Format
BJ
Bosma, Jan
🇳🇱FIDE 1046837· Male· Netherlands· Born in 2000
Follow Jan BosmaTrack his monthly FIDE ratings, games, tournaments and more.
Jan Bosma, a 26-year-old Dutch player, is rated 1946 — just 20 short of his peak of 1966 (Mar 2024, age 24). He plays occasionally (5 games in the last 12 months) and took a 19-month break between Mar 2024 and Nov 2025. Recent appearance: Amsterdam Chess Open 2025 Group A.
At junior level, he reached #26, #30 and #35 nationally in U20, U18 and U16.
Current rating
1946
Standard
Rpd—·Blz—
All-time high
1966
−20 pts below
Mar 2024 · age 24
Mar 2024 · age 24
Activity
2
games / yr avg.
5 past 12 mo
classical only
Occasional
classical only
Occasional
Signature stat
#37,531
#37,531 · players worldwide · of 216,808
Career timeline
10 entries2024
All-time peak 1966
at age 24 · −20 from today
Mar 2024
Inactive for 19 months
paused at 1966 → returned at 1946
Mar 2024
2020
26th Dutch U20 player
at age 20 · rated 1895
Oct 2020
2019
Best 12-month gain (+168 Elo)
1699 → 1867
Apr 2019
K-factor lowered to 20
at age 19
Jan 2019
2018
30th Dutch U18 player
at age 18 · rated 1841
Dec 2018
Standard rating history
Last 12 months — activity & highlights
Evolution
-20
1966 → 1946
Tournaments
1
6 games
Score
1.5/ 625.0%
1W1D4L
Top 1 win
Top 3 losses
Last 12 months — tournaments
1 event| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Open Swiss | Oct 2025 | 1.5/5 | #93 | 1967 | -20.4 |
Rankings
/
Netherlands
#1,599
out of 4,901 players
Europe
#27,748
in continent
World
#37,531
out of 400,000+
National ranking
Europe & World
Europe
World
Netherlands
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