11th Queen's
Open SwissStandard
36 players participated in this 4-round tournament, held on 14 Sept 2025 in Bundang, South Korea. Top 10 Elo average was 1627, and top seed was Mingyu Choi (🇰🇷 KOR, 1783).
Laeho Youn (🇰🇷 KOR, 1578) won with 4.0/4, ahead of Sangwoo Park (4.0) and Hosung Chae (3.0). Youn shared the lead from round 3, winning on tie-break.
The biggest upset came in round 1: Rian Kim (1467) beat Mingyu Choi (1783), a +316-point gap.
Location
🇰🇷Bundang, South Korea
Dates
14 Sept 2025
Time control
Standard: All Moves in 55 Min. Incr. 5 Sec. / /
System
Swiss · 4 rounds
Federations · 1 represented
🇰🇷South Korea×34
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 4 roundsTight race until R4; 2 players tied at 4.0/4, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 2 at the finish.
Co-leaders
18
8
4
2
R4 · TIEBREAK CLUSTER
2 players finish on 4.0/4. Youn takes the title on Buchholz Cut1 (7.5).
WIN STREAKS · 2 top finishers
Sangwoo Park 4 wins (R1–R4)Laeho Youn 4 wins (R1–R4)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Sangwoo Park | * | — | — | — |
| 2Laeho Youn | — | * | 1 | 1 |
| 3Jiwon Kang | — | 0 | * | — |
| 4Hwanseo Lee | — | 0 | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Youn, Laeho | 1578 | KOR | +35N | +25B | +4N | +5N | 4.0 | 7.5 | 7.5 | 7.50 | 2392 | +62.0 |
| 2 | Park, Sangwoo | 0 | KOR | +19N | +28B | +13B | +3N | 4.0 | 7.0 | 8.0 | 8.00 | 1670 | 0.0 |
| 3 | Chae, Hosung | 1652 | KOR | +27N | +10B | +7N | −2B | 3.0 | 10.0 | 11.5 | 7.50 | 2279 | +32.8 |
| 4 | Kang, Jiwon | 1658 | KOR | +17B | +8N | −1B | +11N | 3.0 | 9.5 | 11.5 | 7.50 | 1737 | +16.4 |
| 5 | Lee, Hwanseo | 1661 | KOR | +22N | +14B | +6N | −1B | 3.0 | 9.0 | 11.0 | 7.00 | 1748 | +17.6 |
| 6 | Lee, Juhwan | 1585 | KOR | +32B | +9N | −5B | +17N | 3.0 | 8.0 | 9.0 | 6.00 | 1666 | +12.8 |
| 7 | Kim, Ria | 1508 | KOR | +23N | +16B | −3B | +20N | 3.0 | 7.0 | 9.0 | 6.00 | 1725 | +35.6 |
| 8 | Yang, Junseo | 1568 | KOR | +33N | −4B | +25N | +15B | 3.0 | 6.5 | 7.5 | 4.50 | 1559 | -0.8 |
| 9 | Lee, Donghwa | 1469 | KOR | +30N | −6B | +31N | +14B | 3.0 | 6.0 | 7.0 | 4.00 | 1647 | +23.2 |
| 10 | Ahn, Taehyun | 1508 | KOR | +34B | −3N | +29B | +13N | 3.0 | 6.0 | 6.5 | 3.50 | 1619 | +12.4 |
| 11 | Kim, Gyubeen | 1568 | KOR | +26N | =15B | +24N | −4B | 2.5 | 7.0 | 8.5 | 4.50 | 853 | -15.2 |
| 12 | Lee, Seungyoo | 1498 | KOR | +36B | −13N | +18B | =16N | 2.5 | 6.0 | 6.0 | 3.00 | 1412 | -9.2 |
| 13 | Seol, Youngjun | 1590 | KOR | +31N | +12B | −2N | −10B | 2.0 | 9.5 | 10.5 | 3.50 | 1600 | +2.4 |
