Bar Blitz KNSB FIDE
JB

Jeroen Bollaart

Rated since October 2006

1923 Classical
1930 Rapid
Jeroen's accounts
FIDE KNSB

The good & the bad

Best wins
Harmsen, Michiel 1989
Tata Steel Chess 2026 - Tienkampen · 2026-01-23
Conde Gomez, Diego 1976 1975
Tata Steel Chess 2026 - Tienkampen · 2026-01-23
Lee, Jungbin 1907
Tata Steel Chess 2026 - Tienkampen · 2026-01-23
Bettman, Jan 1885
51e Open Kampioenschap van Utrecht - Groep B · 2026-05-15
De Jong, Mika 1862
51e Open Kampioenschap van Utrecht - Groep B · 2026-05-15
Worst losses
Mendelsohn, Saffran 1767
51e Open Kampioenschap van Utrecht - Groep B · 2026-05-15
Van Den Hof, Jesse 1881
51e Open Kampioenschap van Utrecht - Groep B · 2026-05-15
Bouwens, Harko 1967
Tata Steel Chess 2026 - Tienkampen · 2026-01-23
Baarslag, Ed 2015
Tata Steel Chess 2026 - Tienkampen · 2026-01-23

FIDE Tournaments

51e Open Kampioenschap van Utrecht - Groep B standard 2026-05-15 +3–2=1 -5.8
Tapijtgigant Open ASK 2026 - Group B standard 2026-04-04 +2–0=3 +14.8
Dutch Team Competition - klasse 4 Round 9 standard 2026-04-11 +0–0=1 +6.0
Dutch Team Competition - klasse 4 Round 6 standard 2026-03-28 +0–0=1 +3.4
Tata Steel Chess 2026 - Tienkampen standard 2026-01-23 +3–2=2 +27.2
Dutch Team Competition - klasse 4 Round 7 standard 2026-02-07 +0–0=1 +3.4
HSG Open 2026 Groep B Friday 19 June 2026 +2–0=4 -1.5
51e Open Kampioenschap van Utrecht Groep B Friday 15 May 2026 +3–2=1 -3.2
Tata Steel Chess Tournament 2026 Tienkampen Friday 16 January 2026 +3–2=3 +27.0
40th European Club Cup (open) Sunday 19 October 2025 +1–4=1 -48.8
Oscar Romero Open Hoorns Kampioenschap 2025 + PK NHSB Groep A Friday 22 August 2025 +0–2=3 -4.7
UniClass Science Park Amsterdam Schaaktoernooi Dagvierkampen Saturday 5 July 2025 +1–1=1 +1.1
UniClass Science Park Amsterdam Schaaktoernooi Weekendvierkampen Saturday 5 July 2025 +1–1=1 +0.1
HSG Open 2025 Groep B Friday 20 June 2025 +3–2=0 -15.7
50e Open Kampioenschap van Utrecht Groep A Friday 30 May 2025 +2–2=0 +13.4
TAPIJTGIGANT OPEN ASK 2025 Groep B Saturday 19 April 2025 +2–1=2 +8.9
Tata Steel Chess Tournament 2025 Tienkampen Friday 17 January 2025 +4–1=3 +29.1
Chess Festival Groningen Vierkampen Saturday 21 December 2024 +2–1=0 +11.0
39th European Club Cup Sunday 20 October 2024 +1–4=1 -12.5
Amsterdam Science Park Chess Tournament Groep B Saturday 13 July 2024 +1–1=3 +1.9
HSG Open 2024 Groep A Friday 21 June 2024 +0–5=0 -39.7
Tata Steel Chess Tournament 2024 Tienkampen Friday 12 January 2024 +2–5=2 -21.7
Hoogeveen 2023 Middaggroep Groep A Saturday 21 October 2023 +2–2=4 -48.3
HSG Open 2023 Groep A Friday 23 June 2023 +2–4=0 -15.0
Open Kampioenschap van Utrecht Groep A Friday 19 May 2023 +2–3=0 -2.2

Rating History

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Peak Ratings

Classical 1959
Rapid 1937

Games (recent periods)

Wins 8
Losses 4
Draws 9
Win Rate 38%

Performance by Color

ColorWinsDrawsLossesWin Rate
White 4 4 1 44%
Black 4 5 3 33%

All-time Games (from rating history)

Classical 376
Rapid 5
Blitz 0

Recent Matches

Wagenaar, Harm Theo (1867) 2026-05-15 DRAW -2.2
De Jong, Mika (1862) 2026-05-15 WIN +7.8
Mendelsohn, Saffran (1767) 2026-05-15 LOSS -14.6
Van Den Hof, Jesse (1881) 2026-05-15 LOSS -11.8
Kasomoulis, Nikos (1818) 2026-05-15 WIN +6.6
Bettman, Jan (1885) 2026-05-15 WIN +8.4
Luong, Thao (1855) 2026-04-04 DRAW -1.8
Copier, Richard (1854) 2026-04-04 WIN +8.0
Mastop, Guido (1781) 2026-04-04 WIN +6.2
Roebers, Bregje (1945) 2026-04-04 DRAW +0.6
Lenting, Roan (1986) 2026-04-04 DRAW +1.8
IM Borm, F.w.m. (frans) (2167) 2026-04-11 DRAW +6.0
Stap, C.r.m. (kees) (2047) 2026-03-28 DRAW +3.4
Harmsen, Michiel (1989) 2026-01-23 WIN +12.8
Lee, Jungbin (1907) 2026-01-23 WIN +10.6
Conde Gomez, Diego 1976 (1975) 2026-01-23 WIN +12.4
Baarslag, Ed (2015) 2026-01-23 LOSS -6.6
CM Meier, David Geffrey (2037) 2026-01-23 DRAW +4.0
Bouwens, Harko (1967) 2026-01-23 LOSS -7.8
Jactel, Nicolas (1954) 2026-01-23 DRAW +1.8
Hooft `t, D.l.a. (diederic) (2014) 2026-02-07 DRAW +3.4