KNSB FIDE
SJ

Stefan Jorritsma

Rated since January 2023

1904 Classic
1919 Rapid
1919 Blitz

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
BIK, W. (WOUTER) 2037
10703 KNSB competitie 2024-2025 Klasse 3 ronde 7 · Saturday 8 March 2025
BAKKER, R. (ROEL) 2011
12991 KNSB competitie 2025-2026 Klasse 4 ronde 7 · Saturday 7 February 2026
TUPET, GUILLAUME 2003
46ste Open Internationaal Toernooi Gent · Tuesday 22 July 2025
DARIE, A.C. (ADEN) 1969
10070 KNSB competitie 2024-2025 Klasse 3 ronde 5 · Saturday 14 December 2024
KAT, R. (RUDOLF) 1966
11891 NHSB-competitie 2025-2026 Klasse 1B t/m 26-09-2025 · Thursday 25 September 2025
Worst losses
DELENS, YOREN 1431
44ste Open Internationaal toernooi Gent 2023 · Sunday 16 July 2023
VYAS, ALISHA 1643
44ste Open Internationaal toernooi Gent 2023 · Monday 17 July 2023
ATTINGER, R.R. (ROMAN) 1735
6418 Tata Steel Chess Tournament 2023 Tienkampen · Monday 23 January 2023
BURER, A.R.M. (AUDRY) 1751
7620 Tata Steel Chess Tournament 2024 Tienkampen · Tuesday 23 January 2024
VERKOOIJEN, P. (PAUL) 1753
6641 NHSB-competitie 2022-2023 Klasse 1B t/m februari · Monday 30 January 2023
Tata Steel Chess Tournament 2026 Tienkampen Friday 16 January 2026 +2–2=5 -11.0
Tata Steel Chess Tournament 2025 Tienkampen Friday 17 January 2025 +4–3=1 +14.2
Tata Steel Chess Tournament 2024 Tienkampen Friday 12 January 2024 +3–4=2 +9.0
Tata Steel Chess Tournament 2023 Tienkampen Friday 13 January 2023 +7–1=0 +58.4
KNSB competitie 2025-2026 Klasse 4 ronde 9 Saturday 20 September 2025 +0–1=0 -15.0
KNSB competitie 2025-2026 Klasse 4 ronde 6 Saturday 20 September 2025 +0–2=0 -15.4
KNSB competitie 2025-2026 Klasse 4 ronde 8 Saturday 20 September 2025 +0–0=2 -0.6
KNSB competitie 2025-2026 Klasse 4 ronde 7 Saturday 20 September 2025 +1–0=0 +15.5
KNSB competitie 2025-2026 Klasse 4 ronde 5 Saturday 20 September 2025 +0–1=0 -13.1
KNSB competitie 2025-2026 Klasse 4 Ronde 4 Saturday 20 September 2025 +1–0=0 +9.2
KNSB competitie 2025-2026 Klasse 4 ronde 3 Saturday 20 September 2025 +1–0=0 +11.3
KNSB competitie 2025-2026 Klasse 4 ronde 2 Saturday 20 September 2025 +0–0=1 +3.1
KNSB competitie 2025-2026 Klasse 4 ronde 1 Saturday 20 September 2025 +1–0=0 +11.7
NHSB-competitie 2025-2026 Topklasse t/m 19-04-2026 Monday 1 September 2025 +0–1=0 -12.1
NHSB-competitie 2025-2026 Klasse 1B t/m 05-04-2026 Monday 1 September 2025 +1–0=0 +12.1
NHSB-competitie 2025-2026 Klasse 1B t/m 15-03-2026 Monday 1 September 2025 +0–0=2 +7.2
NHSB-competitie 2025-2026 Zilver t/m 08-03-2026 Monday 1 September 2025 +0–0=2 +3.0
NHSB-competitie 2025-2026 Goud t/m 01-03-2026 Monday 1 September 2025 +0–0=2 +4.8
NHSB-competitie 2025-2026 Klasse 1B t/m 22-02-2026 Monday 1 September 2025 +0–1=0 -10.7
NHSB-competitie 2025-2026 Zilver t/m 18-01-2026 Monday 1 September 2025 +0–0=1 -2.8
NHSB-competitie 2025-2026 Klasse 1B t/m 07-12-2025 Monday 1 September 2025 +0–1=0 -10.5
NHSB-competitie 2025-2026 Klasse 1B t/m 16-11-2025 Monday 1 September 2025 +0–1=0 -12.8
NHSB-competitie 2025-2026 Zilver t/m 09-11-2025 Monday 1 September 2025 +0–0=1 -3.3
NHSB-competitie 2025-2026 Topklasse t/m 19-10-2025 Monday 1 September 2025 +0–1=0 -11.1
NHSB-competitie 2025-2026 Klasse 1B t/m 12-10-2025 Monday 1 September 2025 +1–0=0 +10.8
NHSB-competitie 2025-2026 Klasse 1B t/m 26-09-2025 Monday 1 September 2025 +1–0=0 +13.8
NHSB-competitie 2025-2026 Topklasse t/m 26-09-2025 Monday 1 September 2025 +0–1=0 -8.6
46ste Open Internationaal Toernooi Gent Saturday 19 July 2025 +3–2=2 +11.4
KNSB competitie 2024-2025 Klasse 3 ronde 9 Saturday 21 September 2024 +0–1=0 -5.2
KNSB competitie 2024-2025 Klasse 3 ronde 8 Saturday 21 September 2024 +0–1=0 -11.5
KNSB competitie 2024-2025 Klasse 3 ronde 7 Saturday 21 September 2024 +1–0=0 +17.4
KNSB competitie 2024-2025 Klasse 3 ronde 6 Saturday 21 September 2024 +0–1=0 -13.9
