KNSB FIDE
PA

Piet Aardenburg

Rated since January 2023

1819 Classic
1819 Rapid
1819 Blitz

RIVALRY

Nemesis
Heertjes, M. (Marc)
Games: 5 · Win rate: 40%
Kryptonite
Stapel, A. (Arend)
Games: 3 · Win rate: 33%

The good & the bad

Best wins
HOLSCHER, P.A.C. (PETER) 1941
12827 Caïssa-Eenhoorn interne competitie 13-01-2026 t/m 13-01-2026 (090008) · Tuesday 13 January 2026
VRIES DE, J. (HANS) 1821
11957 Caïssa-Eenhoorn interne competitie 30-09-2025 t/m 30-09-2025 (090008) · Tuesday 30 September 2025
DIJK VAN, T. (TON) 1816
12532 Caïssa-Eenhoorn interne competitie 02-12-2025 t/m 02-12-2025 (090008) · Tuesday 2 December 2025
WAART DE, S.C. (STEVEN) 1798
12369 Caïssa-Eenhoorn interne competitie 18-11-2025 t/m 18-11-2025 (090008) · Tuesday 18 November 2025
SPIER, R. (ROEL) 1773
8283 Tata Steel Chess Tournament 2025 Weekendvierkampen · Friday 17 January 2025
Worst losses
DOUMA, R.D. (RINZE) 1426
7941 Interne competitie Caïssa-Eenhoorn 2023-2024 T/m november · Tuesday 31 October 2023
HEERTJES, M. (MARC) 1515
8754 Interne competitie Caïssa-Eenhoorn 2023-2024 T/m maart · Tuesday 27 February 2024
WOLFF VAN DER, A. (ARNOLD) 1652
8339 Interne competitie Caïssa-Eenhoorn 2023-2024 T/m januari · Tuesday 23 January 2024
ZYAT, J. (JAMAL) 1712
10003 Interne competitie Caïssa-Eenhoorn 2024-2025 T/m november · Tuesday 12 November 2024
BEST DE, B. (BORIS) 1834
11881 Interne competitie Caïssa-Eenhoorn 2025-2026 2025-09-23 · Tuesday 23 September 2025
Tata Steel Chess Tournament 2025 Weekendvierkampen Friday 17 January 2025 +1–0=2 +13.3
Caïssa-Eenhoorn interne competitie 21-04-2026 t/m 21-04-2026 (090008) Monday 1 September 2025 +1–0=0 +8.3
Caïssa-Eenhoorn interne competitie 14-04-2026 t/m 14-04-2026 (090008) Monday 1 September 2025 +0–0=1 -5.3
Caïssa-Eenhoorn interne competitie 07-04-2026 t/m 07-04-2026 (090008) Monday 1 September 2025 +0–1=0 -11.3
Caïssa-Eenhoorn interne competitie 31-03-2026 t/m 31-03-2026 (090008) Monday 1 September 2025 +1–0=0 +8.3
Caïssa-Eenhoorn interne competitie 10-03-2026 t/m 10-03-2026 (090008) Monday 1 September 2025 +1–0=0 +9.7
Caïssa-Eenhoorn interne competitie 17-02-2026 t/m 17-02-2026 (090008) Monday 1 September 2025 +0–1=0 -2.5
Caïssa-Eenhoorn interne competitie 03-02-2026 t/m 03-02-2026 (090008) Monday 1 September 2025 +0–1=0 -8.3
Caïssa-Eenhoorn interne competitie 27-01-2026 t/m 27-01-2026 (090008) Monday 1 September 2025 +1–0=0 +10.9
Caïssa-Eenhoorn interne competitie 13-01-2026 t/m 13-01-2026 (090008) Monday 1 September 2025 +1–0=0 +17.5
Caïssa-Eenhoorn interne competitie 09-12-2025 t/m 09-12-2025 (090008) Monday 1 September 2025 +0–0=1 -2.0
Caïssa-Eenhoorn interne competitie 02-12-2025 t/m 02-12-2025 (090008) Monday 1 September 2025 +1–0=0 +13.8
Caïssa-Eenhoorn interne competitie 18-11-2025 t/m 18-11-2025 (090008) Monday 1 September 2025 +1–0=0 +13.5
Caïssa-Eenhoorn interne competitie 11-11-2025 t/m 11-11-2025 (090008) Monday 1 September 2025 +1–0=0 +5.6
Caïssa-Eenhoorn interne competitie 07-10-2025 t/m 07-10-2025 (090008) Monday 1 September 2025 +0–0=1 -8.3
Caïssa-Eenhoorn interne competitie 30-09-2025 t/m 30-09-2025 (090008) Monday 1 September 2025 +1–0=0 +14.0
Interne competitie Caïssa-Eenhoorn 2025-2026 2025-09-23 Monday 1 September 2025 +0–1=0 -10.6
Interne competitie Caïssa-Eenhoorn 2025-2026 2025-09-16 Monday 1 September 2025 +0–1=0 -5.8
Interne competitie Caïssa-Eenhoorn 2025-2026 2025-09-09 Monday 1 September 2025 +0–1=0 -7.4
Interne competitie Caïssa-Eenhoorn 2024-2025 2025-05-20 Sunday 1 September 2024 +0–0=1 +1.0
Interne competitie Caïssa-Eenhoorn 2024-2025 2025-05-13 Sunday 1 September 2024 +1–0=0 +4.6
Interne competitie Caïssa-Eenhoorn 2024-2025 2025-05-06 Sunday 1 September 2024 +0–0=1 -1.1
Interne competitie Caïssa-Eenhoorn 2024-2025 2025-04-15 Sunday 1 September 2024 +0–0=1
Interne competitie Caïssa-Eenhoorn 2024-2025 2025-04-01 Sunday 1 September 2024 +0–0=1 -0.5
Interne competitie Caïssa-Eenhoorn 2024-2025 2025-03-25 Sunday 1 September 2024 +1–0=0 +5.7
Interne competitie Caïssa-Eenhoorn 2024-2025 2025-03-18 Sunday 1 September 2024 +0–0=1 -5.1
Interne competitie Caïssa-Eenhoorn 2024-2025 2025-02-04 Sunday 1 September 2024 +1–0=0 +5.4
Interne competitie Caïssa-Eenhoorn 2024-2025 2025-01-21 Sunday 1 September 2024 +0–0=1 +1.1
Interne competitie Caïssa-Eenhoorn 2024-2025 2025-01-14 Sunday 1 September 2024 +0–0=1 +1.5
Interne competitie Caïssa-Eenhoorn 2024-2025 T/m november Sunday 1 September 2024 +0–1=2 -13.7
Interne competitie Caïssa-Eenhoorn 2024-2025 T/m oktober Sunday 1 September 2024 +0–0=3 -4.4
Interne competitie Caïssa-Eenhoorn 2024-2025 T/m september Sunday 1 September 2024 +0–1=0 -7.7
XX Open Internacional Amateur de Calvia Saturday 7 October 2023 +2–4=0 -13.4
Interne competitie Caïssa-Eenhoorn 2023-2024 T/m mei Friday 1 September 2023 +0–1=0 -5.4
Interne competitie Caïssa-Eenhoorn 2023-2024 T/m april Friday 1 September 2023 +0–0=2 -3.0
Interne competitie Caïssa-Eenhoorn 2023-2024 T/m maart Friday 1 September 2023 +2–1=2 -11.0
Interne competitie Caïssa-Eenhoorn 2023-2024 T/m februari Friday 1 September 2023 +0–0=1 -5.8
Interne competitie Caïssa-Eenhoorn 2023-2024 T/m januari Friday 1 September 2023 +0–1=0 -13.6
Interne competitie Caïssa-Eenhoorn 2023-2024 T/m december Friday 1 September 2023 +1–0=0 +5.7
Interne competitie Caïssa-Eenhoorn 2023-2024 T/m november Friday 1 September 2023 +2–1=0 -13.1
Interne competitie Caïssa-Eenhoorn 2023-2024 T/m oktober Friday 1 September 2023 +1–0=1 +1.0
Interne competitie Caïssa-Eenhoorn 2023-2024 T/m september Friday 1 September 2023 +0–1=1 -6.3

