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Harmen Jonkman
Photo courtesy of  
Number of games in database: 344
Years covered: 1990 to 2017
Last FIDE rating: 2385 (2368 blitz)
Highest rating achieved in database: 2520

Overall record: +122 -129 =91 (49.0%)*
   * Overall winning percentage = (wins+draws/2) / total games in the database. 2 exhibition games, blitz/rapid, odds games, etc. are excluded from this statistic.

With the White pieces:
 Sicilian (57) 
    B22 B50 B31 B30 B29
 French Defense (36) 
    C02 C03 C07 C05
 King's Gambit Accepted (16) 
    C33 C34 C37 C36 C38
 Caro-Kann (12) 
    B18 B17 B12 B15
 Alekhine's Defense (10) 
    B04 B05 B03 B02
 King's Gambit Declined (8) 
    C30 C31 C32
With the Black pieces:
 Ruy Lopez (35) 
    C67 C65 C63 C77 C75
 Queen's Gambit Accepted (34) 
    D20 D27 D26 D21 D22
 Queen's Gambit Declined (17) 
    D35 D39 D31 D30 D36
 Scotch Game (13) 
 Giuoco Piano (8) 
    C53 C50
 Two Knights (6) 
    C59 C56 C58 C57
Repertoire Explorer

NOTABLE GAMES: [what is this?]
   B Fijlstra vs Jonkman, 2000 0-1
   B de Jong-Muhren vs Jonkman, 2005 0-1
   Hector vs Jonkman, 2003 1/2-1/2
   Jonkman vs Y Nahutin, 2004 1-0
   B Avrukh vs Jonkman, 2005 0-1
   Jonkman vs Naiditsch, 2003 1-0
   Jonkman vs Blatny, 2002 1-0
   Jonkman vs L Pliester, 2005 1-0
   T Willemze vs Jonkman, 2007 0-1
   S Brynell vs Jonkman, 2007 0-1

NOTABLE TOURNAMENTS: [what is this?]
   Corus Group B (2002)
   Amsterdam Lost Boys Open (1998)
   Corus Group C (2005)
   E.U. Championship and Cork Chess Congress (2005)
   Corus Group C (2006)
   World Open: Open Section (2003)
   Corus Group C (2007)
   Corus Group B (2003)
   Lisbon op (2001)
   Reykjavik op 19th (2000)
   European Championship (2004)
   Amsterdam Chess Tournament (2005)
   European Championship (2000)
   Abu Dhabi Masters (2017)

GAME COLLECTIONS: [what is this?]
   2005 Corus (group C) by gauer
   Corus Group C 2005 by Tabanus
   Corus Group B 2002 by Tabanus
   2002 Corus (group B) by gauer

   🏆 21st Hoogeveen Open
   C Molenaar vs Jonkman (Oct-28-17) 1/2-1/2
   Jonkman vs E de Boer (Oct-27-17) 0-1
   S Colijn vs Jonkman (Oct-26-17) 1-0
   Jonkman vs L van Foreest (Oct-25-17) 1/2-1/2
   A Warakomska vs Jonkman (Oct-24-17) 0-1

Search Sacrifice Explorer for Harmen Jonkman
Search Google for Harmen Jonkman
FIDE player card for Harmen Jonkman

(born May-30-1975, 46 years old) Netherlands

[what is this?]
Grandmaster. Jonkman was Dutch Under-16 champion in 1991. He is pursuing a career in the IT sector and doesn't play a lot anymore.

