1st SeongdoGu Chess Competition
Open SwissStandard
36 players participated in this 4-round tournament, held on 22 Nov 2025 in SeongdongGu, South Korea. Top 10 Elo average was 1652, and top seed was Donghyun C Lee (🇰🇷 KOR, 1732).
Taewoo Kim (🇰🇷 KOR, 1725) won with 4.0/4, ahead of Yunseo Lee (3.0) and Sunwoo Noh (3.0). Kim broke clear in the final round.
Location
🇰🇷SeongdongGu, South Korea
Dates
22 Nov 2025
Time control
Standard: All Moves in 55 Min. Incr. 5 Sec. / /
System
Swiss · 4 rounds
Federations · 1 represented
🇰🇷South Korea×29
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 4 roundsTaewoo Kim led from R4; +1.0-point edge over the runner-up.
Co-leaders
19
9
4
1
R4–R4 · LEAD HELD
Taewoo Kim never relinquished the lead after R4; final gap +1.0 over the runner-up.
R4 · HEAD-TO-HEAD · WINNER VS 2ND
Taewoo Kim beat Yunseo Lee (White).
WIN STREAKS · 3 top finishers
Taewoo Kim 4 wins (R1–R4)Yunseo Lee 3 wins (R1–R3)Donghyun C Lee 3 wins (R1–R4)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Taewoo Kim | * | 1 | — | — |
| 2Yunseo Lee | 0 | * | — | — |
| 3Donghyun C Lee | — | — | * | — |
| 4Sangwon Roh | — | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Kim, Taewoo | 1725 | KOR | +26N | +31B | +19N | +2B | 4.0 | 6.0 | 7.0 | 7.00 | 2396 | +39.2 |
| 2 | Lee, Yunseo | 1643 | KOR | +22B | +21N | +10B | −1N | 3.0 | 8.5 | 10.5 | 6.50 | 1703 | +10.4 |
| 3 | Noh, Sunwoo | 1588 | KOR | +34B | +8N | +13B | −4N | 3.0 | 8.5 | 8.5 | 5.50 | 1616 | +3.2 |
| 4 | Giordmaina, Wayne | 1605 | KOR | +20N | +17B | −5N | +3B | 3.0 | 8.0 | 10.0 | 7.00 | 1652 | +5.2 |
| 5 | Roh, Sangwon | 1715 | KOR | +25B | +9N | +4B | F | 3.0 | 7.0 | 7.0 | 7.00 | 2373 | +24.8 |
| 6 | Lee, Donghyun C | 1732 | KOR | +23B | +11N | F | +21N | 3.0 | 6.5 | 6.5 | 6.50 | 2294 | +8.2 |
| 7 | Baek, Isu | 1696 | KOR | −17N | +30B | +20N | +18B | 3.0 | 6.0 | 7.0 | 5.00 | 2309 | +9.6 |
| 8 | FIDE 13237110 | 0 | — | +24N | −3B | +26N | +27B | 3.0 | 5.5 | 6.5 | 3.50 | 1519 | 0.0 |
| 9 | Son, Haseong | 1541 | KOR | +14N | −5B | +28N | =16B | 2.5 | 8.0 | 9.0 | 4.75 | 917 | -10.8 |
| 10 | Lee, Yeonho | 1568 | KOR | +28N | +16B | −2N | =12B | 2.5 | 8.0 | 9.0 | 4.75 | 839 | -16.0 |
| 11 | Son, Joohyuk | 1547 | KOR | +32B | −6B | +17N | =15N | 2.5 | 7.5 | 8.0 | 3.75 | 933 | -10.4 |
| 12 | Oh, Seonghyun | 0 | KOR | +18N | −19B | +27N | =10N | 2.5 | 6.5 | 7.5 | 4.25 | 1556 | 0.0 |
| 13 | Bok, Junggyu | 1629 | KOR | +29N | +27B | −3N | =14B | 2.5 | 6.5 | 7.5 | 3.25 | 1519 | -5.8 |
