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Lee, Seojun B

🇰🇷

FIDEFIDE 13209329· Male· South Korea· Born in 2007

Follow Seojun B LeeTrack his monthly FIDE ratings, games, tournaments and more.

Seojun B Lee, a 19-year-old South Korean player, is rated 1628 — just 10 short of his peak of 1638 (Mar 2026, age 19). He is rising rapidly, having gained +121 Elo over the past 12 months. 21 rated games in the past year (≈5/year long-term). Recent standard appearances include 33rd Korea Chess League Division 1 Round 5-6, 33rd Korea Chess League Division 1 Round 3-4, and 34th LSH Tournament. Also played 1 rapid (including 1st Cheonan Int'l Youth Chess Festival - Rapid) and 3 blitz events (including 1st Cheonan Int'l Youth Chess Festival - Blitz) recently. He took a 67-month break between Dec 2019 and Aug 2025 (COVID-19 included).

At junior level, he reached #26, #28, #22 and #26 nationally in U20, U18, U14 and U12.

Current rating

1628

Standard

Rpd1637·Blz1465

All-time high

1638

−10 pts below
Mar 2026 · age 19

Activity

7

games / yr avg. · ≈1/mo

21 past 12 mo · ≈2/mo
classical only
Occasional

Signature stat

#136,398

#136,398 · players worldwide · of 218,279

Career timeline

12 entries
2026
26th South Korean U20 player
at age 19 · rated 1629
May 2026
Best 12-month gain (+131 Elo)
1507 → 1638
Mar 2026
All-time peak 1638
at age 19 · −10 from today
Mar 2026
K-factor lowered to 20
at age 19
Feb 2026
Crossed 1600
at age 19
Jan 2026
2025
28th South Korean U18 player
at age 18 · rated 1505
Dec 2025

Standard rating history

Peak
FIDE title
Threshold
First rated
Inactive period
COVID-19
FIDE recal.

Activity & highlights

Best result
Via U1800 December
perf 1958 (+340) · 4/5 · #3
Top opponent
vs Jeongyeon Lee 1,898
9th Gritchess Standard Match · Jan 2026 · +16.4 Elo
Evolution
+121
1507 → 1628
Tournaments
8
30 games
Score
16/ 3053.3%
14W4D12L
Top 3 wins
1.[W]vsEram Joo1,781·Via U1800 December·R1·+28.8
2.[W]vsJinuk Jung1,727·Via U1800 December·R3·+26.1
3.[W]vsSeungyu Kim1,542·26th LSH Open·R5·+22.1
Top 3 losses
1.[L]vsJaemin Bae1,548·26th LSH Open·R6·-17.5
2.[L]vsJaeha Kim1,625·34th LSH Tournament·R3·-10.4
3.[L]vsKwansoo Kim1,674·9th Gritchess Standard Match·R6·-8.9

Last 12 months — tournaments

8 events
EventDateScoreRankPerfΔ Elo
33rd Korea Chess League Division 1 Round 7-8
Team
May 20260.5/2#271614-0.8
33rd Korea Chess League Division 1 Round 5-6
Team
Apr 20261/2#171774+7.6
33rd Korea Chess League Division 1 Round 3-4
Team
Mar 20260/2#291068-8.2
34th LSH Tournament
Swiss
Feb 20264/2#72354-4.2
9th Gritchess Standard Match
Swiss
Jan 20262.5/5#211755+15.6
Via U1800 December
Open Swiss
Dec 20254/5#31958+113.2
26th LSH Open
Swiss
Jul 20252/2#172345+3.6
5th Gritchess standard Match
Open Swiss
Jun 20252/1#272593-6.4

Rankings

/
South Korea
#272
out of 718 players
Asia-Pacific
#20,961
in continent
World
#136,390
out of 400,000+

