Grandmaster

Jonkman, Harmen

FIDE ID 1002708

Games

Wins

Draws

Losses

31%

Score

Peak rating2351

Latest rating2310

First seenFeb 3, 2023

Last seenApr 16, 2026

Recent games

Date	White	Result	Black	Event	Opening
Apr 16, 2026	Jonkman	0–1	Bersamina	23rd Bangkok Chess Club Open 2026	Sicilian Defense: Old Sicilian
Oct 25, 2024	Jonkman	1–0	Grand	39th European Chess Club Cup	Caro-Kann Defense: Exchange Variation
Oct 24, 2024	Dragicevic	1–0	Jonkman	39th European Chess Club Cup	Center Game: Berger Variation
Oct 23, 2024	Rigo	1–0	Jonkman	39th European Chess Club Cup	Ruy Lopez: Berlin Defense, Rio Gambit Accepted
Oct 22, 2024	Jonkman	1–0	Zlatkov	39th European Chess Club Cup	Sicilian Defense: Delayed Alapin Variation, with d6
Oct 21, 2024	Jonkman	1–0	Van de Lagemaat	39th European Chess Club Cup	Queen's Pawn Game: London System
Oct 20, 2024	Tabatabaei	1–0	Jonkman	Round 1: Tabatabaei, M. Amin - Jonkman, Harmen	Queen's Gambit Declined: Exchange Variation, Positional Variation
Jun 12, 2023	Jonkman	0–1	Sasikiran	Aimchess Rapid Play-In \| Champions Chess Tour	East Indian Defense
Jun 12, 2023	Jonkman	0–1	Koellner	Aimchess Rapid Play-In \| Champions Chess Tour	Pirc Defense
Jun 12, 2023	Jonkman	1–0	Alsina Leal	Aimchess Rapid Play-In \| Champions Chess Tour	Sicilian Defense: Old Sicilian
Jun 12, 2023	Mekhitarian	1–0	Jonkman	Aimchess Rapid Play-In \| Champions Chess Tour	Queen's Gambit Accepted: Classical Defense, Main Line
Jun 12, 2023	Swiercz	1–0	Jonkman	Aimchess Rapid Play-In \| Champions Chess Tour	Ruy Lopez: Berlin Defense, l'Hermet Variation, Berlin Wall Defense
Jun 12, 2023	Iskusnyh	1–0	Jonkman	Aimchess Rapid Play-In \| Champions Chess Tour	Queen's Gambit Accepted: Classical Defense, Main Line
May 29, 2023	Jonkman	½–½	Gurevich	Limburg Open	Queen's Pawn Game: Zukertort Variation
May 28, 2023	Jonkman	*	Pruijssers	Limburg Open	?
May 28, 2023	Jeitz	*	Jonkman	Limburg Open	?
May 27, 2023	Jonkman	0–1	Pruijssers	Limburg Open	London System
Apr 28, 2023	Maisuradze	0–1	Jonkman	II CHESSABLE SUNWAY FORMENTERA	Bogo-Indian Defense: Grünfeld Variation
Apr 27, 2023	Jonkman	½–½	Sahithi	II CHESSABLE SUNWAY FORMENTERA	Queen's Pawn Game: London System
Apr 26, 2023	Panda	1–0	Jonkman	II CHESSABLE SUNWAY FORMENTERA	Queen's Gambit Accepted: Alekhine Defense, Haberditz Variation
Apr 25, 2023	Jonkman	1–0	Southcott-Moyers	II CHESSABLE SUNWAY FORMENTERA	Queen's Pawn Game: London System
Apr 24, 2023	Doluhanova	1–0	Jonkman	II CHESSABLE SUNWAY FORMENTERA	French Defense: Exchange Variation
Apr 22, 2023	Mahitosh	0–1	Jonkman	II CHESSABLE SUNWAY FORMENTERA	French Defense: Exchange Variation
Apr 21, 2023	Jonkman	0–1	Vaishali	II CHESSABLE SUNWAY FORMENTERA	Queen's Pawn Game: Chigorin Variation
Apr 20, 2023	Jonkman	0–1	Fedoseev	Formentera 2023	Indian Defense: Knights Variation
Apr 19, 2023	Halmeenmaki	0–1	Jonkman	Formentera 2023	King's Indian Attack
Apr 18, 2023	Jonkman	½–½	Bernadskiy	Formentera 2023	Queen's Gambit Declined: Ragozin Defense
Feb 3, 2023	Jonkman	0–1	Mikaelyan	Airthings Masters Play-In \| Champions Chess Tour	Sicilian Defense: Alapin Variation, Stoltz Attack
Feb 3, 2023	Jonkman	1–0	Iskusnyh	Airthings Masters Play-In \| Champions Chess Tour	French Defense: Advance Variation, Paulsen Attack
Feb 3, 2023	Jonkman	0–1	Tristan	Airthings Masters Play-In \| Champions Chess Tour	King's Gambit Accepted: Schallopp Defense
Feb 3, 2023	Timofeev	1–0	Jonkman	Airthings Masters Play-In \| Champions Chess Tour	Ruy Lopez: Berlin Defense, Berlin Wall
Feb 3, 2023	Swiercz	1–0	Jonkman	Airthings Masters Play-In \| Champions Chess Tour	Ruy Lopez: Berlin Defense
Feb 3, 2023	Kravtsiv	1–0	Jonkman	Airthings Masters Play-In \| Champions Chess Tour	Three Knights Opening
Feb 3, 2023	Azarov	1–0	Jonkman	Airthings Masters Play-In \| Champions Chess Tour	Ruy Lopez: Open Berlin Defense, l'Hermet Variation