Zhaoqin Peng vs Harmen Jonkman
Corus Group C Wijk aan Zee NED round 4 2007.01.16
Queen’s Gambit Accepted: Classical Defense, Main Line 1-0

Harmen Jonkman vs Antoaneta Stefanova
Corus Group B Wijk aan Zee NED round 4 2002.01.19
Four Knights Game: Bardeleben Variation 1/2-1/2

Harmen Jonkman vs Rustam Mashrukovich Kasimdzhanov
Sonnevanck 8th Wijk aan Zee NED round 4 1999.11.06
French Defense: Advance Variation 0-1

Harmen Jonkman vs Sergei Tiviakov
Essent ch-NED Leeuwarden NED round 8 2002.06.28
Sicilian Defense: Alapin Variation 0-1

Parimarjan Negi vs Harmen Jonkman
Corus Group C Wijk aan Zee NED round 11 2005.01.28
Ruy Lopez: Closed, Bogoljubov Variation 1-0

Richard Vedder vs Harmen Jonkman
Donner Memorial Open Amsterdam NED round 5 1994.08.23
Ruy Lopez: Schliemann Defense 0-1

Alexey Nazirzhonovich Korotylev vs Harmen Jonkman
Corus Group C Wijk aan Zee NED round 2 2005.01.16
English Opening: Agincourt Defense 1/2-1/2

Harmen Jonkman vs Zhaoqin Peng
Corus Group B Wijk aan Zee NED round 2 2002.01.16
French Defense: Advance Variation 1-0

Harmen Jonkman vs Parimarjan Negi
Corus Group C Wijk aan Zee NED round 9 2007.01.23
Sicilian Defense: Alapin Variation 0-1

Sergey Karjakin vs Harmen Jonkman
Corus Wijk aan Zee NED round 3 2003.01.14
Ruy Lopez: Berlin Defense, Berlin Wall 1-0