KNSB FIDE
JA

Jan Ackerman

Rated since January 2023

1746 Classic
1758 Rapid
1758 Blitz

Team Competition

Current teams
Oud Zuylen Utrecht 3
Klasse 5C · 2025-2026 · 6 games
OZU 2
1E · 2025-2026 · 5 games
Past teams
Oud Zuylen Utrecht 3
Klasse 5D · 2024-2025
4 games
OZU 2
2E · 2024-2025
1 game
OZU 3
2D · 2024-2025
7 games
Oud Zuylen Utrecht 2
2D · 2023-2024
3 games
Oud Zuylen Utrecht 3
Klasse 5E · 2023-2024
5 games
Oud Zuylen Utrecht 3
3D · 2023-2024
8 games
Oud Zuylen Utrecht 1
Klasse 3E · 2022-2023
1 game
Oud Zuylen Utrecht 2
Klasse 5D · 2022-2023
1 game
OZU 2
1D · 2022-2023
3 games
OZU 3
3A · 2022-2023
7 games
Oud Zuylen Utrecht 2
Klasse 5C · 2021-2022
7 games
OZU 2
1D · 2021-2022
1 game
OZU 3
3B · 2021-2022
6 games
S.C. Oud Zuylen Utrecht 3
3A · 2019-2020
5 games
S.C. Woerden 3
3A · 2019-2020
1 game
S.C. Oud Zuylen Utrecht 2
1B · 2018-2019
8 games

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
STRAATEN, J. (JASPER) 1919
12051 SOS competitie 2025/2026 Lijst 1 Nov · Tuesday 7 October 2025
BASTEN VAN, G.L. (GIOVANNI) 1852
12775 SOS competitie 2025/2026 Lijst 1 mrt · Tuesday 3 February 2026
GOES, A.J. (AD) 1827
12774 SOS competitie 2025/2026 Lijst 1 feb · Tuesday 20 January 2026
IZAKS, R. (ROB) 1752
12265 KNSB competitie 2025-2026 Klasse 5 ronde 2 · Saturday 1 November 2025
TOORN VAN DER, R. (RICK) 1737
9777 Henk Bloemink Vierkampentoernooi Groep A · Tuesday 17 June 2025
Worst losses
EVERS, H. (HARM) 1724
12410 KNSB competitie 2025-2026 Klasse 5 Ronde 3 · Saturday 22 November 2025
LINGEN VAN, H.G.K. (HENK) 1740
9777 Henk Bloemink Vierkampentoernooi Groep A · Tuesday 24 June 2025
OLISLAGERS, J. (JEROEN) 1753
13315 KNSB competitie 2025-2026 Klasse 5 ronde 5 · Saturday 28 March 2026
BENSDORP, E. (ERWIN) 1779
12471 SOS competitie 2025/2026 Lijst 1 jan · Tuesday 2 December 2025
ROOIJ DE, J.A. (HANS) 1783
12778 SOS competitie 2025/2026 Lijst 1 juni · Friday 8 May 2026
No FIDE-rated tournaments found.
KNSB competitie 2025-2026 Klasse 5 ronde 5 Saturday 20 September 2025 +0–1=0 -13.4
KNSB competitie 2025-2026 Klasse 5 ronde 7 Saturday 20 September 2025 +0–1=0 -7.1
KNSB competitie 2025-2026 Klasse 5 ronde 6 Saturday 20 September 2025 +0–1=0 -5.5
KNSB competitie 2025-2026 Klasse 5 ronde 4 Saturday 20 September 2025 +0–0=1
KNSB competitie 2025-2026 Klasse 5 Ronde 3 Saturday 20 September 2025 +0–1=0 -14.1
KNSB competitie 2025-2026 Klasse 5 ronde 2 Saturday 20 September 2025 +1–0=0 +11.9
SOS competitie 2025/2026 Lijst 1 juni Monday 1 September 2025 +0–1=0 -11.6
SOS competitie 2025/2026 Lijst 1 mrt Monday 1 September 2025 +1–0=0 +15.4
SOS competitie 2025/2026 Lijst 1 feb Monday 1 September 2025 +1–0=0 +14.6
SOS competitie 2025/2026 Lijst 1 jan Monday 1 September 2025 +0–1=0 -12.1
SOS competitie 2025/2026 Lijst 1 Nov Monday 1 September 2025 +1–0=0 +18.0
Henk Bloemink Vierkampentoernooi Groep A Tuesday 10 June 2025 +1–1=1 -0.9

Rating History

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Peak Ratings

Classic 1849 Dec. 1, 2024
Rapid 1779 March 1, 2026
Blitz 1779 March 1, 2026

Games

Wins 5
Losses 7
Draws 2
Win Rate 36%

Performance by Color

Color Wins Draws Losses Win Rate
White 4 1 3 50%
Black 1 1 4 17%

Recent Matches

Rooij de, J.A. (Hans) (1783) Friday 8 May 2026 LOSS -11.6
Olislagers, J. (Jeroen) (1753) Saturday 28 March 2026 LOSS -13.4
Flohr, D.R. (Dennis) (1941) Saturday 7 March 2026 LOSS -7.1
Kuijken, F.D. (Felix) (1990) Saturday 7 February 2026 LOSS -5.5
Basten van, G.L. (Giovanni) (1852) Tuesday 3 February 2026 WIN +15.4
Goes, A.J. (Ad) (1827) Tuesday 20 January 2026 WIN +14.6
Dasselaar van, L.A.A. (Liam Alexander) Saturday 13 December 2025 DRAW
Bensdorp, E. (Erwin) (1779) Tuesday 2 December 2025 LOSS -12.1
Evers, H. (Harm) (1724) Saturday 22 November 2025 LOSS -14.1
Izaks, R. (Rob) (1752) Saturday 1 November 2025 WIN +11.9
Straaten, J. (Jasper) (1919) Tuesday 7 October 2025 WIN +18.0
Lingen van, H.G.K. (Henk) (1740) Tuesday 24 June 2025 LOSS -12.9
Toorn van der, R. (Rick) (1737) Tuesday 17 June 2025 WIN +12.0
Lubbers, J.W. (Jan-Willem) (1752) Tuesday 10 June 2025 DRAW