26th LSH Open
Open SwissStandard
31 players participated in this 6-round tournament, held from 05 Jul 2025 to 06 Jul 2025 in Seoul, South Korea. Top 10 Elo average was 1706, and top seed was Keonwoo Kim (🇰🇷 KOR, 1773).
Dongyeop Baek (🇰🇷 KOR, 1617) won with 6.0/6, ahead of Hyunbin Choi (4.5) and Hajin Gim (4.0). Baek won solo starting round 4.
The biggest upset came in round 5: Jaemin Bae (1548) beat Hosung Chae (1755), a +207-point gap.
Location
🇰🇷Seoul, South Korea
Dates
05 Jul 2025 → 06 Jul 2025
Time control
Standard: 60 minutes for game
System
Swiss · 6 rounds
Federations · 1 represented
🇰🇷South Korea×30
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 6 roundsDongyeop Baek led from R4; +1.5-point edge over the runner-up.
Co-leaders
11
5
3
1
1
1
R4–R6 · LEAD HELD
Dongyeop Baek never relinquished the lead after R4; final gap +1.5 over the runner-up.
R5 · HEAD-TO-HEAD · WINNER VS 2ND
Dongyeop Baek beat Hyunbin Choi (Black).
WIN STREAKS · 3 top finishers
Dongyeop Baek 6 wins (R1–R6)Hyunbin Choi 3 wins (R1–R3)Keonwoo Kim 3 wins (R3–R5)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Dongyeop Baek | * | 1 | — | — |
| 2Hyunbin Choi | 0 | * | 1 | — |
| 3Keonwoo Kim | — | 0 | * | — |
| 4Hyeonjeong Zee | — | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Baek, Dongyeop | 1617 | KOR | +19N | +9B | +12N | +4B | +2N | +3B | 6.0 | 18.5 | 20.5 | 20.50 | 2458 | +111.2 |
| 2 | Choi, Hyunbin | 1708 | KOR | +29N | +11B | +3N | =7B | −1B | +5N | 4.5 | 20.5 | 21.0 | 13.25 | 1811 | +14.0 |
| 3 | Gim, Hajin | 1668 | KOR | +25B | +5N | −2B | +15N | +8B | −1N | 4.0 | 20.0 | 21.0 | 10.50 | 1712 | +10.4 |
| 4 | Kwak, Joohwan | 1685 | KOR | +8N | +6B | +17B | −1N | −9N | +10B | 4.0 | 19.0 | 21.0 | 12.00 | 1733 | +14.0 |
| 5 | Kim, Keonwoo | 1773 | KOR | +24N | −3B | +11N | +16B | +7N | −2B | 4.0 | 17.0 | 18.0 | 9.50 | 1751 | -5.6 |
| 6 | Zee, Hyeonjeong | 1712 | KOR | +28B | −4N | +10B | −8N | +22B | +9N | 4.0 | 14.5 | 15.5 | 8.50 | 1828 | +27.6 |
| 7 | Han, Yongsu | 1703 | KOR | F | +22B | +15N | =2N | −5B | +8N | 3.5 | 15.5 | 15.5 | 9.25 | 1773 | +7.6 |
| 8 | Jang, Woonam | 0 | KOR | −4B | +18N | +9N | +6B | −3N | −7B | 3.0 | 18.5 | 20.5 | 9.00 | 1619 | 0.0 |
| 9 | Choi, Chanuk | 1689 | KOR | +26B | −1N | −8B | +24N | +4B | −6B | 3.0 | 18.0 | 19.0 | 6.00 | 1638 | -11.2 |
| 10 | Bae, Dohyun | 1540 | KOR | −17B | +25N | −6N | +11B | +16N | −4N | 3.0 | 15.0 | 16.0 | 6.00 | 1585 | +11.6 |
| 11 | Song, Yoojun | 1556 | KOR | +18B | −2N | −5B | −10N | +29B | +22N | 3.0 | 15.0 | 15.5 | 4.00 | 1431 | -25.2 |