National ranking

Europe & World

Europe
World
South Korea
1
🇰🇷Lee, JunhyeokFollow Junhyeok LeeTrack their monthly FIDE ratings, games, tournaments and more.
2,398
2
🇰🇷Ahn, HongjinFollow Hongjin AhnTrack their monthly FIDE ratings, games, tournaments and more.
2,336
3
🇰🇷Kwon, SehyunFollow Sehyun KwonTrack their monthly FIDE ratings, games, tournaments and more.
2,286
4
🇰🇷Yun, HungiFollow Hungi YunTrack their monthly FIDE ratings, games, tournaments and more.
2,214
5
🇰🇷Rentsen, ErdenetulgaFollow Erdenetulga RentsenTrack their monthly FIDE ratings, games, tournaments and more.
2,182
6
🇰🇷Huh, IsaakFollow Isaak HuhTrack their monthly FIDE ratings, games, tournaments and more.
2,174
7
🇰🇷Lee, KyungseokFollow Kyungseok LeeTrack their monthly FIDE ratings, games, tournaments and more.
2,111
8
🇰🇷Gu, InjungFollow Injung GuTrack their monthly FIDE ratings, games, tournaments and more.
2,077
9
🇰🇷Eynula, RozaFollow Roza EynulaTrack her monthly FIDE ratings, games, tournaments and more.
2,048
10
🇰🇷Lee, YounggyuFollow Younggyu LeeTrack their monthly FIDE ratings, games, tournaments and more.
2,045
...
272🇰🇷Lee, Seojun B1,628
Asia-Pacific
1
🇺🇿Abdusattorov, NodirbekFollow Nodirbek AbdusattorovTrack their monthly FIDE ratings, games, tournaments and more.
2,777
1
🇺🇿Sindarov, JavokhirFollow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more.
2,777
3
🇮🇳Erigaisi ArjunFollow Erigaisi ArjunTrack their monthly FIDE ratings, games, tournaments and more.
2,761
4
🇨🇳Wei, YiFollow Yi WeiTrack their monthly FIDE ratings, games, tournaments and more.
2,753
5
🇮🇳Anand, ViswanathanFollow Viswanathan AnandTrack their monthly FIDE ratings, games, tournaments and more.
2,739
6
🇨🇳Ding, LirenFollow Liren DingTrack their monthly FIDE ratings, games, tournaments and more.
2,738
7
🇮🇳Praggnanandhaa RFollow Praggnanandhaa RTrack their monthly FIDE ratings, games, tournaments and more.
2,735
8
🇷🇺Nepomniachtchi, IanFollow Ian NepomniachtchiTrack their monthly FIDE ratings, games, tournaments and more.
2,733
9
🇮🇳Gukesh DFollow Gukesh DTrack their monthly FIDE ratings, games, tournaments and more.
2,732
10
🇻🇳Le, Quang LiemFollow Quang Liem LeTrack their monthly FIDE ratings, games, tournaments and more.
2,731
...
20961🇰🇷Lee, Seojun B1,628
World
1
🇳🇴Carlsen, MagnusFollow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more.
2,841
2
🇺🇸Nakamura, HikaruFollow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more.
2,792
2
🇺🇸Caruana, FabianoFollow Fabiano CaruanaTrack their monthly FIDE ratings, games, tournaments and more.
2,792
4
🇺🇿Abdusattorov, NodirbekFollow Nodirbek AbdusattorovTrack their monthly FIDE ratings, games, tournaments and more.
2,777
4
🇺🇿Sindarov, JavokhirFollow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more.
2,777
6
🇩🇪Keymer, VincentFollow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more.
2,767
7
🇳🇱Giri, AnishFollow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more.
2,764
8
🇮🇳Erigaisi ArjunFollow Erigaisi ArjunTrack their monthly FIDE ratings, games, tournaments and more.
2,761
9
🇺🇸So, WesleyFollow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more.
2,753
9
🇨🇳Wei, YiFollow Yi WeiTrack their monthly FIDE ratings, games, tournaments and more.
2,753
...
136390🇰🇷Lee, Seojun B1,628