| 14 | Lee, Kangin | 1568 | KOR | +18B | −5N | +21B | −9N | 2.0 | 8.0 | 10.0 | 4.00 | 1406 | -25.6 |
| 15 | Jeong, Eunchae | 0 | KOR | +20B | =11N | =16B | −8N | 2.0 | 7.5 | 9.5 | 4.25 | 1571 | 0.0 |
| 16 | Lee, Kunseo | 1626 | KOR | +21B | −7N | =15N | =12B | 2.0 | 7.5 | 9.5 | 4.25 | 1480 | -22.8 |
| 17 | Lim, Siheon | 1446 | KOR | −4N | +33B | +28N | −6B | 2.0 | 7.0 | 8.0 | 2.00 | 1476 | +2.8 |
| 18 | Kim, Choi | 0 | KOR | −14N | +22B | −12N | +28B | 2.0 | 6.5 | 7.5 | 3.00 | 1532 | 0.0 |
| 19 | Han, Jaejun | 1558 | KOR | −2B | −29N | +27N | +31B | 2.0 | 6.5 | 7.5 | 2.50 | 2222 | +25.6 |
| 20 | Seo, Yerin | 1535 | KOR | −15N | +26B | +30N | −7B | 2.0 | 6.5 | 7.5 | 2.50 | 705 | -21.2 |
| 21 | Jang, Seungwoo | 1431 | KOR | −16N | +23B | −14N | +30B | 2.0 | 6.0 | 7.0 | 3.00 | 795 | -11.4 |
| 22 | Cho, Sungjun | 1453 | KOR | −5B | −18N | +34B | +29N | 2.0 | 6.0 | 6.5 | 1.50 | 859 | -11.2 |
| 23 | Seol, Yunseo | 0 | KOR | −7B | −21N | +35B | +34N | 2.0 | 5.5 | 5.5 | 0.50 | 668 | 0.0 |
| 24 | Choi, Mingyu | 1783 | KOR | −25B | +35N | −11B | +32N | 2.0 | 5.0 | 5.0 | 1.00 | 716 | 0.0 |
| 25 | Kim, Rian | 1467 | KOR | +24N | −1N | −8B | =26B | 1.5 | 9.0 | 10.5 | 2.75 | 774 | -28.0 |
| 26 | Jeon, Minjae | 0 | KOR | −11B | −20N | +36B | =25N | 1.5 | 6.0 | 6.0 | 0.75 | 1246 | 0.0 |
| 27 | Choi, Jungho | 1437 | KOR | −3B | =34N | −19B | +35N | 1.5 | 5.5 | 5.5 | 0.25 | 804 | -22.0 |
| 28 | Choi, Yeonwook | 1569 | KOR | +29B | −2N | −17B | −18N | 1.0 | 8.0 | 9.0 | 1.00 | 661 | -26.0 |
| 29 | Choi, Robin | 0 | KOR | −28N | +19B | −10N | −22B | 1.0 | 7.0 | 8.0 | 2.00 | 1337 | 0.0 |
| 30 | Yeo, Seungjun | 0 | KOR | −9B | +32N | −20B | −21N | 1.0 | 7.0 | 8.0 | 1.00 | 686 | 0.0 |
| 31 | Hwang, Siwoo | 1416 | KOR | −13B | +36N | −9B | −19N | 1.0 | 7.0 | 7.0 | 0.00 | 749 | -38.8 |
| 32 | FIDE 13234366 | 0 | — | −6N | −30B | +33N | −24B | 1.0 | 6.0 | 7.0 | 1.00 | 783 | 0.0 |
| 33 | Park, Halyn | 0 | KOR | −8B | −17N | −32B | +36N | 1.0 | 6.0 | 6.0 | 0.00 | 714 | 0.0 |
| 34 | Park, Siyul | 0 | KOR | −10N | =27B | −22N | −23B | 0.5 | 7.0 | 8.5 | 0.75 | 1201 | 0.0 |
| 35 | Cho, Yihwan | 0 | KOR | −1B | −24B | −23N | −27B | 0.0 | 8.0 | 9.5 | 0.00 | 705 | 0.0 |
| 36 | FIDE 13235796 | 0 | — | −12N | −31B | −26N | −33B | 0.0 | 5.0 | 6.0 | 0.00 | 660 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Youn, LaehoKOR+62.04.0 pts · #4
- 2Kim, RiaKOR+35.63.0 pts · #11
- 3Chae, HosungKOR+32.83.0 pts · #5
Top rating losers
- 1Hwang, SiwooKOR-38.81.0 pts · #27
- 2Kim, RianKOR-28.01.5 pts · #33
- 3Choi, YeonwookKOR-26.01.0 pts · #30
Biggest upsets
- R1+316 Elo gap
- R3+215 Elo gap
- R3+123 Elo gap