KNSB competitie 2024-2025 Klasse 3 ronde 5 Saturday 21 September 2024 +1–0=0 +17.0
KNSB competitie 2024-2025 Klasse 3 ronde 4 Saturday 21 September 2024 +0–1=0 -4.7
KNSB competitie 2024-2025 Klasse 3 ronde 3 + inhaalwedstrijd ronde 1 Saturday 21 September 2024 +0–0=1 +9.6
KNSB competitie 2024-2025 Klasse 3 ronde 2 Saturday 21 September 2024 +0–1=0 -11.4
KNSB competitie 2024-2025 Klasse 3 ronde 1 Saturday 21 September 2024 +0–1=0 -6.5
NHSB-competitie 2024-2025 Zilver t/m 18-05-2025 Sunday 1 September 2024 +0–1=0 -9.5
NHSB-competitie 2024-2025 Zilver t/m 27-04-2025 Sunday 1 September 2024 +1–0=0 +8.2
NHSB-competitie 2024-2025 Topklasse t/m 27-04-2025 Sunday 1 September 2024 +0–0=1 +8.4
NHSB-competitie 2024-2025 Klasse 2D t/m 06-04-2025 Sunday 1 September 2024 +1–0=0 +8.4
NHSB-competitie 2024-2025 Zilver t/m 09-03-2025 Sunday 1 September 2024 +1–0=0 +8.5
NHSB-competitie 2024-2025 Klasse 2D t/m 26-02-2025 Sunday 1 September 2024 +1–0=0 +11.4
NHSB-competitie 2024-2025 Topklasse t/m 12-01-2025 Sunday 1 September 2024 +1–0=0 +14.6
NHSB-competitie 2024-2025 Klasse 2D t/m 15-12-2024 Sunday 1 September 2024 +1–0=0 +13.9
NHSB-competitie 2024-2025 Klasse 2D t/m 28-11-2024 Sunday 1 September 2024 +0–0=1 -1.8
NHSB-competitie 2024-2025 Klasse 2D t/m 26-10-2024 Sunday 1 September 2024 +0–1=0 -13.7
NHSB-competitie 2024-2025 Topklasse t/m 26-10-2024 Sunday 1 September 2024 +0–1=0 -1.5
45ste Open Internationaal Toernooi Gent Saturday 20 July 2024 +3–3=2 -1.8
KNSB competitie 2023-2024 Klasse 3 ronde 8 Saturday 16 September 2023 +1–0=0 +5.0
KNSB competitie 2023-2024 Klasse 3 ronde 7 Saturday 16 September 2023 +0–1=0 -5.6
KNSB competitie 2023-2024 Klasse 3 ronde 6 Saturday 16 September 2023 +0–1=0 -2.5
KNSB competitie 2023-2024 Klasse 3 ronde 5 Saturday 16 September 2023 +1–0=0 +18.7
KNSB competitie 2023-2024 Klasse 3 ronde 4 Saturday 16 September 2023 +0–1=0 -6.7
KNSB competitie 2023-2024 Klasse 3 ronde 2 Saturday 16 September 2023 +0–1=0 -8.9
KNSB competitie 2023-2024 Klasse 2 ronde 1 Saturday 16 September 2023 +0–1=0 -2.4
NHSB-competitie 2023-2024 Klasse 1B t/m 26-05-2024 Friday 1 September 2023 +1–0=0 +7.5
NHSB-competitie 2023-2024 Klasse 1B t/m 26-03-2024 Friday 1 September 2023 +1–0=0 +12.0
NHSB-competitie 2023-2024 Klasse 1B t/m 23-02-2024 Friday 1 September 2023 +0–1=0 -11.9
NHSB-competitie 2023-2024 Topklasse t/m 26-01-2024 Friday 1 September 2023 +0–0=1 +10.5
NHSB-competitie 2023-2024 Klasse 1B t/m 26-01-2024 Friday 1 September 2023 +0–1=0 -7.2
NHSB-competitie 2023-2024 Klasse 1B t/m 26-12-2023 Friday 1 September 2023 +1–0=0 +13.2
NHSB-competitie 2023-2024 Klasse 1B t/m oktober Friday 1 September 2023 +0–1=0 -7.3
NHSB-competitie 2023-2024 Topklasse t/m oktober Friday 1 September 2023 +0–1=0 -9.1
44ste Open Internationaal toernooi Gent 2023 Saturday 15 July 2023 +4–3=1 -43.0
KNSB competitie 2022-2023 Klasse 3 ronde 9 Saturday 17 September 2022 +0–1=0 -12.4
KNSB competitie 2022-2023 Klasse 3 ronde 8 Saturday 17 September 2022 +0–0=1 +1.5
KNSB competitie 2022-2023 Klasse 3 ronde 7 Saturday 17 September 2022 +0–1=0 -4.5
KNSB competitie 2022-2023 Klasse 3 ronde 6 Saturday 17 September 2022 +0–1=0 -11.4
KNSB competitie 2022-2023 Klasse 3 ronde 5 Saturday 17 September 2022 +0–0=1 +2.7
KNSB competitie 2022-2023 Klasse 3 ronde 4 Saturday 17 September 2022 +0–1=0 -9.0
NHSB-competitie 2022-2023 Topklasse t/m april Thursday 1 September 2022 +0–1=0 -6.8
NHSB-competitie 2022-2023 Klasse 1B t/m maart Thursday 1 September 2022 +1–0=0 +7.3
NHSB-competitie 2022-2023 Beker t/m maart Thursday 1 September 2022 +0–0=1 +1.5
NHSB-competitie 2022-2023 Klasse 1B t/m februari Thursday 1 September 2022 +0–2=0 -25.5
NHSB-competitie 2022-2023 Klasse 1B t/m december Thursday 1 September 2022 +0–1=0 -9.6

