28th LSH Tournment
Open SwissStandard
30 players participated in this 6-round tournament, held from 23 Aug 2025 to 24 Aug 2025 in Seoul, South Korea. Top 10 Elo average was 1711, and top seed was Seojun Jang (🇰🇷 KOR, 1784).
Jiwoo Lee (🇰🇷 KOR, 1775) won with 5.5/6, ahead of Yunseo Hwang (5.0) and Seojun Jang (4.5). Lee won solo starting round 5.
The biggest upset came in round 2: Juyeop Lee (1448) beat Suhyuk Lee (1595), a +147-point gap.
Location
🇰🇷Seoul, South Korea
Dates
23 Aug 2025 → 24 Aug 2025
Time control
Standard: 60 minutes for game
System
Swiss · 6 rounds
Federations · 1 represented
🇰🇷South Korea×29
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 6 roundsJiwoo Lee led from R5; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.
Co-leaders
14
7
4
2
1
1
R5–R6 · LEAD HELD
Jiwoo Lee held the sole lead from R5 through R6 without losing it.
WIN STREAKS · 3 top finishers
Jiwoo Lee 5 wins (R1–R5)Yunseo Hwang 3 wins (R1–R3)Seojun Jang 3 wins (R3–R5)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Jiwoo Lee | * | — | ½ | — |
| 2Yunseo Hwang | — | * | 1 | — |
| 3Seojun Jang | ½ | 0 | * | — |
| 4Yisoo Shin | — | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Lee, Jiwoo | 1775 | KOR | +15N | +22B | +5N | +10B | +4N | =3B | 5.5 | 18.5 | 20.5 | 18.25 | 2074 | +68.4 |
| 2 | Hwang, Yunseo | 1669 | KOR | +29N | +3B | +13N | −4B | +10N | +5B | 5.0 | 18.5 | 18.5 | 14.50 | 1940 | +68.0 |
| 3 | Jang, Seojun | 1784 | KOR | +24B | −2N | +26B | +14N | +7B | =1N | 4.5 | 19.0 | 20.0 | 12.25 | 1792 | +4.4 |
| 4 | Han, Yongsu | 1713 | KOR | +6B | +19N | +7B | +2N | −1B | −18N | 4.0 | 21.5 | 24.0 | 15.50 | 1769 | +7.6 |
| 5 | Hur, Jiyu | 1705 | KOR | +20B | +11N | −1B | +6N | +9B | −2N | 4.0 | 21.5 | 23.5 | 13.00 | 1707 | +2.4 |
| 6 | Choi, Jungwoon | 1480 | KOR | −4N | +8N | +21B | −5B | +13N | +19B | 4.0 | 17.5 | 19.5 | 11.50 | 1655 | +12.0 |
| 7 | Jun, Sanghui | 1672 | KOR | +28N | +27B | −4N | +11B | −3N | +14B | 4.0 | 15.5 | 16.0 | 7.50 | 1628 | -8.4 |
| 8 | Shin, Yisoo | 1607 | KOR | −19N | −6B | +23N | +15B | +20N | +10B | 4.0 | 14.5 | 16.5 | 10.00 | 1784 | +42.8 |
| 9 | Kim, Jaeha | 1671 | KOR | +30B | +21N | −10B | +20N | −5N | +12B | 4.0 | 14.0 | 14.0 | 7.00 | 1502 | -25.2 |
| 10 | Choi, Hyunbin | 1707 | KOR | +23N | +12B | +9N | −1N | −2B | −8N | 3.0 | 21.5 | 23.5 | 9.00 | 1561 | -19.0 |
| 11 | Kim, Seungwon | 0 | KOR | +16N | −5B | +17B | −7N | −14B | +24N | 3.0 | 17.0 | 18.5 | 7.50 | 1605 | 0.0 |
