25th LSH Tournament
Open SwissStandard
31 players participated in this 6-round tournament, held from 17 May 2025 to 18 May 2025 in Seoul, South Korea. Top 10 Elo average was 1641, and top seed was Jaehyun Sung (🇰🇷 KOR, 1741).
Yongsu Han (🇰🇷 KOR, 1679) won with 5.0/6, ahead of Hajin Gim (4.5) and Jinwoo A Park (4.5). Han shared the lead from round 4 and won solo starting round 5.
The biggest upset came in round 6: Jaeha Kim (1570) beat Hyunbin Choi (1725), a +155-point gap.
Location
🇰🇷Seoul, South Korea
Dates
17 May 2025 → 18 May 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 6 rounds
Federations · 1 represented
🇰🇷South Korea×30
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 6 roundsYongsu Han 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
9
3
1
2
1
1
R5 · LEADER CHANGE18 May
Yongsu Han takes the sole lead (4.5/5).
R5 · HEAD-TO-HEAD · WINNER VS 2ND
Yongsu Han beat Hajin Gim (White).
WIN STREAKS · 2 top finishers
Yongsu Han 3 wins (R3–R5)Jinwoo A Park 3 wins (R3–R5)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Yongsu Han | * | 1 | ½ | 1 |
| 2Hajin Gim | 0 | * | — | — |
| 3Jinwoo A Park | ½ | — | * | — |
| 4Jaeha Kim | 0 | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Han, Yongsu | 1679 | KOR | +12B | =8N | +5B | +9N | +2B | =3B | 5.0 | 19.0 | 21.5 | 17.75 | 1938 | +25.6 |
| 2 | Gim, Hajin | 1639 | KOR | +4N | +6B | =14N | +15B | −1N | +8B | 4.5 | 18.5 | 20.5 | 14.25 | 1752 | +34.8 |
| 3 | Park, Jinwoo A | 0 | KOR | +11N | −14B | +21N | +4B | +10B | =1N | 4.5 | 17.5 | 19.0 | 14.00 | 1650 | 0.0 |
| 4 | Lee, Chamin | 1498 | KOR | −2B | +16N | +27B | −3N | +12B | +9N | 4.0 | 16.5 | 17.5 | 8.50 | 1773 | +58.4 |
| 5 | Kim, Jaeha | 1570 | KOR | =23N | +21B | −1N | +13B | =7B | +10N | 4.0 | 16.0 | 17.5 | 9.75 | 1764 | +52.4 |
| 6 | Kim, Jihun | 1541 | KOR | +16B | −2N | −7B | +27N | +22N | +18B | 4.0 | 14.0 | 15.0 | 6.50 | 1696 | +42.4 |
| 7 | Sung, Jaehyun | 1741 | KOR | F | +30B | +6N | =22B | =5N | +15B | 4.0 | 13.5 | 13.5 | 8.75 | 1767 | +2.6 |
| 8 | Hur, Jiyu | 1542 | KOR | +26N | =1B | F | =10N | +9B | −2N | 3.0 | 16.5 | 17.5 | 8.00 | 1666 | +27.2 |
| 9 | Yang, Heewon | 1624 | KOR | +17B | +19N | +15N | −1B | −8N | −4B | 3.0 | 16.0 | 18.0 | 6.00 | 1465 | -43.2 |
| 10 | Choi, Hyunbin | 1725 | KOR | =21N | +13B | +23N | =8B | −3N | −5B | 3.0 | 15.5 | 17.0 | 6.25 | 1508 | -21.8 |
| 11 | Shin, Hyeonseo | 1546 | KOR | −3B | +31N | −19B | +17N | −15N | +16B | 3.0 | 12.5 | 12.5 | 4.00 | 1585 | +6.4 |
