30.00 | 1332 | -34.0 |
| 6 | Tan, Yu Yang | 1418 | MAS | =25B | +16N | +30B | −3N | =15B | +19N | +14B | −8N | +20B | 6.0 | 43.0 | 46.5 | 28.75 | 676 | -16.8 |
| 7 | Okubo, Sui | 0 | JPN | +9N | +3B | −2N | −11B | +?N | −12N | +?B | +24B | +17N | 6.0 | 42.0 | 42.0 | 22.50 | 1532 | 0.0 |
| 8 | Sun, Dawson | 0 | TPE | +?N | +?B | +?N | −1B | −11N | +23N | +19B | +6B | −2N | 6.0 | 38.0 | 38.0 | 15.50 | 1443 | 0.0 |
| 9 | Hernandez, Jino | 0 | JPN | −7B | +?N | +?B | +?N | +18B | +17B | −2N | −3N | +15B | 6.0 | 36.5 | 36.5 | 15.00 | 732 | 0.0 |
| 10 | Huang, Joshua Kai-En | 1466 | AUS | +29N | =24B | −4N | +21B | +30N | =5N | +11B | =13B | −1N | 5.5 | 45.0 | 48.5 | 25.50 | 1484 | +1.6 |
| 11 | Chuang, Yu-Chen | 0 | TPE | +28B | +?N | −5B | +7N | +8B | −3N | −10N | +18B | =?N | 5.5 | 39.5 | 39.5 | 21.00 | 1223 | 0.0 |
| 12 | FIDE 16303903 | 0 | — | −4N | −21B | +?N | +?B | +31N | +7B | =?N | +22B | −3B | 5.5 | 31.5 | 31.5 | 13.50 | 1337 | 0.0 |
| 13 | Hsieh, Yi-Li | 0 | TPE | +?B | −5N | +?B | +?N | −3B | +18N | +?B | =10N | −4B | 5.5 | 30.0 | 30.0 | 7.75 | 1458 | 0.0 |
| 14 | Huang, Pin-Cheng | 0 | TPE | +?N | −1B | +?N | +?B | −17N | +?B | −6N | =?N | +25B | 5.5 | 24.0 | 24.0 | 4.50 | 758 | 0.0 |
| 15 | Chang, Ryan | 0 | USA | +?N | =22B | +21N | −2B | =6N | =20B | +24N | =16B | −9N | 5.0 | 44.0 | 44.0 | 19.25 | 1310 | 0.0 |
| 16 | FIDE 16306147 | 0 | — | =17N | −6B | +33N | +?B | −19B | +21N | +23B | =15N | −5B | 5.0 | 38.5 | 38.5 | 16.50 | 737 | 0.0 |
| 17 | Cheng, Chia-Yun | 0 | TPE | =16B | +25N | =?B | +?N | +14B | −9N | −5B | +27N | −7B | 5.0 | 37.0 | 37.0 | 16.50 | 1427 | 0.0 |
| 18 | Wang, Yu-Chia | 0 | TPE | +?B | −?N | +20B | +23N | −9N | −13B | +29N | −11N | +27B | 5.0 | 34.5 | 34.5 | 17.50 | 783 | 0.0 |
| 19 | Chan, Hsiang-Yin | 0 | TPE | =?N | +33B | +24N | −22B | +16N | −6B | −8N | =21B | +?N | 5.0 | 33.0 | 33.0 | 14.25 | 618 | 0.0 |
| 20 | Lee, Xuan Xin | 0 | TPE | −1N | +?B | −18N | +?B | +?N | =15N | +30B | =?B | −6N | 5.0 | 28.0 | 28.0 | 6.00 | 1293 | 0.0 |
| 21 | FIDE 16305663 | 0 | — | =30B | +12N | −15B | −10N | +32B | −16B | +?N | =19N | =23B | 4.5 | 37.0 | 37.0 | 15.00 | 663 | 0.0 |
| 22 | Lee, Jiho | 0 | KOR | +?B | =15N | +?B | +19N | +5B | −1B | −4N | −12N | −?B | 4.5 | 36.5 | 36.5 | 13.50 | 1677 | 0.0 |
| 23 | FIDE 16306244 | 0 | — | +?N | +?B | −1N | −18B | +?N | −8B | −16N | +?B | =21N | 4.5 | 29.0 | 29.0 | 2.25 | 898 | 0.0 |
| 24 | Lan, Shao-En | 0 | TPE | +?B | =10N | −19B | −25N | +?B | +?N | −15B | −7N | +33B | 4.5 | 28.5 | 28.5 | 5.25 | 1463 | 0.0 |
| 25 | Lin, Ke-Di | 0 | TPE | =6N | −17B | +?N | +24B | −?N | −30B | +?N | +?B | −14N | 4.5 | 24.5 | 24.5 | 7.50 | 1308 | 0.0 |
| 26 | Lee, Ying-Le | 0 | TPE | −2N | +?B | −?B | =?N | =?B | +?N | =?B | +?N | −?B | 4.5 | 8.5 | 8.5 | 0.00 | 787 | 0.0 |
| 27 | Lau, Yu Fan Ron | 0 | HKG | +?N | −2B | +?N | −?B | +?N | −?B | +?N | −17B | −18N | 4.0 | 18.5 | 18.5 | 0.00 | 785 | 0.0 |
| 28 | Mak, Hon Sze Hanns | 0 | HKG | −11N | +?B | −3N | −?N | +?B | −?B | +?N | −?B | +?N | 4.0 | 12.5 | 12.5 | 0.00 | 676 | 0.0 |
| 29 | FIDE 16306139 | 0 | — | −10B | −?N | +?B | +?N | +?B | −?N | −18B | −?N | +?N | 4.0 | 10.5 | 10.5 | 0.00 | 663 | 0.0 |
| 30 | Kim, Yejun A | 0 | KOR | =21N | +?B | −6N | +?B | −10B | +25N | −20N | −?B | −?N | 3.5 | 25.5 | 25.5 | 6.75 | 641 | 0.0 |
| 31 | Lien, Bo-Cheng | 0 | TPE | −3N | +?B | −?N | +?B | −12B | −?N | −?B | −?N | +?B | 3.0 | 12.5 | 12.5 | 0.00 | 676 | 0.0 |
| 32 | FIDE 16305612 | 0 | — | −5B | −?N | −?B | +?N | −21N | +?B | −?N | +?B | −?N | 3.0 | 10.5 | 10.5 | 0.00 | 856 | 0.0 |
| 33 | Liao, Yu-Kai | 0 | TPE | =?B | −19N | −16B | −?N | −?B | F | +?N | +?B | −24N | 2.5 | 14.5 | 14.5 | 0.00 | 1583 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Hung, I-HsuanTPE+30.08.5 pts · #3
- 2Chiu, Hung-ChuanTPE+11.28.5 pts · #1
- 3Du, Jonathan BaoUSA+8.07.0 pts · #7
Top rating losers
- 1Chen Yong-YeTPE-34.06.0 pts · #17
- 2Tan, Yu YangMAS-16.86.0 pts · #32
- 3Mak, Hon Sze HannsHKG0.04.0 pts · #24