KNSB FIDE
JB

Jan Boersma

Rated since January 2023

RIVALRY

Nemesis
Etmans, M.D. (Maarten)
Games: 8 · Win rate: 50%
Kryptonite
Vogel, J. (Jaap)
Games: 4 · Win rate: 0%
Easy Target
Schriemer, O. (Oene)
Games: 6 · Win rate: 83%

The good & the bad

Best wins
GOES, S.F. (STEN) 2243
10470 Tata Steel Chess Tournament 2026 Tienkampen · Sunday 25 January 2026
PIJKEREN, J. (JAN) 2187
7802 KNSB competitie 2023-2024 Klasse 1 ronde 4 · Saturday 25 November 2023
VROOMBOUT, E.G.A. (ENRICO) 2131
6250 Chess Festival Groningen Compact A · Friday 30 December 2022
KAMPHUIS, J. (JASPER) 2126
9791 Hoogeveen Schaaktoernooi Amateur Middag · Wednesday 30 October 2024
ROORDA, C. (CAS) 2109
9837 K.S.C. Philidor 1847 interne competitie 29-10-2024 t/m 19-11-2024 (010026) · Tuesday 5 November 2024
Worst losses
EEMS VAN DER, R. (RIEMER) 1770
7338 playoffs philidor Ronde 1 t/m n · Tuesday 28 March 2023
ROORDA, C. (CAS) 1879
7581 K.S.C. Philidor 1847 interne competitie 12-09-2023 t/m 19-09-2023 (010026) · Tuesday 19 September 2023
ETIENNE, G. (GHILON) 1955
11706 Open NK Schaken 2025 Reserve A · Thursday 24 July 2025
MOL, C.A. (CHRISTIAAN) 1975
9791 Hoogeveen Schaaktoernooi Amateur Middag · Saturday 2 November 2024
ZECHA, O.A. (OSCAR) 1987
7753 Hoogeveen 2023 Open Groep A · Thursday 26 October 2023
Tata Steel Chess Tournament 2026 Tienkampen Friday 16 January 2026 +1–0=7 +21.5
Chessfestival Groningen Compact Groep A Friday 26 December 2025 +3–1=1 +20.6
Hoogeveen Schaaktoernooi Middag Saturday 18 October 2025 +4–0=4 +4.8
Open NK Schaken 2025 Reserve A Tuesday 22 July 2025 +4–2=3 -14.8
NK Senioren en Veteranen 2025 NK Senioren en Veteranen 2025 Saturday 12 July 2025 +2–1=4 -9.5
Fries Kampioenschap 60+ Groep A Tuesday 4 February 2025 +3–0=4 -9.9
Tata Steel Chess Tournament 2025 Tienkampen Friday 17 January 2025 +0–1=8 -18.5
Chess Festival Groningen Compact Saturday 21 December 2024 +2–1=1 -1.4
Hoogeveen Schaaktoernooi Amateur Middag Saturday 26 October 2024 +6–1=1 +28.2
50e Seniorentoernooi NK Senioren en Veteranen Saturday 13 July 2024 +0–0=7 -13.0
Hoogeveen 2023 Open Groep A Saturday 21 October 2023 +0–4=3 -24.5
Tata Steel Chess Tournament 2023 Tienkampen Friday 13 January 2023 +2–0=7 +28.9
KNSB competitie 2025-2026 Klasse 1 ronde 7 Saturday 20 September 2025 +0–0=1 +0.7
KNSB competitie 2025-2026 Klasse 1 ronde 5 Saturday 20 September 2025 +0–0=1 +1.2
KNSB competitie 2025-2026 Klasse 1 Ronde 4 Saturday 20 September 2025 +0–0=1 -0.1
KNSB competitie 2025-2026 Klasse 1 ronde 3 Saturday 20 September 2025 +0–0=1 +2.2
KNSB competitie 2025-2026 Klasse 1 ronde 2 Saturday 20 September 2025 +1–0=0 +9.1
KNSB competitie 2025-2026 Klasse 1 ronde 1 Saturday 20 September 2025 +0–0=1 -4.4
K.S.C. Philidor 1847 interne competitie 08-09-2025 t/m 22-09-2025 (0… Monday 8 September 2025 +0–1=0 -9.2
SC WES interne competitie 11-12-2025 t/m 15-01-2026 (010035) Monday 1 September 2025 +1–0=0 +5.8
SC WES interne competitie 30-10-2025 t/m 20-11-2025 (010035) Monday 1 September 2025 +0–0=1 -7.4
SC WES interne competitie 02-10-2025 t/m 16-10-2025 (010035) Monday 1 September 2025 +1–0=0 +12.1
SC WES interne competitie 18-09-2025 t/m 18-09-2025 (010035) Monday 1 September 2025 +1–0=0 +5.5
KNSB competitie 2024-2025 Klasse 4 ronde 9 en uitgestelde wedstrijd … Saturday 21 September 2024 +0–0=1 -5.1
