27th LSH Tournament
Open SwissStandard
19 players participated in this 6-round tournament, held from 26 Jul 2025 to 27 Jul 2025 in Seoul, South Korea. Top 10 Elo average was 1597, and top seed was Junggi Bae (🇰🇷 KOR, 1764).
Jaeheon Chung (🇰🇷 KOR, 1556) won with 5.5/6, ahead of Hosung Chae (5.0) and Yongsu Han (4.5). Chung won solo starting round 4.
The biggest upset came in round 4: Jaeheon Chung (1556) beat Hosung Chae (1755), a +199-point gap.
Location
🇰🇷Seoul, South Korea
Dates
26 Jul 2025 → 27 Jul 2025
Time control
Standard: 60 minutes for game
System
Swiss · 6 rounds
Avg top 10
1,597
Participants
19
Federations · 1 represented
🇰🇷South Korea×15
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 6 roundsJaeheon Chung led from R4; +0.5-point edge over the runner-up.
Co-leaders
6
3
2
1
1
1
R4–R6 · LEAD HELD
Jaeheon Chung held the sole lead from R4 through R6 without losing it.
R4 · HEAD-TO-HEAD · WINNER VS 2ND
Jaeheon Chung beat Hosung Chae (White).
WIN STREAKS · 3 top finishers
Jaeheon Chung 5 wins (R1–R5)Hosung Chae 3 wins (R1–R3)Yongsu Han 3 wins (R2–R4)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Jaeheon Chung | * | 1 | 1 | — |
| 2Hosung Chae | 0 | * | — | — |
| 3Yongsu Han | 0 | — | * | ½ |
| 4Seungwoo Kang | — | — | ½ | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Chung, Jaeheon | 1556 | KOR | +17B | +12N | +5B | +2B | +3N | =11N | 5.5 | 17.0 | 18.0 | 16.75 | 2028 | +44.0 |
| 2 | Chae, Hosung | 1755 | KOR | +18B | +14N | +6B | −1N | +7B | +5N | 5.0 | 16.5 | 17.5 | 12.00 | 1765 | +3.6 |
| 3 | Han, Yongsu | 1703 | KOR | =4N | +13B | +9N | +6B | −1B | +7N | 4.5 | 17.5 | 19.5 | 12.25 | 1726 | +2.2 |
| 4 | Kang, Seungwoo | 0 | KOR | =3B | −5N | +13N | −16B | +19N | +9N | 3.5 | 14.0 | 14.0 | 6.75 | 1603 | 0.0 |
| 5 | Choi, Hyunbin | 1708 | KOR | F | +4B | −1N | +19B | +10N | −2B | 3.0 | 16.5 | 16.5 | 6.00 | 1560 | -14.8 |
| 6 | Song, Yoojun | 1556 | KOR | +15N | +10B | −2N | −3N | +12B | −16B | 3.0 | 16.0 | 18.0 | 6.50 | 1416 | -28.4 |
| 7 | Lee, Jihoon A | 0 | KOR | −14B | +17N | +15N | +10B | −2N | −3B | 3.0 | 16.0 | 17.0 | 5.50 | 1393 | 0.0 |
| 8 | FIDE 13218670 | 0 | — | −10N | −9B | −18B | +?N | +17B | +12N | 3.0 | 9.0 | 9.0 | 3.00 | 679 | 0.0 |
| 9 | Seo, Yerin | 1543 | KOR | −12B | +8N | −3B | =13N | +14N | −4B | 2.5 | 15.0 | 17.0 | 6.00 | 1551 | +1.6 |
| 10 | Lee, Gyumin | 1418 | KOR | +8B | −6N | +12B | −7N | −5B | =13N | 2.5 | 14.0 | 16.0 | 6.00 | 1307 | -16.0 |
| 11 | Yun, Wooseok | 1605 | KOR | F | F | F | +14B | +16N | =1B | 2.5 | 9.5 | 9.5 | 6.75 | 1803 | +28.0 |
| 12 | Lee, Jeongmin | 0 | KOR | +9N | −1B | −10N | +15B | −6N | −8B | 2.0 | 16.5 | 18.5 | 4.50 | 1325 | 0.0 |
| 13 | Yang, Jin | 1479 | KOR | F | −3N | −4B | =9B | +15N | =10B | 2.0 | 15.0 | 15.0 | 4.50 | 1429 | -8.8 |
| 14 | Lee, Junmyeong | 1470 | KOR | +7N | −2B | F | −11N | −9B | +19B | 2.0 | 13.0 | 13.0 | 3.00 | 1408 | -13.2 |
| 15 | FIDE 13229508 | 0 | — | −6B | +18N | −7B | −12N | −13B | +?N | 2.0 | 11.0 | 11.0 | 1.00 | 716 | 0.0 |
| 16 | Kim, Jihun | 1558 | KOR | F | F | F | +4N | −11B | +6N | 2.0 | 9.0 | 9.0 | 6.50 | 1579 | +2.0 |
| 17 | FIDE 13234897 | 0 | — | −1N | −7B | −?N | +?B | −8N | −?B | 1.0 | 11.5 | 11.5 | 0.00 | 862 | 0.0 |
| 18 | FIDE 13234730 | 0 | — | −2N | −15B | +8N | F | F | F | 1.0 | 10.0 | 10.0 | 3.00 | 953 | 0.0 |
| 19 | Lim, Jihyuk | 1508 | KOR | F | F | F | −5N | −4B | −14N | 0.0 | 8.5 | 8.5 | 0.00 | 788 | -31.6 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Chung, JaeheonKOR+44.05.5 pts · #2
- 2Yun, WooseokKOR+28.02.5 pts · #5
- 3Chae, HosungKOR+3.65.0 pts · #3
Top rating losers
- 1Lim, JihyukKOR-31.60.0 pts · #18
- 2Song, YoojunKOR-28.43.0 pts · #11
- 3Lee, GyuminKOR-16.02.5 pts · #14
Biggest upsets
- R4+199 Elo gap
- R3+152 Elo gap
- R5+147 Elo gap