Format
Heidenfeld, Mark
IM🇮🇪FIDE 2500990· Male· Ireland· Born in 1968
Follow Mark HeidenfeldTrack his monthly FIDE ratings, games, tournaments and more.
Mark Heidenfeld, a 58-year-old Irish International Master, is rated 2296 and ranked 11th among Irish players, and in the top 2% worldwide. He plays occasionally (8 games in the last 12 months). Recent appearances: Dun Laoghaire Chess club 50th anniversary Championship of Champions and Oberliga Wuerttemberg 2025-2026 September 2025. His peak of 2403 was reached at age 33 (Apr 2001, Irish #3 at the time); he spent 45 months in Irish top 5.
Awarded IM in 2001 (age 33).
Current rating
2296
Standard
Rpd2367·Blz2298
All-time high
2403
−107 pts below
Apr 2001 · age 33
Apr 2001 · age 33
Activity
7
games / yr avg. · ≈1/mo
8 past 12 mo · ≈1/mo
classical only
Occasional
classical only
Occasional
Signature stat
#11
#11 · Irish players · of 939
45 months in National top 5 (2001–2023)
45 months in National top 5 (2001–2023)
Career timeline
16 entries2025
2nd Irish 55-60 player
at age 57 · rated 2322
Sep 2025
2023
45 months in national top 5
since Jan 2001
Nov 2023
2021
2nd Irish 50-55 player
at age 53 · rated 2368
Dec 2021
2020
Inactive for 17 months
paused at 2360 → returned at 2372
Apr 2020
2014
2nd Irish 45-50 player
at age 46 · rated 2382
Jul 2014
2009
2nd Irish 40-45 player
at age 41 · rated 2371
Nov 2009
Standard rating history
Peak
FIDE title
Threshold
First rated
Inactive period
COVID-19
Activity & highlights
Top opponent
Evolution
-26
2322 → 2296
Tournaments
2
8 games
Score
2.5/ 831.3%
1W3D4L
Top 2 wins
1.[D]vsAlexander BaburinGM2,365·Dun Laoghaire Chess club 50th anniversary Championship of Champions·R4·+1.0
Top 3 losses
3.[L]vsDavid FitzsimonsIM2,286·Dun Laoghaire Chess club 50th anniversary Championship of Champions·R1·-5.1
Last 12 months — tournaments
2 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Round-Robin | Oct 2025 | 2.5/7 | #6 | 2100 | -19.2 |
Team | Sep 2025 | 0/1 | #58 | 1414 | -6.5 |
Worst Elo result: Dun Laoghaire Chess club 50th anniversary Championship of Champions (-19.2 Elo, finished #6).
Most-Played Opponents
vsBernhard SinzFM
🇩🇪GER·2272
+5 −1 =3
9 games·last met Apr 2024
View head-to-head →
vsJosef GhengFM
🇩🇪GER·2169
+1 −2 =4
7 games·last met Apr 2024
View head-to-head →
vsJens HirneiseFM
🇩🇪GER·2366
+2 −4 =1
7 games·last met Feb 2022
View head-to-head →
vsRudolf Wilhelm BraeuningFM
🇩🇪GER·2167
+2 −3 =1
6 games·last met Feb 2022
View head-to-head →
vsGerhard JuneschFM
🇩🇪GER·2241
+2 −1 =3
6 games·last met Aug 2021
View head-to-head →
Rankings
/
Ireland
#11
out of 1,228 players
Europe
#2,849
in continent
World
#4,252
out of 400,000+
National ranking
Europe & World
Europe
World
Ireland
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| 7 | 🇮🇪Follow Adam CollinsTrack their monthly FIDE ratings, games, tournaments and more. | 2,338 |
| 8 | 🇮🇪Follow David FitzsimonsTrack their monthly FIDE ratings, games, tournaments and more. | 2,307 |
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Europe
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| ... | ||
| 2849 | 2,296 | |
World
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| 6 | 🇩🇪Follow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more. | 2,767 |
| 7 | 🇳🇱Follow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more. | 2,764 |
| 8 | 🇮🇳Follow Erigaisi ArjunTrack their monthly FIDE ratings, games, tournaments and more. | 2,761 |
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| ... | ||
| 4252 | 2,296 | |