KNSB FIDE
JB

Jan Bol

Rated since January 2023

1830 Classic
1829 Rapid
1829 Blitz

RIVALRY

Nemesis
Brandsma, F. (Frits)
Games: 5 · Win rate: 40%
Kryptonite
Koster, A.G. (Bert)
Games: 4 · Win rate: 0%
Easy Target
Bekker, F. (Free)
Games: 3 · Win rate: 67%

The good & the bad

Best wins
KAMMINGA, W.R. (ROB) 2014
5867 interne competitie SC Middelstum 2022-2023 Groep A · Tuesday 8 November 2022
SMIT, T. (THEO) 1835
9910 NOSBO competitie 2024-2025 November 2024 · Tuesday 19 November 2024
PLUG, A.J. (ARJAN) 1819
8456 Chess Festival Groningen Compact · Sunday 29 December 2024
BOSVELD, H.E.P. (HENK) 1816
12882 NOSBO-competitie 2025-2026 ronde 4 Groep A · Tuesday 20 January 2026
HOOGEBOOM, B. (BOUDEWIJN) 1724
11232 Chessfestival Groningen Vierkampen Groep A · Tuesday 23 December 2025
Worst losses
PRINS, B.H. (BE) 1416
5867 interne competitie SC Middelstum 2022-2023 Groep A · Tuesday 1 November 2022
SCHOLTEN, E. (EVERT) 1524
5867 interne competitie SC Middelstum 2022-2023 Groep A · Tuesday 11 October 2022
KOSTER, A.G. (BERT) 1571
5867 interne competitie SC Middelstum 2022-2023 Groep A · Tuesday 21 February 2023
POTJER, G.C. (GERARD) 1679
7817 Chess Festival Groningen Vierkampen · Saturday 23 December 2023
FOLKERS, S. (SONO) 1711
7817 Chess Festival Groningen Vierkampen · Friday 22 December 2023
Chessfestival Groningen Vierkampen Groep A Monday 22 December 2025 +3–0=0 +17.8
Chess Festival Groningen Compact Saturday 21 December 2024 +1–2=1 -0.3
Chess Festival Groningen Vierkampen Thursday 21 December 2023 +0–2=1 -21.9
NOSBO-competitie 2025-2026 ronde 7 Groep A Monday 13 April 2026 +1–0=0 +6.7
S.C. Middelstum interne competitie 03-03-2026 t/m 16-06-2026 (020024) Monday 2 February 2026 +4–1=4 +4.9
NOSBO-competitie 2025-2026 ronde 4 Groep A Monday 19 January 2026 +1–0=0 +12.5
S.C. Middelstum interne competitie 23-06-2026 t/m 23-06-2026 (020024) Friday 9 January 2026 +0–1=0 -10.5
NOSBO-competitie 2025-2026 ronde 3 Groep A Friday 28 November 2025 +1–0=0
NOSBO-competitie 2025-2026 ronde 2 Groep A Monday 10 November 2025 +0–1=0 -14.4
S.C. Middelstum interne competitie 09-09-2025 t/m 30-09-2025 (020024) Tuesday 9 September 2025 +0–1=1 -19.9
S.C. Middelstum interne competitie 04-06-2025 t/m 05-09-2025 (020024) Wednesday 4 June 2025 +1–1=1 -17.0
NOSBO competitie 2024-2025 Januari 2025 Monday 13 January 2025 +0–0=1 -6.9
NOSBO competitie 2024-2025 Februari 2025 Wednesday 1 January 2025 +1–0=0 +4.7
NOSBO competitie 2024-2025 December 2024 Monday 25 November 2024 +0–0=1 -2.5
NOSBO competitie 2024-2025 November 2024 Monday 14 October 2024 +2–0=0 +20.2
NOSBO-competitie 2023-2024 April 2024 Sunday 1 October 2023 +1–0=1 +5.8
NOSBO-competitie 2023-2024 Maart 2024 Sunday 1 October 2023 +2–0=0 +15.4
NOSBO-competitie 2023-2024 Februari 2024 Sunday 1 October 2023 +1–0=0 +1.2
NOSBO-competitie 2023-2024 Januari 2024 Sunday 1 October 2023 +1–0=0 +12.1
NOSBO-competitie 2023-2024 December 2023 Sunday 1 October 2023 +1–0=0 +3.9
interne competitie SC Middelstum 2022-2023 Groep A Tuesday 13 September 2022 +9–5=4 -2.6

Team Competition

Current team
Middelstum I
Klasse 1A · 2025-2026 · 4 games
Past teams
Middelstum I
Zestallen 1e fase A · 2024-2025
Middelstum I
Zestallen · 2023-2024

Rating History

Loading rating history...

Peak Ratings

Classic 1855 Dec. 1, 2024
Rapid 1829 March 1, 2026
Blitz 1829 March 1, 2026

Games

Wins 30
Losses 14
Draws 15
Win Rate 51%

Performance by Color

Color Wins Draws Losses Win Rate
White 15 9 4 54%
Black 15 6 10 48%

Recent Matches

Brandsma, F. (Frits) (1895) Tuesday 23 June 2026 LOSS -10.5
Brandsma, F. (Frits) (1895) Tuesday 16 June 2026 DRAW +2.0
Harmanny, W. (Wim) (1586) Tuesday 9 June 2026 WIN +4.8
Hof, J.M. (Jan Mark) (1855) Tuesday 2 June 2026 DRAW +0.7
Bekker, F. (Free) (1587) Tuesday 26 May 2026 DRAW -7.7
Kamminga, W.R. (Rob) (2033) Tuesday 19 May 2026 DRAW +6.4
Prins, B.H. (Be) (1642) Tuesday 12 May 2026 WIN +6.2
Koster, A.G. (Bert) (1831) Tuesday 28 April 2026 LOSS -12.4
Aleman, J.A.A. (Johan) (1653) Tuesday 14 April 2026 WIN +6.7
Gilding, F. (Felix) Tuesday 7 April 2026 WIN
Bos, W. (Wim) (1588) Tuesday 31 March 2026 WIN +5.0
Bosveld, H.E.P. (Henk) (1816) Tuesday 20 January 2026 WIN +12.5
Zeng, H. (Henry) Wednesday 24 December 2025 WIN
Hoogeboom, B. (Boudewijn) (1724) Tuesday 23 December 2025 WIN +9.9
Hettinga, J. (Jaap) (1662) Monday 22 December 2025 WIN +7.9
Dijkstra, J. (Jaap) Tuesday 2 December 2025 WIN
Ris, G.J.R. (Gert-Jan) (1758) Monday 10 November 2025 LOSS -14.4
Melle van, J.P. (Joost) (1650) Tuesday 23 September 2025 DRAW -6.5
Brandsma, F. (Frits) (1822) Tuesday 9 September 2025 LOSS -13.5
Koster, A.G. (Bert) (1741) Thursday 24 July 2025 LOSS -16.2