2025 Korea Youth Selection U12
Open SwissStandard
34 players participated in this 7-round tournament, held from 13 Jun 2025 to 16 Jun 2025 in Gwacheon, South Korea. 2 federations represented. Top 10 Elo average was 1776, and top seed was Echae Kim (🇰🇷 KOR, 1903).
Juwon Seo (🇰🇷 KOR, 1860) won with 6.5/7, ahead of Jihu Song (5.5) and Joohyuk Hong (5.0). Seo won solo starting round 4.
The biggest upset came in round 4: Taewoo Kim (1709) beat Echae Kim (1903), a +194-point gap.
Location
🇰🇷Gwacheon, South Korea
Dates
13 Jun 2025 → 16 Jun 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 7 rounds
Federations · 2 represented
🇰🇷South Korea×30
🇬🇺Guam×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 7 roundsJuwon Seo led from R4; +1.0-point edge over the runner-up.
Co-leaders
16
8
2
1
1
1
1
R4–R7 · LEAD HELD
Juwon Seo never relinquished the lead after R4; final gap +1.0 over the runner-up.
WIN STREAKS · 2 top finishers
Juwon Seo 5 wins (R1–R5)Joohyuk Hong 3 wins (R1–R3)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Juwon Seo | * | 1 | 1 | — |
| 2Jihu Song | 0 | * | ½ | — |
| 3Joohyuk Hong | 0 | ½ | * | ½ |
| 4Keonwoo Kim | — | — | ½ | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Seo, Juwon | 1860 | KOR | +30N | +12B | +2N | +3B | +7N | =6B | +5N | 6.5 | 28.0 | 29.0 | 26.75 | 2132 | +67.2 |
| 2 | Song, Jihu | 1764 | KOR | +15B | +21N | −1B | +24N | +10B | =3B | +8N | 5.5 | 27.0 | 30.0 | 21.00 | 1899 | +48.4 |
| 3 | Hong, Joohyuk | 1803 | KOR | +17B | +18N | +10B | −1N | +5B | =2N | =4B | 5.0 | 29.5 | 33.0 | 21.25 | 1854 | +23.2 |
| 4 | Kim, Keonwoo | 1805 | KOR | +26N | =9B | =11N | +6B | =16N | +7B | =3N | 5.0 | 26.5 | 29.5 | 20.75 | 1830 | +15.2 |
| 5 | Kim, Taewoo | 1709 | KOR | +28N | +14B | =6N | +8B | −3N | +9B | −1B | 4.5 | 29.0 | 30.5 | 16.75 | 1792 | +30.4 |
| 6 | Jang, Seojun | 1826 | KOR | +19B | +16N | =5B | −4N | +22B | =1N | =10B | 4.5 | 27.5 | 30.5 | 17.75 | 1765 | -13.0 |
| 7 | Lee, Yugeon | 1764 | KOR | +27N | +22B | =8N | +9B | −1B | −4N | +15B | 4.5 | 27.0 | 29.5 | 15.75 | 1758 | +5.6 |
| 8 | Kim, Echae | 1903 | KOR | +29B | +11N | =7B | −5N | +21B | +16N | −2B | 4.5 | 25.5 | 27.0 | 14.75 | 1754 | -43.2 |
| 9 | Ock, Seungheon | 1578 | KOR | +32B | =4N | +13B | −7N | +15B | −5N | +22B | 4.5 | 24.5 | 25.5 | 14.00 | 1698 | +39.2 |
| 10 | Lee, Ain | 1666 | KOR | +24B | +33N | −3N | +26B | −2N | +21B | =6N | 4.5 | 24.0 | 24.0 | 11.25 | 1700 | +14.4 |
| 11 | Gim, Hajin | 1655 | KOR | +20N | −8B | =4B | −15N | +17B | +23N | +18B | 4.5 | 23.5 | 26.5 | 16.00 | 1683 | +15.2 |
| 12 | Shin, Yisoo | 1624 | KOR | +23B | −1N | +17B | −21N | +24B | +13N | −16B | 4.0 | 23.5 | 26.5 | 13.50 | 1614 | -3.2 |
| 13 | Shin, Seungmin | 1620 | KOR | −14N | +28B | −9N | +25B | +27N | −12B | +21N | 4.0 | 21.0 | 22.5 | 10.00 | 1603 | +4.4 |