 page 1 of 16; games 1-25 of 386  PGN Download
Game  ResultMoves YearEvent/LocaleOpening
1. Jonkman vs H Perez Garcia  0-1481990Haarlem Noord-Hol.ChB22 Sicilian, Alapin
2. Jonkman vs H Vedder  0-1531990NED-ch op U20C02 French, Advance
3. H Perez Garcia vs Jonkman  1-0411992Den HaagA07 King's Indian Attack
4. Jonkman vs T Hommeles  0-1671992NED-ch opC38 King's Gambit Accepted
5. Jonkman vs Plachetka  0-1311993Cannes op2B22 Sicilian, Alapin
6. D Postma vs Jonkman  0-1421993NED-ch U20C53 Giuoco Piano
7. Jonkman vs E Denayer 0-1271993Ostend opC32 King's Gambit Declined, Falkbeer Counter Gambit
8. W Schmidt vs Jonkman  ½-½761993Dresden opD39 Queen's Gambit Declined, Ragozin, Vienna Variation
9. Jonkman vs F Kroeze  ½-½491993Leeuwarden opC36 King's Gambit Accepted, Abbazia Defense
10. J Hania vs Jonkman 0-1401993Leeuwarden opC25 Vienna
11. Jonkman vs B Finegold  0-1611993Groningen OpenB22 Sicilian, Alapin
12. Ziatdinov vs Jonkman  1-0581993Groningen OpenC63 Ruy Lopez, Schliemann Defense
13. Jonkman vs L B Hansen  0-1361994Hoogovens-BC38 King's Gambit Accepted
14. Jonkman vs Ziatdinov 0-1221994Ch Netherlands (open), VIII, AC34 King's Gambit Accepted
15. Jonkman vs B Trabert  0-1401994It cC34 King's Gambit Accepted
16. Jonkman vs Pavasovic  1-0331994It cC31 King's Gambit Declined, Falkbeer Counter Gambit
17. Jonkman vs Wojtkiewicz  ½-½731994Hoogovens-BB22 Sicilian, Alapin
18. R Vedder vs Jonkman  0-1361994Donner Memorial OpenC63 Ruy Lopez, Schliemann Defense
19. Jonkman vs F Kroeze  0-1691994Semi-finals Dutch championshipC30 King's Gambit Declined
20. Sutovsky vs Jonkman 1-0601994Groningen OpenC47 Four Knights
21. Jonkman vs L Ismailova  1-0451994Groningen OpenC41 Philidor Defense
22. J Fries-Nielsen vs Jonkman  ½-½591994Groningen OpenD00 Queen's Pawn Game
23. Jonkman vs Ziatdinov  0-1401994Groningen OpenC41 Philidor Defense
24. C Marcelin vs Jonkman  0-1721994Groningen OpenC50 Giuoco Piano
25. Jonkman vs F Kroeze  0-1661994Groningen OpenC37 King's Gambit Accepted
 page 1 of 16; games 1-25 of 386  PGN Download
  REFINE SEARCH:   White wins (1-0) | Black wins (0-1) | Draws (1/2-1/2) | Jonkman wins | Jonkman loses  

Kibitzer's Corner
Apr-08-04  matein8: This GM has a very up-to-date chess calendar of events on his website:
Oct-15-04  Jesuitic Calvinist: I like Jonk's clear, classical approach. Look at those most popular openings - nothing strange or suspicious there. He is perhaps another I would put on the list of "average" GMs who can serve as good models for lower-ranked players.
Feb-09-05  fasting: his actual rating is 2399, which must be considered low for a GM?! But he is pretty active, he was in Corus Tournament Group C, and now the Aeroflot Open!
Dec-29-05  EmperorAtahualpa: GM Harmen Jonkman runs his own website at
Mar-31-06  scrambler: EmperorAtahualpa & matein8 Thanks for those links.
May-30-06  BIDMONFA: Harmen Jonkman


May-30-08  Lutwidge: Jonkman's openings are pretty much the same ones I play, which is probably why his rating's a little low for a GM. :)

Really, Jonkman, along with with his (to me) kindred spirit Hector, are two of my favorite masters, stylistically speaking.

May-30-08  brankat: Happy Birthday GM Jonkman!
Premium Chessgames Member
  wordfunph: GM Harmen Jonkman's ICC handle is Flycatcher.

Happy Birthday GM Jonkman!!!

Premium Chessgames Member
  whiteshark: Quote of the Day

" The greatest compliment one can pay a master is to compare him with Capablanca."

-- Chernev

Premium Chessgames Member
  Tabanus: <wordfunph: GM Harmen Jonkman's ICC handle is Flycatcher.>

Hmm. I'm out of here.

Feb-11-11  waddayaplay: Looks like he doesn't like draws. :)
Premium Chessgames Member
  redlance: Happy Birthday!!!
May-30-11  talisman: best bio on the jonk...happy birthday!!!!
Premium Chessgames Member
  juan31: A great player
May-30-16  TheFocus: Nicknamed "Sanford."

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