Format
MJ
Mostertman, Johan
🇳🇱FIDE 1029185· Male· Netherlands· Born in 1943
Follow Johan MostertmanTrack his monthly FIDE ratings, games, tournaments and more.
Johan Mostertman, a 83-year-old Dutch player, is rated 1744. He has slipped back 62 Elo over the past 12 months. 34 rated games in the past year (≈14/year long-term). Recent standard appearances include Weekendtoernooi Groninger Combinatie NOSBO PK 2026, 27. NordWest-Cup Open B, and Tata Steel Chess 2026 - Dagvierkampen. He took a 56-month break between Dec 2018 and Sep 2023 (COVID-19 included). His peak of 1889 was reached at age 73 (Feb 2016).
Current rating
1744
Standard
Rpd—·Blz—
All-time high
1889
−145 pts below
Feb 2016 · age 73
Feb 2016 · age 73
Activity
20
games / yr avg. · ≈2/mo
30 past 12 mo · ≈3/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#94,634
#94,634 · players worldwide · of 218,279
Career timeline
15 entries2024
28th Dutch 80+ player
at age 81 · rated 1846
Aug 2024
Re-crossed 1800
at age 81
Mar 2024
2019
31st Dutch 75-80 player
at age 76 · rated 1763
Nov 2019
2018
Inactive for 56 months
paused at 1763 → returned at 1741
Dec 2018
2016
45th Dutch 70-75 player
at age 73 · rated 1887
Dec 2016
All-time peak 1889
at age 73 · −145 from today
Feb 2016
Standard rating history
Peak
FIDE title
Threshold
First rated
Inactive period
COVID-19
FIDE recal.
Activity & highlights
Top opponent
Evolution
-38
1782 → 1744
Tournaments
6
35 games
Score
18/ 3551.4%
13W10D12L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
6 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Open Swiss | May 2026 | 3/6 | #62 | 1853 | +7.6 |
Open Swiss | Jan 2026 | 4.5/7 | #23 | 1799 | +11.6 |
Round-Robin | Jan 2026 | 2/1 | #324 | 2488 | -11.8 |
Swiss | Dec 2025 | 1/3 | #45 | 1704 | -14.0 |
Open Swiss | Sep 2025 | 3.5/5 | #54 | 1814 | -12.0 |
Open Swiss | Jul 2025 | 4/8 | #118 | 1683 | -20.0 |
Worst Elo result: 34th OPEN CHESS TOURNAMENT OF KAVALA VASILIS THEODORIDIS B (-20.0 Elo, finished #118).
Rankings
/
Netherlands
#3,615
out of 4,909 players
Europe
#67,486
in continent
World
#94,632
out of 400,000+
National ranking
Europe & World
Europe
World
Netherlands
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