KNSB FIDE
BJ

Bas Jonkers

Rated since March 2026

1889 Classic
1889 Rapid
1889 Blitz

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
VAN DAEL, JONAS 1922
10472 Tata Steel Chess Tournament 2026 Dagvierkampen · Tuesday 20 January 2026
ZWIETEN VAN, R. (REMY) 1897
12798 SGA Competitie 2025-2026 Zilveren Beker kwartfinale · Friday 9 January 2026
HOEGEN DIJKHOF, H. (HARRALD) 1893
11617 UniClass Science Park Amsterdam Schaaktoernooi Dagvierkampen · Sunday 13 July 2025
HEIJLMAN, M. (MARTIN) 1878
12197 SGA Competitie 2025-2026 Zilveren Beker ronde 1 · Monday 27 October 2025
KUIPER, W. (WILLEM) 1804
10472 Tata Steel Chess Tournament 2026 Dagvierkampen · Monday 19 January 2026
Worst losses
ZUIDBERG, K. (KOEN) 1892
10472 Tata Steel Chess Tournament 2026 Dagvierkampen · Wednesday 21 January 2026
KAMP VAN DE, R.C. (ROB) 1901
11617 UniClass Science Park Amsterdam Schaaktoernooi Dagvierkampen · Tuesday 8 July 2025
BOONSTRA, J. (JASPER) 1939
12190 SGA Competitie 2025-2026 1e Klasse B ronde 1 · Friday 17 October 2025
BOLDERMAN, J. (JOPPE) 1944
13334 17e Kattenburger Open Toernooi 17e Kattenburger Open Ronde 5 · Sunday 22 March 2026
HUFENER, T. (THOMAS) 1961
13435 SGA Competitie 2025-2026 Zilveren Beker halve finale · Friday 6 March 2026
Tata Steel Chess Tournament 2026 Dagvierkampen Friday 16 January 2026 +2–1=0 +11.1
UniClass Science Park Amsterdam Schaaktoernooi Dagvierkampen Saturday 5 July 2025 +1–1=1 -0.6
13e Best of the West Groep A, ronde 5 Saturday 18 October 2025 +1–0=0
13e Best of the West Groep A, ronde 4 Saturday 18 October 2025 +0–0=1 -5.4
13e Best of the West Groep A, ronde 3 Saturday 18 October 2025 +0–0=1 -1.9
13e Best of the West Groep A, ronde 2 Saturday 18 October 2025 +0–0=1 -4.2
17e Kattenburger Open Toernooi 17e Kattenburger Open Ronde 6 Sunday 12 October 2025 +1–0=0
17e Kattenburger Open Toernooi 17e Kattenburger Open Ronde 5 Sunday 12 October 2025 +0–1=0 -11.6
17e Kattenburger Open Toernooi 17e Kattenburger Open Ronde 4 Sunday 12 October 2025 +1–0=0 +8.4
17e Kattenburger Open Toernooi Ronde 3 Sunday 12 October 2025 +0–1=0 -9.4
17e Kattenburger Open Toernooi Ronde 1 Sunday 12 October 2025 +1–0=0 +4.4
SGA Competitie 2025-2026 1e Klasse B ronde 6 Wednesday 1 October 2025 +1–0=0 +6.9
SGA Competitie 2025-2026 1e Klasse B ronde 5 Wednesday 1 October 2025 +0–0=1 -0.4
SGA Competitie 2025-2026 Zilveren Beker halve finale Wednesday 1 October 2025 +0–1=0 -11.0
SGA Competitie 2025-2026 1e Klasse B ronde 4 Wednesday 1 October 2025 +0–0=1 +0.5
SGA Competitie 2025-2026 Zilveren Beker kwartfinale Wednesday 1 October 2025 +1–0=0 +12.9
SGA Competitie 2025-2026 Hoofdklasse ronde 3 Wednesday 1 October 2025 +0–1=0 -10.4
SGA Competitie 2025-2026 1e Klasse B ronde 2 Wednesday 1 October 2025 +0–0=1 -0.5
SGA Competitie 2025-2026 Hoofdklasse ronde 2 Wednesday 1 October 2025 +0–1=0 -3.9
SGA Competitie 2025-2026 Zilveren Beker ronde 1 Wednesday 1 October 2025 +1–0=0 +11.7
SGA Competitie 2025-2026 1e Klasse B ronde 1 Wednesday 1 October 2025 +0–1=0 -11.2
16e Kattenburger Open Toernooi Groep A Monday 1 September 2025 +1–0=0 +7.9
SGA Competitie 2024-2025 Hoofdklasse ronde 7 Monday 30 September 2024 +0–1=0 -10.0

Rating History

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Peak Ratings

Classic 1917 March 1, 2026
Rapid 1917 March 1, 2026
Blitz 1917 March 1, 2026

Games

Wins 11
Losses 9
Draws 7
Win Rate 41%

Performance by Color

Color Wins Draws Losses Win Rate
White 6 3 2 55%
Black 5 4 7 31%

Recent Matches

Oosterink, T.J. (Timo) Sunday 19 April 2026 WIN
Nijhuis, M. (Maurits) Saturday 18 April 2026 WIN
Tawfiq, A.I. (Kareem) (1718) Friday 10 April 2026 WIN +6.9
Bolderman, J. (Joppe) (1944) Sunday 22 March 2026 LOSS -11.6
Egdell, B.J. (Brian) (1907) Wednesday 18 March 2026 DRAW -0.4
Schol, J. (Jan) (1754) Saturday 14 March 2026 DRAW -5.4
Hufener, T. (Thomas) (1961) Friday 6 March 2026 LOSS -11.0
Vlis van der, P. (Peter) (1854) Saturday 21 February 2026 DRAW -1.9
Tjin a Lien, I.T.L. (Ike) (1789) Sunday 15 February 2026 WIN +8.4
Ozkoc, S. (Serkan) (1923) Friday 13 February 2026 DRAW +0.5
Zuidberg, K. (Koen) (1892) Wednesday 21 January 2026 LOSS -12.3
Van Dael, Jonas (1922) Tuesday 20 January 2026 WIN +13.8
Kuiper, W. (Willem) (1804) Monday 19 January 2026 WIN +9.7
Zwieten van, R. (Remy) (1897) Friday 9 January 2026 WIN +12.9
Argirov, D. (Dimitar) (1972) Thursday 11 December 2025 LOSS -10.4
Michel, S. (Steve) (2000) Sunday 7 December 2025 LOSS -9.4
Zhang, J. (Jinchen) (1783) Saturday 29 November 2025 DRAW -4.2
Tromp, J.T. (John) (1892) Friday 14 November 2025 DRAW -0.5
Schol, J. (Jan) (1770) Sunday 9 November 2025 WIN +7.9
Vries de, J.A. (Joel) (2196) Friday 7 November 2025 LOSS -3.9