KNSB FIDE
MF

Mark Folbert

Rated since March 2026

1890 Classic
1830 Rapid

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
JELLEMA, C.J. (CRIS JOLMER) 1905
12662 De Donger interne competitie 2025-2026 RONDE 1-12 ronde 1-12 · Tuesday 23 September 2025
ZWART DE, J.J. (JELLE-JAN) 1872
12025 FSB-competitie 2025-2026 ronde 6 1e klasse · Thursday 26 March 2026
FABRIEK, T.E. (EDWIN) 1821
11833 FSB-competitie 2025-2026 Beker ronde 1 · Tuesday 18 November 2025
VRIES DE, B. (BEN) 1810
13297 FK Rapid voor teams - · Saturday 21 March 2026
KEIZER, B.G. (BERNARD) 1747
12662 De Donger interne competitie 2025-2026 RONDE 1-12 ronde 1-12 · Tuesday 11 November 2025
Worst losses
BOSMA, P.G. (PIETER) 1587
13297 FK Rapid voor teams - · Saturday 21 March 2026
HEIDE VAN DER, H. (HENK) 1767
13297 FK Rapid voor teams - · Saturday 21 March 2026
WIERSMA, T.R. (TJEERD) 1809
12008 FSB-competitie 2025-2026 ronde 2 1e klasse · Wednesday 5 November 2025
NICOLAI, L. (LEFFERT) 1882
12029 FSB-competitie 2025-2026 ronde 7 1e klasse · Friday 17 April 2026
ZWAAG VAN DER, B.P. (BAS) 1884
12033 FSB-competitie 2025-2026 Beker ronde 3 · Monday 2 March 2026
No FIDE-rated tournaments found.
FK Rapid voor teams - Saturday 21 March 2026 +3–4=0 -31.5
De Donger interne competitie 2025-2026 RONDE 1-12 ronde 1-12 Tuesday 9 September 2025 +2–2=2 +7.7
FSB-competitie 2025-2026 ronde 7 1e klasse Monday 1 September 2025 +0–1=0 -13.5
FSB-competitie 2025-2026 Beker halve finale Monday 1 September 2025 +0–1=0 -7.7
FSB-competitie 2025-2026 ronde 6 1e klasse Monday 1 September 2025 +1–0=0 +11.1
FSB-competitie 2025-2026 Beker ronde 3 Monday 1 September 2025 +0–1=0 -13.5
FSB-competitie 2025-2026 ronde 5 1e klasse Monday 1 September 2025 +0–1=0 -10.9
FSB-competitie 2025-2026 Beker ronde 2 Monday 1 September 2025 +0–0=1 -2.7
FSB-competitie 2025-2026 ronde 4 1e klasse Monday 1 September 2025 +1–0=0 +3.7
FSB-competitie 2025-2026 ronde 3 1e klasse Monday 1 September 2025 +0–0=1 -2.1
FSB-competitie 2025-2026 Beker ronde 1 Monday 1 September 2025 +1–0=0 +8.9
FSB-competitie 2025-2026 ronde 2 1e klasse Monday 1 September 2025 +0–1=0 -16.5

Rating History

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Peak Ratings

Classic 1913 March 1, 2026
Rapid 1862 March 1, 2026
Blitz 1913 March 1, 2026

Games

Wins 8
Losses 11
Draws 4
Win Rate 35%

Performance by Color

Color Wins Draws Losses Win Rate
White 3 3 4 30%
Black 5 1 7 38%

Recent Matches

Nicolai, L. (Leffert) (1882) Friday 17 April 2026 LOSS -13.5
Schram, T. (Tjitze) (2055) Tuesday 7 April 2026 LOSS -7.7
Zwart de, J.J. (Jelle-Jan) (1872) Thursday 26 March 2026 WIN +11.1
Vries de, B. (Ben) (1810) Saturday 21 March 2026 WIN +10.7
Oppenhuizen, W.G. (Wiebe) (1715) Saturday 21 March 2026 WIN +7.6
Bosma, P.G. (Pieter) (1587) Saturday 21 March 2026 LOSS -20.8
Heide van der, H. (Henk) (1767) Saturday 21 March 2026 LOSS -15.8
Lootsma, J. (Jan) (1938) Saturday 21 March 2026 LOSS -9.9
Veen van der, R. (Ronald) (1977) Saturday 21 March 2026 LOSS -8.6
Aartsma, J. (Jan) (1631) Saturday 21 March 2026 WIN +5.2
Zwaag van der, B.P. (Bas) (1884) Monday 2 March 2026 LOSS -13.5
Jhirad, N.R. (Nick) (1970) Tuesday 10 February 2026 LOSS -10.9
Dekker, D.J. (Dirk-Jan) (1849) Tuesday 13 January 2026 DRAW -2.7
Kurstjens, T. (Tim) (1618) Tuesday 16 December 2025 WIN +3.7
Meindersma, T. (Teun) (1967) Tuesday 2 December 2025 DRAW +1.7
Popta van, H.D. (Hette) (1866) Tuesday 25 November 2025 DRAW -2.1
Fabriek, T.E. (Edwin) (1821) Tuesday 18 November 2025 WIN +8.9
Keizer, B.G. (Bernard) (1747) Tuesday 11 November 2025 WIN +6.6
Wiersma, T.R. (Tjeerd) (1809) Wednesday 5 November 2025 LOSS -16.5
Meindersma, T. (Theo) Tuesday 21 October 2025 LOSS