| 12 | Kim, Seungyu | 1542 | KOR | =15N | +24B | −1B | =22N | −20B | +21N | 3.0 | 14.0 | 15.0 | 5.00 | 1507 | -11.2 |
| 13 | Patil, Salil | 0 | KOR | −27B | −26N | +25B | −14N | +24B | +23N | 3.0 | 7.5 | 8.5 | 3.50 | 1540 | 0.0 |
| 14 | Bae, Jaemin | 1548 | KOR | F | F | F | +13B | +15B | +20N | 3.0 | 7.5 | 7.5 | 7.50 | 2430 | +49.2 |
| 15 | Chae, Hosung | 1755 | KOR | =12B | +27N | −7B | −3B | −14N | +16B | 2.5 | 15.5 | 16.5 | 4.50 | 1543 | -68.0 |
| 16 | Kim, Taehyun A | 1590 | KOR | +31B | −17N | +26B | −5N | −10B | −15N | 2.0 | 12.5 | 13.0 | 1.50 | 903 | -56.0 |
| 17 | Sung, Jaehyun | 1748 | KOR | +10N | +16B | −4N | F | F | F | 2.0 | 9.0 | 9.0 | 5.00 | 1728 | -1.4 |
| 18 | Song, Hayul | 0 | KOR | −11N | −8B | −24N | +?B | −23N | +30B | 2.0 | 9.0 | 9.0 | 0.50 | 1332 | 0.0 |
| 19 | Park, Donghyun | 0 | KOR | −1B | +28N | +27B | F | F | F | 2.0 | 8.0 | 8.0 | 2.00 | 1594 | 0.0 |
| 20 | Lee, Seojun B | 1507 | KOR | F | F | F | +29B | +12N | −14B | 2.0 | 6.5 | 6.5 | 3.50 | 1541 | +3.6 |
| 21 | Shin, Wonseok | 0 | KOR | F | F | F | +25N | +30B | −12B | 2.0 | 4.5 | 4.5 | 1.50 | 1515 | 0.0 |
| 22 | Yang, Jin | 1479 | KOR | F | −7N | +31B | =12B | −6N | −11B | 1.5 | 14.0 | 14.0 | 2.00 | 1306 | -29.6 |
| 23 | Ahn, Junmin | 1522 | KOR | F | F | F | =30N | +18B | −13B | 1.5 | 5.5 | 5.5 | 2.25 | 1486 | -2.0 |
| 24 | Seo, Yerin | 1543 | KOR | −5B | −12N | +18B | −9B | −13N | −25N | 1.0 | 15.0 | 16.0 | 2.00 | 869 | -40.0 |
| 25 | Lee, Jeongmin | 0 | KOR | −3N | −10B | −13N | −21B | −?N | +24B | 1.0 | 13.0 | 13.0 | 1.00 | 1455 | 0.0 |
| 26 | Hwang, Siwoo | 0 | KOR | −9N | +13B | −16N | F | F | F | 1.0 | 8.0 | 8.0 | 3.00 | 840 | 0.0 |
| 27 | Kwak, Jeonghwan | 1561 | KOR | +13N | −15B | −19N | F | F | F | 1.0 | 7.5 | 7.5 | 3.00 | 953 | -10.0 |
| 28 | Shin, Dongeun | 1540 | KOR | −6N | −19B | +29N | F | F | F | 1.0 | 6.5 | 6.5 | 0.50 | 912 | -11.2 |
| 29 | FIDE 13230719 | 0 | — | −2B | =31N | −28B | −20N | −11N | −?B | 0.5 | 11.0 | 11.0 | 0.25 | 779 | 0.0 |
| 30 | Lee, Hajin A | 1469 | KOR | F | F | F | =23B | −21N | −18N | 0.5 | 5.5 | 5.5 | 0.75 | 1522 | +2.0 |
| 31 | Park, Junewoo | 0 | KOR | −16N | =29B | −22N | F | F | F | 0.5 | 4.0 | 4.0 | 0.25 | 734 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Baek, DongyeopKOR+111.26.0 pts · #1
- 2Bae, JaeminKOR+49.23.0 pts · #14
- 3Zee, HyeonjeongKOR+27.64.0 pts · #3
Top rating losers
- 1Chae, HosungKOR-68.02.5 pts · #6
- 2Kim, Taehyun AKOR-56.02.0 pts · #28
- 3Seo, YerinKOR-40.01.0 pts · #27
Biggest upsets
- R5+207 Elo gap
- R2+105 Elo gap