| 14 | Lee, Taewon | 0 | KOR | −9B | +25N | +?B | =13N | 2.5 | 6.5 | 6.5 | 2.75 | 1566 | 0.0 |
| 15 | FIDE 13237152 | 0 | — | −27N | +29B | +24N | =11B | 2.5 | 5.0 | 6.0 | 3.75 | 1306 | 0.0 |
| 16 | Nam, Wonwoo | 0 | KOR | +?B | −10N | +?B | =9N | 2.5 | 5.0 | 5.0 | 1.25 | 1550 | 0.0 |
| 17 | Kim, Jungha | 0 | KOR | +7B | −4N | −11B | +28N | 2.0 | 8.5 | 9.5 | 4.00 | 1495 | 0.0 |
| 18 | Kwak, Yeseong | 1493 | KOR | −12B | +34N | +22B | −7N | 2.0 | 7.5 | 7.5 | 2.00 | 911 | -9.6 |
| 19 | Lee, Doil | 1615 | KOR | +33B | +12N | −1B | F | 2.0 | 7.0 | 7.0 | 3.00 | 925 | -14.0 |
| 20 | Lee, Jungyeon | 0 | KOR | −4B | +?N | −7B | +26B | 2.0 | 7.0 | 7.0 | 1.00 | 1474 | 0.0 |
| 21 | Yang, Heewook | 1444 | KOR | +35N | −2B | +30N | −6B | 2.0 | 7.0 | 7.0 | 1.00 | 886 | -15.6 |
| 22 | Kim, Rayon | 0 | KOR | −2N | +35B | −18N | +30B | 2.0 | 6.0 | 6.0 | 1.00 | 774 | 0.0 |
| 23 | Hwang, Seungjae | 0 | KOR | −6N | −28B | +33N | +29B | 2.0 | 5.0 | 5.5 | 1.50 | 933 | 0.0 |
| 24 | Cho, Eunjun | 0 | KOR | −8B | +32N | −15B | =?N | 1.5 | 6.0 | 6.0 | 0.50 | 1528 | 0.0 |
| 25 | Kang, Jiann | 0 | KOR | −5N | −14B | =?N | +?B | 1.5 | 5.5 | 5.5 | 0.00 | 1580 | 0.0 |
| 26 | FIDE 13236962 | 0 | — | −1B | +36N | −8B | −20N | 1.0 | 9.0 | 9.0 | 0.00 | 925 | 0.0 |
| 27 | Choi, Gyungsook | 1450 | KOR | +15B | −13N | −12B | −8N | 1.0 | 8.0 | 10.5 | 2.50 | 827 | -5.4 |
| 28 | FIDE 13204858 | 0 | — | −10B | +23N | −9B | −17B | 1.0 | 7.0 | 9.0 | 2.00 | 755 | 0.0 |
| 29 | Kim, Yejun A | 0 | KOR | −13B | −15N | +32B | −23N | 1.0 | 7.0 | 7.5 | 0.50 | 827 | 0.0 |
| 30 | Park, Yoojun | 0 | KOR | +?B | −7N | −21B | −22N | 1.0 | 7.0 | 7.0 | 0.00 | 1420 | 0.0 |
| 31 | Ahn, Taehyun | 1536 | KOR | +36B | −1N | F | F | 1.0 | 4.0 | 4.0 | 0.00 | 925 | -10.0 |
| 32 | Lee, Sion | 0 | KOR | −11N | −24B | −29N | =33B | 0.5 | 5.0 | 5.5 | 0.25 | 746 | 0.0 |
| 33 | FIDE 13235745 | 0 | — | −19N | −?N | −23B | =32N | 0.5 | 4.5 | 4.5 | 0.25 | 772 | 0.0 |
| 34 | Lee, Junseong | 0 | KOR | −3N | −18B | F | F | 0.0 | 5.0 | 5.0 | 0.00 | 748 | 0.0 |
| 35 | FIDE 13235796 | 0 | — | −21B | −22N | F | F | 0.0 | 4.0 | 4.0 | 0.00 | 641 | 0.0 |
| 36 | FIDE 13236954 | 0 | — | −31N | −26B | F | F | 0.0 | 2.0 | 2.0 | 0.00 | 733 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Kim, TaewooKOR+39.24.0 pts · #1
- 2Roh, SangwonKOR+24.83.0 pts · #6
- 3Lee, YunseoKOR+10.43.0 pts · #4
Top rating losers
- 1Lee, YeonhoKOR-16.02.5 pts · #36
- 2Yang, HeewookKOR-15.62.0 pts · #22
- 3Lee, DoilKOR-14.02.0 pts · #32