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Harmen Jonkman
Photo courtesy of  
Number of games in database: 336
Years covered: 1990 to 2017
Last FIDE rating: 2404 (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 B31 B30 B29
 French Defense (36) 
    C02 C07 C03 C05
 King's Gambit Accepted (15) 
    C33 C34 C37 C36 C38
 Caro-Kann (12) 
    B18 B17 B15 B12
 Alekhine's Defense (9) 
    B04 B05 B03 B02
 King's Gambit Declined (8) 
    C30 C31 C32
With the Black pieces:
 Ruy Lopez (35) 
    C67 C65 C63 C91 C77
 Queen's Gambit Accepted (33) 
    D20 D27 D26 D21 D22
 Queen's Gambit Declined (17) 
    D35 D39 D31 D36 D30
 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 Avrukh vs Jonkman, 2005 0-1
   Jonkman vs Blatny, 2002 1-0
   Jonkman vs Y Nahutin, 2004 1-0
   Hector vs Jonkman, 2003 1/2-1/2
   B De Jong-Muhren vs Jonkman, 2005 0-1
   R Hendriks vs Jonkman, 2001 0-1

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

GAME COLLECTIONS: [what is this?]
   2005 Corus (group C) by gauer
   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, 43 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. J Hania vs Jonkman 0-1401993LeeuwardenC25 Vienna
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 0-1271993It openC32 King's Gambit Declined, Falkbeer Counter Gambit
8. Jonkman vs Plachetka  0-1311993Cannes op2B22 Sicilian, Alapin
9. Jonkman vs F Kroeze  ½-½491993Leeuwarden opC36 King's Gambit Accepted, Abbazia Defense
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 Wojtkiewicz  ½-½731994It Wijk aan Zee (NED) (03)B22 Sicilian, Alapin
13. Jonkman vs L B Hansen  0-1361994Wijk aan Zee BC38 King's Gambit Accepted
14. Jonkman vs B Trabert  0-1401994It cC34 King's Gambit Accepted
15. Sutovsky vs Jonkman 1-0601994GroningenC47 Four Knights
16. C Marcelin vs Jonkman  0-1721994GroningenC50 Giuoco Piano
17. Jonkman vs R A Ziatdinov 0-1221994Ch Netherlands (open), VIII, AC34 King's Gambit Accepted
18. Jonkman vs W Zagema  ½-½771994It openC37 King's Gambit Accepted
19. Jonkman vs F Kroeze  0-1661994It openC37 King's Gambit Accepted
20. Jonkman vs F Kroeze  0-1691994Semi-finals Dutch championshipC30 King's Gambit Declined
21. R Janssen vs Jonkman  0-1231995It openC31 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. :)
Premium Chessgames Member
  redlance: Happy Birthday!!!
May-30-11  talisman: best bio on the jonk...happy birthday!!!!
Premium Chessgames Member
  juan31: A great player
Premium Chessgames Member
  TheFocus: Nicknamed "Sanford."
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