| 12 | Lee, Hajin A | 1505 | KOR | −1N | =26B | −13N | +16B | −4N | +21B | 2.5 | 15.0 | 16.0 | 4.00 | 1333 | -34.0 |
| 13 | Kim, Geono | 1420 | KOR | =24B | −10N | +12B | −5N | −18B | +25N | 2.5 | 13.0 | 14.5 | 4.75 | 1492 | +20.0 |
| 14 | Kwak, Joohwan | 1587 | KOR | +31B | +3N | =2B | F | F | F | 2.5 | 9.0 | 9.0 | 6.75 | 1717 | +13.6 |
| 15 | Seo, Yerin | 1522 | KOR | F | +27N | −9B | −2N | +11B | −7N | 2.0 | 18.5 | 19.5 | 4.00 | 1550 | +8.8 |
| 16 | Yang, Heewook | 0 | KOR | −6N | −4B | +31B | −12N | +30B | −11N | 2.0 | 13.5 | 13.5 | 0.00 | 1257 | 0.0 |
| 17 | Woo, Daeun | 1456 | KOR | −9N | −28B | +30N | −11B | −21N | +26B | 2.0 | 9.5 | 9.5 | 1.00 | 760 | -57.6 |
| 18 | Ahn, Junmin | 1504 | KOR | F | F | F | +21B | +13N | −6N | 2.0 | 8.0 | 8.0 | 4.00 | 1613 | +17.2 |
| 19 | Hong, Siwon | 0 | KOR | +28N | −9B | +11N | F | F | F | 2.0 | 7.0 | 7.0 | 4.00 | 1597 | 0.0 |
| 20 | Choo, Jinho | 0 | KOR | F | F | F | +29B | +26N | −22B | 2.0 | 3.5 | 3.5 | 2.00 | 875 | 0.0 |
| 21 | Kim, Taei A | 1509 | KOR | =10B | −5N | −3B | −18N | +17B | −12N | 1.5 | 16.0 | 18.0 | 3.50 | 1400 | -29.2 |
| 22 | Lee, Hwanseo | 1677 | KOR | F | F | F | =7N | −6B | +20N | 1.5 | 10.0 | 10.0 | 4.00 | 1448 | -23.6 |
| 23 | Hong, Juwon | 0 | KOR | =5B | +24N | −10B | F | F | F | 1.5 | 8.5 | 8.5 | 3.50 | 1630 | 0.0 |
| 24 | Kim, Taehyun A | 1600 | KOR | =13N | −23B | +26N | F | F | F | 1.5 | 5.0 | 5.0 | 2.25 | 1418 | -9.2 |
| 25 | Park, Junewoo | 1406 | KOR | F | F | F | =26B | +29N | −13B | 1.5 | 4.5 | 4.5 | 1.50 | 618 | -19.2 |
| 26 | Woo, Hyunjun | 0 | KOR | −8B | =12N | −24B | =25N | −20B | −17N | 1.0 | 11.0 | 12.5 | 2.00 | 1258 | 0.0 |
| 27 | Choi, Gyungsook | 1565 | KOR | +30N | −15B | −4N | −6B | F | F | 1.0 | 10.0 | 10.0 | 0.00 | 716 | -68.4 |
| 28 | Lee, Junwoo A | 1568 | KOR | −19B | +17N | F | F | F | F | 1.0 | 7.0 | 7.0 | 2.00 | 2255 | +14.0 |
| 29 | Choi, Robin | 0 | KOR | F | F | F | −20N | −25B | +30N | 1.0 | 3.5 | 3.5 | 0.00 | 604 | 0.0 |
| 30 | FIDE 13226266 | 0 | — | −27B | −7N | −17B | F | −16N | −29B | 0.0 | 10.0 | 10.0 | 0.00 | 787 | 0.0 |
| 31 | Hwang, Siwoo | 1413 | KOR | −14N | −11B | −16N | F | F | F | 0.0 | 7.5 | 7.5 | 0.00 | 765 | -23.6 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Lee, ChaminKOR+58.44.0 pts · #5
- 2Kim, JaehaKOR+52.44.0 pts · #4
- 3Kim, JihunKOR+42.44.0 pts · #7
Top rating losers
- 1Choi, GyungsookKOR-68.41.0 pts · #30
- 2Woo, DaeunKOR-57.62.0 pts · #27
- 3Yang, HeewonKOR-43.23.0 pts · #9
Biggest upsets
- R6+155 Elo gap
- R5+136 Elo gap
- R6+126 Elo gap