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Harmen Jonkman
Photo courtesy of  
Number of games in database: 336
Years covered: 1990 to 2017
Last FIDE rating: 2384 (2368 blitz)
Highest rating achieved in database: 2520

Overall record: +120 -126 =89 (49.1%)*
   * Overall winning percentage = (wins+draws/2) / total games in the database. 1 exhibition game, blitz/rapid, odds game, etc. is excluded from this statistic.

With the White pieces:
 Sicilian (53) 
    B22 B50 B30 B29 B31
 French Defense (36) 
    C02 C05 C07 C03
 King's Gambit Accepted (15) 
    C33 C34 C37 C36 C38
 Caro-Kann (12) 
    B18 B15 B12 B17
 Alekhine's Defense (9) 
    B04 B05 B03 B02
 Four Knights (8) 
    C48 C49
With the Black pieces:
 Ruy Lopez (35) 
    C67 C65 C63 C77 C91
 Queen's Gambit Accepted (33) 
    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 C57 C58
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
   B Avrukh vs Jonkman, 2005 0-1
   Jonkman vs Blatny, 2002 1-0
   Jonkman vs Y Nahutin, 2004 1-0
   Jonkman vs Naiditsch, 2003 1-0
   R Hendriks vs Jonkman, 2001 0-1
   Jonkman vs L Pliester, 2005 1-0

NOTABLE TOURNAMENTS: [what is this?]
   Corus Group B (2002)
   Corus Group C (2005)
   World Open: Open Section (2003)
   Corus Group C (2006)
   E.U. Championship and Cork Chess Congress (2005)
   Corus Group C (2007)
   Corus Group B (2003)
   5th Individual European Chess Championship (2004)
   Amsterdam Chess Tournament (2005)
   Abu Dhabi Masters (2017)

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

   🏆 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, 44 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 14; games 1-25 of 336  PGN Download
Game  ResultMoves YearEvent/LocaleOpening
1. Jonkman vs H Vedder  0-1531990NED-ch op U20C02 French, Advance
2. Jonkman vs Garcia  0-1481990Haarlem Noord-Hol.ChB22 Sicilian, Alapin
3. Garcia vs Jonkman  1-0411992Den HaagA07 King's Indian Attack
4. Jonkman vs Plachetka  0-1311993Cannes op2B22 Sicilian, Alapin
5. W Schmidt vs Jonkman  ½-½761993Dresden opD39 Queen's Gambit Declined, Ragozin, Vienna Variation
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. Jonkman vs F Kroeze  ½-½491993Leeuwarden opC36 King's Gambit Accepted, Abbazia Defense
9. J Hania vs Jonkman 0-1401993Leeuwarden opC25 Vienna
10. Jonkman vs B Finegold  0-1611993Groningen Chess Festival; GM openB22 Sicilian, Alapin
11. Jonkman vs Pavasovic  1-0331994It cC31 King's Gambit Declined, Falkbeer Counter Gambit
12. Jonkman vs L B Hansen  0-1361994Hoogovens-BC38 King's Gambit Accepted
13. Jonkman vs B Trabert  0-1401994It cC34 King's Gambit Accepted
14. Sutovsky vs Jonkman 1-0601994GroningenC47 Four Knights
15. C Marcelin vs Jonkman  0-1721994GroningenC50 Giuoco Piano
16. Jonkman vs R A Ziatdinov 0-1221994Ch Netherlands (open), VIII, AC34 King's Gambit Accepted
17. Jonkman vs Wojtkiewicz  ½-½731994Hoogovens-BB22 Sicilian, Alapin
18. Jonkman vs F Kroeze  0-1691994Semi-finals Dutch championshipC30 King's Gambit Declined
19. Jonkman vs F Kroeze  0-1661994Groningen opC37 King's Gambit Accepted
20. Jonkman vs W Zagema  ½-½771994Groningen opC37 King's Gambit Accepted
21. R Janssen vs Jonkman  0-1231995Soest opC31 King's Gambit Declined, Falkbeer Counter Gambit
22. Jonkman vs Barsov  0-1491995Soest opC02 French, Advance
23. Jonkman vs T Ellenbroek  1-0341995Leeuwarden opC30 King's Gambit Declined
24. Kupreichik vs Jonkman  1-0451995Groningen opC63 Ruy Lopez, Schliemann Defense
25. Jonkman vs G Homs  0-1321996It openC34 King's Gambit Accepted
 page 1 of 14; games 1-25 of 336  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.

Premium Chessgames Member
  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. :)
May-30-11  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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