KNSB FIDE
AK

Aldert-Jan Keessen

Rated since January 2023

2126 Classic
2131 Rapid
2230 Blitz

RIVALRY

Nemesis
Knol, G.J. (Geon)
Games: 3 · Win rate: 100%

The good & the bad

Best wins
WEMPE, J. (JOOST) (FM) 2274
NOSBO snelschaaktoernooi teams 2024 · Saturday 14 September 2024
NICOLAI, A.M. (AMIR) 2195
NOSBO snelschaaktoernooi teams 2024 · Saturday 14 September 2024
KNOL, G.J. (GEON) 2145
NOSBO snelschaaktoernooi teams 2024 · Saturday 14 September 2024
MULLER, S.K. (KENNETH) 2070
12437 NOSBO-competitie 2025-2026 ronde 2 Groep A · Friday 14 November 2025
GROENEWOLD, J.J. (JAN JORIS) 2066
NOSBO snelschaaktoernooi teams 2024 · Saturday 14 September 2024
Worst losses
KLOOSTERMAN, H. (HENK) 1841
6604 NOSBO competitie 2022-2023 Februari 2023 · Monday 13 February 2023
KUIPERS, M. (MARCEL) 1879
8054 NOSBO-competitie 2023-2024 December 2023 · Friday 1 December 2023
MARIS, I. (IVO) (FM) 2366
8939 NOSBO-competitie 2023-2024 April 2024 · Friday 12 April 2024
No FIDE-rated tournaments found.
NOSBO-competitie 2025-2026 ronde 7 Groep A Monday 13 April 2026 +0–0=1 -5.1
NOSBO-competitie 2025-2026 ronde 6 (minus één uitgestelde wedstrijd)… Monday 16 March 2026 +0–0=1 -5.1
NOSBO-competitie 2025-2026 ronde 5 (minus één uitgestelde wedstrijd)… Monday 16 February 2026 +2–0=0 +20.0
NOSBO-competitie 2025-2026 ronde 4 Groep A Monday 19 January 2026 +0–0=1 -4.4
NOSBO-competitie 2025-2026 ronde 2 Groep A Monday 10 November 2025 +1–0=0 +10.3
NOSBO competitie 2024-2025 April 2025 Saturday 1 March 2025 +1–0=0 +5.4
NOSBO competitie 2024-2025 Januari 2025 Monday 13 January 2025 +1–0=0 +10.8
NOSBO competitie 2024-2025 Mei 2025 Wednesday 1 January 2025 +1–0=0 +4.1
NOSBO competitie 2024-2025 Maart 2025 Wednesday 1 January 2025 +0–0=1 +0.2
NOSBO competitie 2024-2025 Februari 2025 Wednesday 1 January 2025 +0–0=2 -2.0
NOSBO competitie 2024-2025 December 2024 Monday 25 November 2024 +0–0=1 -5.8
NOSBO snelschaaktoernooi teams 2024 Saturday 14 September 2024 +13–0=0 +121.6
NOSBO-competitie 2023-2024 Mei 2024 Sunday 1 October 2023 +1–0=0 +3.8
NOSBO-competitie 2023-2024 April 2024 Sunday 1 October 2023 +0–1=2 -12.1
NOSBO-competitie 2023-2024 Maart 2024 Sunday 1 October 2023 +1–0=0 +6.5
NOSBO-competitie 2023-2024 Februari 2024 Sunday 1 October 2023 +1–0=0 +3.9
NOSBO-competitie 2023-2024 Januari 2024 Sunday 1 October 2023 +0–0=2 -10.8
NOSBO-competitie 2023-2024 December 2023 Sunday 1 October 2023 +0–1=0 -18.9
NOSBO competitie 2022-2023 April 2023 Monday 24 October 2022 +1–0=0 +4.7
NOSBO competitie 2022-2023 Maart 2023 Monday 24 October 2022 +0–0=1 -4.0
NOSBO competitie 2022-2023 Februari 2023 Monday 24 October 2022 +0–1=0 -19.3
NOSBO competitie 2022-2023 Januari 2023 Monday 24 October 2022 +1–0=1 +0.7

Rating History

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Peak Ratings

Classic 2154 Feb. 1, 2023
Rapid 2136 March 1, 2026
Blitz 2230 Oct. 1, 2024

Games

Wins 24
Losses 3
Draws 13
Win Rate 60%

Performance by Color

Color Wins Draws Losses Win Rate
White 11 5 2 61%
Black 13 8 1 59%

Recent Matches

Mostert, D.C.J. (Davin) (1966) Friday 17 April 2026 DRAW -5.1
Dijkhuizen, K.G. (Klaas) (1968) Tuesday 17 March 2026 DRAW -5.1
Knol, G.J. (Geon) (2069) Friday 20 February 2026 WIN +10.0
Knol, G.J. (Geon) (2069) Friday 20 February 2026 WIN +10.0
Brinks, J.W. (Jan Willem) (1992) Monday 19 January 2026 DRAW -4.4
Muller, S.K. (Kenneth) (2070) Friday 14 November 2025 WIN +10.3
Loos, E.J.T. (Tim) (1842) Friday 16 May 2025 WIN +4.1
Timmer, M. (Michel) (1890) Friday 11 April 2025 WIN +5.4
FM Clemens, A.H.P. (Adrian) (2116) Thursday 6 March 2025 DRAW +0.2
Jong de, M. (Mathijs) (2048) Friday 7 February 2025 DRAW -2.2
Kroon, R.C. (Roelof) (2120) Tuesday 4 February 2025 DRAW +0.2
Leest van der, B.G. (Bert) (2053) Friday 24 January 2025 WIN +10.8
Dijkhuizen, K.G. (Klaas) (1929) Friday 29 November 2024 DRAW -5.8
Koster, A.J. (Dries) (2038) Saturday 14 September 2024 WIN +9.9
Hardeman, I. (Imara) (1696) Saturday 14 September 2024 WIN +1.8
Brand, N.W. (Niels) (1964) Saturday 14 September 2024 WIN +7.6
Scheffer, E.F. (Enno) (1954) Saturday 14 September 2024 WIN +7.3
Leenes, R.E. (Robert) (2053) Saturday 14 September 2024 WIN +10.4
Nicolai, A.M. (Amir) (2195) Saturday 14 September 2024 WIN +15.2
FM Clemens, A.H.P. (Adrian) (2013) Saturday 14 September 2024 WIN +9.1