KNSB FIDE
JB

Jan Boersma

Rated since January 2023

2139 Classic
2112 Rapid
2130 Blitz

RIVALRY

Nemesis
Etmans, M.D. (Maarten)
Games: 8 · Win rate: 50%
Kryptonite
Vogel, J. (Jaap)
Games: 4 · Win rate: 0%
Easy Target
Eijk van, S.G. (Siem)
Games: 5 · Win rate: 80%

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
SCHRIEMER, O. (OENE) 1953
14203 K.S.C. Philidor 1847 interne competitie 03-11-2025 t/m 18-08-2026 (0… · Monday 3 November 2025
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
Open NK Schaken 2026 Reserve A Tuesday 21 July 2026 +4–0=5 +1.9
NK Senioren en Veteranen 2026 Groep NK Saturday 11 July 2026 +1–0=6 -12.4
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
K.S.C. Philidor 1847 interne competitie 03-11-2025 t/m 18-08-2026 (0… Sunday 2 November 2025 +3–2=0 -27.0
KNSB competitie 2025-2026 Klasse 1 ronde 6 Saturday 20 September 2025 +0–1=0 -10.3
KNSB competitie 2025-2026 Klasse 1 ronde 8 Saturday 20 September 2025 +0–0=1 +2.1
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 30-04-2026 t/m 21-05-2026 (010035) Monday 1 September 2025 +2–0=0 +12.0
SC WES interne competitie 23-04-2026 t/m 23-04-2026 (010035) Monday 1 September 2025 +1–0=0 +7.3
SC WES interne competitie 29-01-2026 t/m 19-03-2026 (010035) Monday 1 September 2025 +1–0=2 -4.2
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 78
Losses 24
Draws 106
Win Rate 38%

Performance by Color

Color Wins Draws Losses Win Rate
White 43 54 8 41%
Black 35 52 16 34%

Recent Matches

Alnsirat, O. (Omar) (1887) Tuesday 18 August 2026 WIN +4.4
Hermeling, C. (Caspar) (1981) Wednesday 29 July 2026 WIN +6.3
Homs, G.C.J. (Guust) (2069) Tuesday 28 July 2026 DRAW -2.5
Aengenheister, D. (Dennis) (1989) Monday 27 July 2026 DRAW -4.8
Murali, R. (Rishiadithya) (1932) Sunday 26 July 2026 DRAW -6.2
Dekker, J. (Jasper) (1988) Saturday 25 July 2026 DRAW -4.8
Smit, E. (Emeline) (2030) Friday 24 July 2026 WIN +7.6
Kompaan, R. (Rick) (2008) Thursday 23 July 2026 WIN +7.0
Seip, R. (Rien) (1939) Wednesday 22 July 2026 DRAW -6.1
Ngangbam, C. (Chingthang) (1946) Tuesday 21 July 2026 WIN +5.4
Vreede van de, J.J. (Jim) (1942) Friday 17 July 2026 DRAW -6.0
Houweling, A.F. (Bert) (2027) Thursday 16 July 2026 DRAW -3.7
Schouten, H. (Henk) (2095) Wednesday 15 July 2026 DRAW -1.7
Vries de, L.J.A. (Leon) (2056) Tuesday 14 July 2026 DRAW -2.9
Oosten van, A. (Arend) (2078) Monday 13 July 2026 DRAW -2.2
IM Schouten, N. (Nico) (2072) Sunday 12 July 2026 DRAW -2.4
Perrenet, J.C. (Jacob) (1990) Saturday 11 July 2026 WIN +6.5
Kompaan, R. (Rick) (1967) Thursday 21 May 2026 WIN +6.4
Urk van, A. (Auke) (1928) Thursday 30 April 2026 WIN +5.6
Beuving, L. (Louis) (1989) Thursday 23 April 2026 WIN +7.3