3rd YCF Presidential Cup - B
Open SwissStandard
23 players participated in this 4-round tournament, held on 19 Apr 2026 in Incheon, South Korea. Top 10 Elo average was 926, and top seed was Taeoh Lee (🇰🇷 KOR, 1697).
Siwoo D Park (🇰🇷 KOR, 1529) won with 4.0/4, ahead of Hawon Seo (3.5) and Jeongyun Oh (3.5). Park broke clear in the final round.
The biggest upset came in round 4: Siwoo D Park (1529) beat Taeoh Lee (1697), a +168-point gap.
Location
🇰🇷Incheon, South Korea
Dates
19 Apr 2026
Time control
Standard: 60 minutes for game
System
Swiss · 4 rounds
Federations · 1 represented
🇰🇷South Korea×6
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 4 roundsSiwoo D Park led from R4; +0.5-point edge over the runner-up.
Co-leaders
17
8
4
1
R4–R4 · LEAD HELD
Siwoo D Park held the sole lead from R4 through R4 without losing it.
WIN STREAKS · 3 top finishers
Siwoo D Park 4 wins (R1–R4)Hawon Seo 3 wins (R1–R3)Jeongyun Oh 3 wins (R1–R3)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Siwoo D Park | * | — | — | 1 |
| 2Hawon Seo | — | * | ½ | — |
| 3Jeongyun Oh | — | ½ | * | — |
| 4Taeoh Lee | 0 | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Park, Siwoo D | 1529 | KOR | +10N | +13B | +11N | +4N | 4.0 | 7.0 | 9.0 | 9.00 | 2497 | +28.8 |
| 2 | Seo, Hawon | 1452 | KOR | +19N | +9B | +5N | =3B | 3.5 | 8.5 | 9.5 | 7.75 | 1755 | +32.0 |
| 3 | Oh, Jeongyun | 1541 | KOR | +22B | +18N | +8B | =2N | 3.5 | 7.5 | 8.5 | 6.75 | 1452 | -4.8 |
| 4 | Lee, Taeoh | 1697 | KOR | +23N | +7B | +6N | −1B | 3.0 | 10.0 | 10.0 | 6.00 | 1496 | -20.4 |
| 5 | Kwak, Doyun | 1582 | KOR | +16B | +21N | −2B | +12N | 3.0 | 7.5 | 8.5 | 5.00 | 652 | -27.2 |
| 6 | Park, Jaemin A | 1463 | KOR | +15N | +14B | −4B | +10N | 3.0 | 7.0 | 9.0 | 6.00 | 897 | -8.4 |
| 7 | FIDE 13238361 | 0 | — | +?N | −4N | +20B | +9B | 3.0 | 6.0 | 6.0 | 3.00 | 897 | 0.0 |
| 8 | FIDE 13238353 | 0 | — | +?N | +?B | −3N | +11B | 3.0 | 5.5 | 5.5 | 2.00 | 1545 | 0.0 |
| 9 | FIDE 13239520 | 0 | — | +12B | −2N | +18B | −7N | 2.0 | 8.5 | 9.5 | 3.00 | 652 | 0.0 |
| 10 | FIDE 13237837 | 0 | — | −1B | +?N | +21B | −6B | 2.0 | 8.0 | 8.0 | 1.00 | 696 | 0.0 |
| 11 | FIDE 14258005 | 0 | — | +?B | +?N | −1B | −8N | 2.0 | 7.0 | 7.0 | 0.00 | 729 | 0.0 |
| 12 | FIDE 13238264 | 0 | — | −9N | +19B | +?N | −5B | 2.0 | 6.0 | 6.0 | 1.00 | 782 | 0.0 |
| 13 | FIDE 13237802 | 0 | — | +?B | −1N | −?B | +20N | 2.0 | 5.0 | 5.0 | 1.00 | 729 | 0.0 |
| 14 | FIDE 13238248 | 0 | — | +?N | −6N | −17B | +?B | 2.0 | 5.0 | 5.0 | 0.00 | 663 | 0.0 |
| 15 | FIDE 13240781 | 0 | — | −6B | −?N | +?B | +18N | 2.0 | 4.0 | 4.0 | 1.00 | 663 | 0.0 |
| 16 | FIDE 13239953 | 0 | — | −5N | +?B | −?B | +?N | 2.0 | 3.0 | 3.0 | 0.00 | 782 | 0.0 |
| 17 | FIDE 13240773 | 0 | — | +?N | −?B | +14N | −?B | 2.0 | 2.0 | 2.0 | 2.00 | 749 | 0.0 |
| 18 | FIDE 13237829 | 0 | — | +?N | −3B | −9N | −15B | 1.0 | 7.5 | 7.5 | 0.00 | 741 | 0.0 |
| 19 | FIDE 13240706 | 0 | — | −2B | −12N | −?N | +?B | 1.0 | 5.5 | 5.5 | 0.00 | 652 | 0.0 |
| 20 | FIDE 13237845 | 0 | — | −?N | +?B | −7N | −13B | 1.0 | 5.0 | 5.0 | 0.00 | 749 | 0.0 |
| 21 | FIDE 13237861 | 0 | — | +?N | −5B | −10N | −?B | 1.0 | 5.0 | 5.0 | 0.00 | 782 | 0.0 |
| 22 | FIDE 13240447 | 0 | — | −3N | +?B | −?N | −?B | 1.0 | 3.5 | 3.5 | 0.00 | 745 | 0.0 |
| 23 | FIDE 13240684 | 0 | — | −4B | −?N | −?B | −?N | 0.0 | 3.0 | 3.0 | 0.00 | 897 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Seo, HawonKOR+32.03.5 pts · #1
- 2Park, Siwoo DKOR+28.84.0 pts · #3
- 3FIDE 132378020.02.0 pts · #20
Top rating losers
- 1Kwak, DoyunKOR-27.23.0 pts · #19
- 2Lee, TaeohKOR-20.43.0 pts · #2
- 3Park, Jaemin AKOR-8.43.0 pts · #23
Biggest upsets
- R4+168 Elo gap
- R3+130 Elo gap