| 14 | Park, Junhyeok | 0 | KOR | +13B | −5N | −21B | =17N | +31B | =22N | +23B | 4.0 | 21.0 | 22.0 | 11.25 | 1540 | 0.0 |
| 15 | Yang, Jin | 1463 | KOR | −2N | +25B | =22N | +11B | −9N | +26B | −7N | 3.5 | 25.0 | 28.0 | 12.00 | 1567 | +28.4 |
| 16 | Kim, Junesun | 1619 | GUM | F | −6B | +27N | +23N | =4B | −8B | +12N | 3.5 | 23.5 | 23.5 | 12.00 | 1728 | +34.8 |
| 17 | Park, Chabeen | 1482 | KOR | −3N | +31B | −12N | =14B | −11N | +28B | +27N | 3.5 | 21.5 | 22.5 | 7.00 | 1526 | +10.0 |
| 18 | Kim, Gyubeen | 1599 | KOR | +31N | −3B | −24N | =28B | +20N | +19B | −11N | 3.5 | 21.0 | 22.0 | 8.75 | 1483 | -39.2 |
| 19 | Maeng, Chihyun | 1485 | KOR | −6N | =20B | +30N | −22B | +28N | −18N | +25B | 3.5 | 19.0 | 20.0 | 7.25 | 1493 | +4.0 |
| 20 | Kawai, Alen | 1420 | KOR | −11B | =19N | −23B | +33N | −18B | +30N | +29B | 3.5 | 17.0 | 17.0 | 4.25 | 1464 | +11.6 |
| 21 | Lee, Chamin | 1546 | KOR | +25N | −2B | +14N | +12B | −8N | −10N | −13B | 3.0 | 26.5 | 29.5 | 11.00 | 1469 | -18.0 |
| 22 | Lim, Jihyuk | 1527 | KOR | +34B | −7N | =15B | +19N | −6N | =14B | −9N | 3.0 | 24.5 | 24.5 | 7.25 | 1469 | -18.0 |
| 23 | Oh, Jeongyun | 1416 | KOR | −12N | +30B | +20N | −16B | +26N | −11B | −14N | 3.0 | 22.5 | 23.5 | 7.50 | 1545 | +43.2 |
| 24 | Ahn, Taehyun | 1451 | KOR | −10N | +29N | +18B | −2B | −12N | −25B | +32N | 3.0 | 22.0 | 23.0 | 6.00 | 1563 | +24.8 |
| 25 | Lee, Yeonho | 0 | KOR | −21B | −15N | +29B | −13N | +32B | +24N | −19N | 3.0 | 18.5 | 19.5 | 5.50 | 1381 | 0.0 |
| 26 | Han, Sangjun | 1482 | KOR | −4B | +32N | +33B | −10N | −23B | −15N | +31B | 3.0 | 18.0 | 18.0 | 2.00 | 782 | -58.8 |
| 27 | Lho, Yoojun | 1469 | KOR | −7B | +34N | −16B | +31N | −13B | =29N | −17B | 2.5 | 18.0 | 18.0 | 1.75 | 1229 | -48.0 |
| 28 | Park, Jaeik | 1456 | KOR | −5B | −13N | +32B | =18N | −19B | −17N | F | 1.5 | 20.0 | 20.0 | 2.75 | 1201 | -48.4 |
| 29 | Lee, Hyeonjun | 1526 | KOR | −8N | −24B | −25N | F | +33B | =27B | −20N | 1.5 | 16.5 | 16.5 | 1.25 | 1240 | -56.0 |
| 30 | Ha, Jungwoo | 1489 | KOR | −1B | −23N | −19B | −32N | F | −20B | +33N | 1.0 | 17.5 | 17.5 | 0.00 | 737 | -72.8 |
| 31 | FIDE 13226010 | 0 | — | −18B | −17N | F | −27B | −14N | +33B | −26N | 1.0 | 16.5 | 16.5 | 0.00 | 703 | 0.0 |
| 32 | Heo, Jiyul | 0 | KOR | −9N | −26B | −28N | +30B | −25N | F | −24B | 1.0 | 16.0 | 16.0 | 1.00 | 1247 | 0.0 |
| 33 | FIDE 13233971 | 0 | — | F | −10B | −26N | −20B | −29N | −31N | −30B | 0.0 | 14.5 | 14.5 | 0.00 | 712 | 0.0 |
| 34 | FIDE 13233017 | 0 | — | −22N | −27B | F | F | F | F | F | 0.0 | 8.0 | 8.0 | 0.00 | 697 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Seo, JuwonKOR+67.26.5 pts · #1
- 2Song, JihuKOR+48.45.5 pts · #2
- 3Oh, JeongyunKOR+43.23.0 pts · #14
Top rating losers
- 1Ha, JungwooKOR-72.81.0 pts · #33
- 2Han, SangjunKOR-58.83.0 pts · #30
- 3Lee, HyeonjunKOR-56.01.5 pts · #28
Biggest upsets
- R4+194 Elo gap
- R4+192 Elo gap
- R3+148 Elo gap