Rating History

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Peak Ratings

Classic 1952 Dec. 1, 2025
Rapid 1919 March 1, 2026
Blitz 1919 March 1, 2026

Games

Wins 47
Losses 54
Draws 31
Win Rate 36%

Performance by Color

Color Wins Draws Losses Win Rate
White 18 11 8 49%
Black 29 20 46 31%

Recent Matches

Pilon, J. (Jeffrey) (1932) Friday 17 April 2026 LOSS -12.1
Bolhuis, R. (Ridens) (1846) Saturday 11 April 2026 LOSS -15.0
Jong de, B.L. (Ben) (1906) Tuesday 31 March 2026 WIN +12.1
Otten, C.J. (Colleen) (2063) Saturday 28 March 2026 LOSS -7.7
Otten, C.J. (Colleen) (2063) Saturday 28 March 2026 LOSS -7.7
Hensbergen, W. (Willem) (2025) Thursday 12 March 2026 DRAW +3.6
Hensbergen, W. (Willem) (2025) Thursday 12 March 2026 DRAW +3.6
Seelemeijer, J. (Jasper) (1910) Saturday 7 March 2026 DRAW -0.3
Seelemeijer, J. (Jasper) (1910) Saturday 7 March 2026 DRAW -0.3
Mulder, M. (Mick) (1962) Tuesday 3 March 2026 DRAW +1.5
Mulder, M. (Mick) (1962) Tuesday 3 March 2026 DRAW +1.5
Visser, S.J.J. (Sem-Joshua) (1995) Friday 27 February 2026 DRAW +2.4
Visser, S.J.J. (Sem-Joshua) (1995) Friday 27 February 2026 DRAW +2.4
Duijvesteijn, A. (André) (1976) Monday 16 February 2026 LOSS -10.7
Bakker, R. (Roel) (2011) Saturday 7 February 2026 WIN +15.5
Desportes, Gerard (1861) Sunday 1 February 2026 DRAW -2.3
Groen, C. (Cor) (1841) Saturday 31 January 2026 WIN +9.5
Buitink, A.J. (Bert) (1921) Friday 30 January 2026 DRAW -0.2
Berg van den, J. (Jaap) (1909) Wednesday 28 January 2026 WIN +11.8
Ebels, T.F. (Theo) (1934) Tuesday 27 January 2026 DRAW +0.2