KNSB competitie 2024-2025 Klasse 4 ronde 8 Saturday 21 September 2024 +0–0=1 -4.0
KNSB competitie 2024-2025 Klasse 4 ronde 7 Saturday 21 September 2024 +0–0=1 -4.7
KNSB competitie 2024-2025 Klasse 4 ronde 6 Saturday 21 September 2024 +0–0=1 -1.6
KNSB competitie 2024-2025 Klasse 4 ronde 5 Saturday 21 September 2024 +1–0=0 +4.8
KNSB competitie 2024-2025 Klasse 4 ronde 4 Saturday 21 September 2024 +1–0=0 +5.9
KNSB competitie 2024-2025 Klasse 4 ronde 3 Saturday 21 September 2024 +0–0=1 -5.6
KNSB competitie 2024-2025 Klasse 4 ronde 2 Saturday 21 September 2024 +1–0=0 +10.2
KNSB competitie 2024-2025 Klasse 4 ronde 1 Saturday 21 September 2024 +0–0=1 -0.7
K.S.C. Philidor 1847 interne competitie 07-01-2025 t/m 14-01-2025 (01… Monday 9 September 2024 +1–0=0 +7.8
K.S.C. Philidor 1847 interne competitie 03-12-2024 t/m 17-12-2024 (0… Monday 9 September 2024 +1–0=1 +0.6
K.S.C. Philidor 1847 interne competitie 29-10-2024 t/m 19-11-2024 (010026) Monday 9 September 2024 +1–0=0 +12.9
K.S.C. Philidor 1847 interne competitie 01-10-2024 t/m 22-10-2024 (010026) Monday 9 September 2024 +4–0=0 +25.9
K.S.C. Philidor 1847 interne competitie 10-09-2024 t/m 24-09-2024 (010026) Monday 9 September 2024 +2–0=1 +20.5
K.S.C. Philidor 1847 interne competitie 19-03-2024 t/m 28-05-2024 (010026) Tuesday 19 March 2024 +3–0=0 +13.6
KNSB competitie 2023-2024 Klasse 1 ronde 4 Saturday 16 September 2023 +1–0=0 +18.6
KNSB competitie 2023-2024 Klasse 1 ronde 2 Saturday 16 September 2023 +0–1=0 -7.7
KNSB competitie 2023-2024 Klasse 1 ronde 1 Saturday 16 September 2023 +0–0=1 -0.7
K.S.C. Philidor 1847 interne competitie 31-10-2023 t/m 21-11-2023 (010026) Tuesday 12 September 2023 +3–0=0 +21.2
K.S.C. Philidor 1847 interne competitie 26-09-2023 t/m 24-10-2023 (010026) Tuesday 12 September 2023 +1–0=1 +7.0
K.S.C. Philidor 1847 interne competitie 12-09-2023 t/m 19-09-2023 (010026) Tuesday 12 September 2023 +1–1=0 -2.4
Chessable Open NK 2023 Open NK Monday 24 July 2023 +0–4=5 -36.4
49e Seniorentoernooi Groep NK Saturday 15 July 2023 +2–1=4 +10.0
playoffs philidor Ronde 1 t/m n Tuesday 7 March 2023 +1–1=2 -12.7
Fries Kampioenschap 60+ Groep A Wednesday 1 February 2023 +5–0=2 +19.3
Chess Festival Groningen Compact A Wednesday 21 December 2022 +2–0=3 +46.3
K.S.C. Philidor 1847 interne competitie 30-11-2022 t/m 20-12-2022 (010026) Sunday 27 November 2022 +2–0=2 +26.0
KNSB competitie 2022-2023 Klasse 1 ronde 9 Saturday 17 September 2022 +0–0=1 +1.7
KNSB competitie 2022-2023 Klasse 1 ronde 8 Saturday 17 September 2022 +0–0=1 -3.8
KNSB competitie 2022-2023 Klasse 1 ronde 7 Saturday 17 September 2022 +0–1=0 -5.7
KNSB competitie 2022-2023 Klasse 1 ronde 6 Saturday 17 September 2022 +0–0=1 -2.1
KNSB competitie 2022-2023 Klasse 1 ronde 5 Saturday 17 September 2022 +0–0=1 +7.6
KNSB competitie 2022-2023 Klasse 1 ronde 4 Saturday 17 September 2022 +0–0=1 +0.4
K.S.C. Philidor 1847 interne competitie 28-02-2023 t/m 28-02-2023 (010026) Tuesday 13 September 2022 +1–0=0 +10.7
K.S.C. Philidor 1847 interne competitie 27-12-2022 t/m 21-02-2023 (010026) Tuesday 13 September 2022 +0–0=2 +3.0
K.S.C. Philidor 1847 interne competitie 02-11-2022 t/m 23-11-2022 (010026) Tuesday 13 September 2022 +1–0=1 +18.6