Team Competition

Current team
Caissa-Eenhoorn 2
Klasse 3D · 2021-2022 · 3 games

Rating History

Loading rating history...

Peak Ratings

Classic 1820 Feb. 1, 2026
Rapid 1819 May 1, 2026
Blitz 1819 May 1, 2026

Games

Wins 21
Losses 17
Draws 24
Win Rate 34%

Performance by Color

Color Wins Draws Losses Win Rate
White 10 14 7 32%
Black 11 10 10 35%

Recent Matches

Druijf, W.J. (Wout) (1695) Tuesday 21 April 2026 WIN +8.3
Bravenboer, R. (Remco) (1660) Tuesday 14 April 2026 DRAW -5.3
Krol van de, S.T. (Sernin) (1854) Tuesday 7 April 2026 LOSS -11.3
Baank, M.A.R.C. (Marc) (1685) Tuesday 31 March 2026 WIN +8.3
Stapel, A. (Arend) (1728) Tuesday 10 March 2026 WIN +9.7
Manshanden, N.M. (Nick) (2185) Tuesday 17 February 2026 LOSS -2.5
Kelder, S. (Sjoerd) (1945) Tuesday 3 February 2026 LOSS -8.3
Heertjes, M. (Marc) (1745) Tuesday 27 January 2026 WIN +10.9
Holscher, P.A.C. (Peter) (1941) Tuesday 13 January 2026 WIN +17.5
Groenendijk, C. (Cees) (1721) Tuesday 9 December 2025 DRAW -2.0
Dijk van, T. (Ton) (1816) Tuesday 2 December 2025 WIN +13.8
Waart de, S.C. (Steven) (1798) Tuesday 18 November 2025 WIN +13.5
Veen van der, W. (Willem) (1553) Tuesday 11 November 2025 WIN +5.6
Best de, H. (Harry) (1482) Tuesday 7 October 2025 DRAW -8.3
Vries de, J. (Hans) (1821) Tuesday 30 September 2025 WIN +14.0
Best de, B. (Boris) (1834) Tuesday 23 September 2025 LOSS -10.6
Waert van, J.J.P. (Peter) (1989) Tuesday 16 September 2025 LOSS -5.8
Kelder, S. (Sjoerd) (1932) Tuesday 9 September 2025 LOSS -7.4
Heertjes, M. (Marc) (1803) Tuesday 20 May 2025 DRAW +1.0
Best de, H. (Harry) (1517) Tuesday 13 May 2025 WIN +4.6