| 12 | Lee, Dahyeon | 0 | KOR | +13B | −10N | +24B | −18N | +17B | −9N | 3.0 | 16.0 | 17.5 | 7.50 | 1634 | 0.0 |
| 13 | Chung, Jaeheon | 1589 | KOR | −12N | +23B | −2B | +26N | −6B | +21N | 3.0 | 16.0 | 17.0 | 5.00 | 1449 | -11.4 |
| 14 | Bae, Dohyun | 1582 | KOR | −21B | +30N | +19B | −3B | +11N | −7N | 3.0 | 16.0 | 16.0 | 5.50 | 927 | -24.8 |
| 15 | Seo, Yerin | 1506 | KOR | −1B | −26N | +30B | −8N | +28B | +22N | 3.0 | 13.0 | 13.0 | 2.50 | 1615 | +24.8 |
| 16 | Lee, Suhyuk | 1595 | KOR | −11B | −20N | =28B | =25N | +24B | +23N | 3.0 | 10.0 | 10.5 | 4.50 | 1544 | -14.0 |
| 17 | Collins, Thomas Mathew | 1556 | KOR | −27N | +28B | −11N | +29B | −12N | +20B | 3.0 | 9.5 | 9.5 | 2.50 | 2252 | +29.2 |
| 18 | Sung, Jaehyun | 1774 | KOR | F | F | F | +12B | +22N | +4B | 3.0 | 9.0 | 9.0 | 9.00 | 2478 | +14.8 |
| 19 | Kim, Jimyeong | 0 | KOR | +8B | −4B | −14N | =24N | +25B | −6N | 2.5 | 16.5 | 18.0 | 6.25 | 1527 | 0.0 |
| 20 | Lee, Juyeop | 1448 | KOR | −5N | +16B | +27N | −9B | −8B | −17N | 2.0 | 18.0 | 19.0 | 4.00 | 1385 | -20.0 |
| 21 | Shin, Yijoon | 0 | KOR | +14N | −9B | −6N | −22B | +29N | −13B | 2.0 | 16.0 | 16.0 | 3.00 | 1375 | 0.0 |
| 22 | Baek, Gyeongrok | 1643 | KOR | +26B | −1N | F | +21N | −18B | −15B | 2.0 | 14.5 | 14.5 | 3.00 | 879 | -53.6 |
| 23 | Jang, Yunseo | 1463 | KOR | −10B | −13N | −8B | +28N | +26B | −16B | 2.0 | 14.0 | 14.5 | 1.50 | 1347 | -25.2 |
| 24 | Ahn, Junmin | 1517 | KOR | −3N | +29B | −12N | =19B | −16N | −11B | 1.5 | 16.0 | 16.0 | 1.25 | 890 | -22.8 |
| 25 | Yang, Heewook | 1486 | KOR | F | F | F | =16B | −19N | +29B | 1.5 | 5.5 | 5.5 | 1.50 | 1598 | +6.4 |
| 26 | Kang, Mingyu A | 0 | KOR | −22N | +15B | −3N | −13B | −23N | F | 1.0 | 14.5 | 14.5 | 3.00 | 1352 | 0.0 |
| 27 | Yu, Hanseo | 0 | KOR | +17B | −7N | −20B | F | F | F | 1.0 | 9.0 | 9.0 | 3.00 | 1440 | 0.0 |
| 28 | Kyeong, Soohyun | 1433 | KOR | −7B | −17N | =16N | −23B | −15N | F | 0.5 | 15.0 | 15.0 | 1.50 | 1187 | -48.4 |
| 29 | FIDE 13230719 | 0 | — | −2B | −24N | F | −17N | −21B | −25N | 0.0 | 13.0 | 13.0 | 0.00 | 756 | 0.0 |
| 30 | Choi, Robin | 0 | KOR | −9N | −14B | −15N | F | F | F | 0.0 | 10.0 | 10.0 | 0.00 | 778 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Lee, JiwooKOR+68.45.5 pts · #1
- 2Hwang, YunseoKOR+68.05.0 pts · #2
- 3Shin, YisooKOR+42.84.0 pts · #3
Top rating losers
- 1Baek, GyeongrokKOR-53.62.0 pts · #30
- 2Kyeong, SoohyunKOR-48.40.5 pts · #24
- 3Jang, YunseoKOR-25.22.0 pts · #18
Biggest upsets
- R2+147 Elo gap
- R6+137 Elo gap
- R2+127 Elo gap