Rating History

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Peak Ratings

Classic 2149 Feb. 1, 2025
Rapid 2142 March 1, 2026
Blitz 2142 March 1, 2026

Games

Wins 66
Losses 21
Draws 92
Win Rate 37%

Performance by Color

Color Wins Draws Losses Win Rate
White 35 47 8 39%
Black 31 45 13 35%

Recent Matches

WIM Weersel van, A. (Arlette) (2141) Saturday 7 February 2026 DRAW +0.7
Borst, F. (Filip) (2026) Saturday 31 January 2026 DRAW -2.4
Termeulen, A. (Albert) (2070) Friday 30 January 2026 DRAW -0.8
Frans, R.P. (Richard) (2099) Wednesday 28 January 2026 DRAW +0.2
Vries de, L.J.A. (Leon) (2062) Tuesday 27 January 2026 DRAW -1.1
Pavoordt van de, M. (Max) (2178) Monday 26 January 2026 DRAW +2.9
Goes, S.F. (Sten) (2243) Sunday 25 January 2026 WIN +17.5
Woudsma, M. (Martijn) (2151) Saturday 24 January 2026 DRAW +2.0
Schlette, M. (Marc) (2189) Friday 23 January 2026 DRAW +3.3
Abma, K. (Klaas) (1885) Thursday 15 January 2026 WIN +5.8
Putten van, H.T. (Henk) (2089) Tuesday 30 December 2025 DRAW -0.1
CM Dam ten, B. (Bram) (2192) Monday 29 December 2025 LOSS -9.1
Vroombout, E.G.A. (Enrico) (2128) Sunday 28 December 2025 WIN +13.7
Sijpkens, M. (Michiel) (1979) Saturday 27 December 2025 WIN +8.6
Buurstra, R. (Richard) (1942) Friday 26 December 2025 WIN +7.5
Mil van, L.H.F. (Lucas) (2126) Saturday 13 December 2025 DRAW +1.2
Sleeckx, A. (Alexander) (2096) Saturday 22 November 2025 DRAW -0.1
Urk van, A. (Auke) (1863) Thursday 20 November 2025 DRAW -7.4
Oorebeek, E. (Erwin) (2162) Saturday 1 November 2025 DRAW +2.2
Witte de, W. (Wiebe) (1965) Saturday 25 October 2025 DRAW -3.7