Choi's Standard Event U1800 2025 Winter
Open SwissStandard
29 players participated in this 5-round tournament, held from 20 Dec 2025 to 21 Dec 2025 in Seongnam, South Korea. Top 10 Elo average was 1709, and top seed was Dongseob Lee (🇰🇷 KOR, 1784).
Taewoo D Kim (🇰🇷 KOR, 1725) won with 4.5/5, ahead of Taewoo Kim (4.0) and Jihoon Kim (4.0). Kim won solo starting round 4.
The biggest upset came in round 4: Haseong Son (1530) beat Kwansoo Kim (1694), a +164-point gap.
Location
🇰🇷Seongnam, South Korea
Dates
20 Dec 2025 → 21 Dec 2025
Time control
Standard: All Moves in 60 Min. Incr. 10 Sec. / /
System
Swiss · 5 rounds
Federations · 1 represented
🇰🇷South Korea×18
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 5 roundsTaewoo D Kim led from R4; +0.5-point edge over the runner-up.
Co-leaders
11
4
2
1
1
R4–R5 · LEAD HELD
Taewoo D Kim held the sole lead from R4 through R5 without losing it.
R5 · HEAD-TO-HEAD · WINNER VS 2ND
Taewoo D Kim drew with Taewoo Kim (Black).
WIN STREAKS · 2 top finishers
Taewoo D Kim 4 wins (R1–R4)Jihoon Kim 3 wins (R1–R3)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Taewoo D Kim | * | ½ | 1 | — |
| 2Taewoo Kim | ½ | * | — | — |
| 3Jihoon Kim | 0 | — | * | — |
| 4Minjae Kim | — | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Kim, Taewoo D | 1725 | KOR | +18N | +5B | +4N | +3B | =2N | 4.5 | 14.0 | 15.5 | 13.50 | 1946 | +16.0 |
| 2 | Kim, Taewoo | 1765 | KOR | +8N | =6B | +19N | +10B | =1B | 4.0 | 13.0 | 14.5 | 10.75 | 1884 | +24.0 |
| 3 | Kim, Jihoon | 1683 | KOR | +29N | +7B | +14N | −1N | +4B | 4.0 | 12.5 | 12.5 | 8.00 | 1772 | +14.8 |
| 4 | Yun, Junseo | 0 | KOR | +27B | +20N | −1B | +5B | −3N | 3.0 | 12.5 | 12.5 | 4.00 | 1534 | 0.0 |
| 5 | Lee, Seohan | 1615 | KOR | +13B | −1N | +12B | −4N | +10N | 3.0 | 12.0 | 14.0 | 6.50 | 1684 | +11.6 |
| 6 | Lee, Juhwan | 1676 | KOR | +12B | =2N | −10B | +18N | =11B | 3.0 | 11.0 | 12.5 | 6.75 | 1605 | -10.4 |
| 7 | Son, Haseong | 1530 | KOR | +24B | −3N | +13B | +14B | −9N | 3.0 | 11.0 | 12.0 | 5.00 | 1588 | +8.4 |
| 8 | Choe, Yujin | 0 | KOR | −2B | −12N | +21B | +13N | +15B | 3.0 | 10.0 | 11.0 | 5.00 | 964 | 0.0 |
| 9 | Kim, Minjae | 1776 | KOR | F | F | +26B | +17N | +7B | 3.0 | 5.5 | 5.5 | 5.50 | 2304 | +10.6 |
| 10 | Lee, Kwanhoo | 1645 | KOR | +25N | =19B | +6N | −2N | −5B | 2.5 | 11.5 | 12.5 | 4.75 | 1639 | -1.2 |
| 11 | Lee, Dongseob | 1784 | KOR | F | F | +28N | +16B | =6N | 2.5 | 5.0 | 5.0 | 3.50 | 1818 | +1.8 |
| 12 | FIDE 13232908 | 0 | — | −6N | +8B | −5N | −15B | +20N | 2.0 | 11.0 | 12.0 | 4.00 | 824 | 0.0 |
| 13 | Shin, Hyeongseop | 0 | KOR | −5N | +18B | −7N | −8B | +28N | 2.0 | 10.5 | 10.5 | 1.50 | 754 | 0.0 |
| 14 | Kim, Kwansoo | 1694 | KOR | +22B | +16N | −3B | −7N | F | 2.0 | 10.0 | 10.0 | 3.00 | 1471 | -17.4 |
| 15 | FIDE 13238043 | 0 | — | −16B | −22N | +20B | +12N | −8N | 2.0 | 8.0 | 9.0 | 3.00 | 778 | 0.0 |
| 16 | Lee, Jaeun | 1578 | KOR | +15N | −14B | F | −11N | +21B | 2.0 | 7.5 | 7.5 | 3.00 | 935 | -23.6 |
| 17 | Kim, Siwon | 1492 | KOR | F | F | +23N | −9B | +26N | 2.0 | 4.5 | 4.5 | 1.50 | 1628 | +12.4 |
| 18 | FIDE 13235630 | 0 | — | −1B | −13N | +27B | −6B | =23N | 1.5 | 10.5 | 10.5 | 0.50 | 897 | 0.0 |
| 19 | Jung, Jinuk | 1727 | KOR | +20B | =10N | −2B | F | F | 1.5 | 7.5 | 7.5 | 2.25 | 1511 | -11.2 |
| 20 | FIDE 13234200 | 0 | — | −19N | −4B | −15N | +27N | −12B | 1.0 | 8.5 | 8.5 | 0.00 | 927 | 0.0 |
| 21 | FIDE 13237942 | 0 | — | F | F | −8N | +28B | −16N | 1.0 | 5.0 | 5.0 | 0.00 | 778 | 0.0 |
| 22 | FIDE 13238213 | 0 | — | −14N | +15B | F | F | F | 1.0 | 4.0 | 4.0 | 2.00 | 888 | 0.0 |
| 23 | FIDE 13238280 | 0 | — | F | F | −17B | =26N | =18B | 1.0 | 4.0 | 4.0 | 1.00 | 1297 | 0.0 |
| 24 | FIDE 13237659 | 0 | — | −7N | +29B | F | F | F | 1.0 | 3.0 | 3.0 | 0.00 | 731 | 0.0 |
| 25 | Lee, Hanjo | 0 | KOR | −10B | +27N | F | F | F | 1.0 | 2.5 | 2.5 | 0.00 | 844 | -10.0 |
| 26 | Jea, Daeul | 1482 | KOR | F | F | −9N | =23B | −17B | 0.5 | 6.0 | 6.0 | 0.50 | 835 | -25.6 |
| 27 | FIDE 13237950 | 0 | — | −4N | −25B | −18N | −20B | F | 0.0 | 6.5 | 6.5 | 0.00 | 654 | 0.0 |
| 28 | FIDE 13237764 | 0 | — | F | F | −11B | −21N | −13B | 0.0 | 5.5 | 5.5 | 0.00 | 982 | 0.0 |
| 29 | FIDE 13238000 | 0 | — | −3B | −24N | F | F | F | 0.0 | 5.0 | 5.0 | 0.00 | 878 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Kim, TaewooKOR+24.04.0 pts · #1
- 2Kim, Taewoo DKOR+16.04.5 pts · #4
- 3Kim, JihoonKOR+14.84.0 pts · #5
Top rating losers
- 1Jea, DaeulKOR-25.60.5 pts · #28
- 2Lee, JaeunKOR-23.62.0 pts · #25
- 3Kim, KwansooKOR-17.42.0 pts · #8
Biggest upsets
- R4+164 Elo gap