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Harmen Jonkman
H Jonkman 
Photo courtesy  
Number of games in database: 1,320
Years covered: 1990 to 2019
Last FIDE rating: 2385 (2368 blitz)
Highest rating achieved in database: 2520

Overall record: +146 -154 =111 (49.0%)*
   * Overall winning percentage = (wins+draws/2) / total games in the database. 909 exhibition games, blitz/rapid, odds games, etc. are excluded from this statistic.

With the White pieces:
 Sicilian (234) 
    B22 B50 B52 B31 B30
 French Defense (136) 
    C02 C07 C03 C05 C01
 Caro-Kann (49) 
    B18 B19 B17 B12 B16
 King's Gambit Accepted (42) 
    C33 C34 C36 C38 C37
 Pirc (33) 
    B09 B07 B08
 Alekhine's Defense (25) 
    B04 B02 B05 B03
With the Black pieces:
 Queen's Gambit Accepted (141) 
    D20 D27 D26 D22 D21
 Ruy Lopez (117) 
    C67 C63 C65 C75 C90
 Queen's Pawn Game (39) 
    D02 D00 D01 D04 D05
 Queen's Gambit Declined (39) 
    D35 D39 D31 D36 D30
 Scotch Game (39) 
 English (34) 
    A13 A14 A11 A15 A10
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
   Avrukh vs Jonkman, 2005 0-1
   Jonkman vs Naiditsch, 2003 1-0
   R Hendriks vs Jonkman, 2001 0-1
   Jonkman vs Blatny, 2002 1-0
   T Willemze vs Jonkman, 2007 0-1
   S Brynell vs Jonkman, 2007 0-1

NOTABLE TOURNAMENTS: [what is this?]
   2nd White Rose (2000)
   Amsterdam Lost Boys Open (1998)
   Target Recruitment Masters (2001)
   Corus Group B (2002)
   Corus Group C (2005)
   World Open: Open Section (2003)
   Corus Group C (2007)
   Corus Group B (2003)
   E.U. Championship and Cork Chess Congress (2005)
   Gibraltar Masters (2003)
   Groningen Open (1994)
   Reykjavik Open (2000)
   Leeuwarden Open (1993)
   Lisbon Open (2001)
   European Championship (2004)

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

   🏆 16th ROC Nova College
   M Admiraal vs H Jonkman (Jun-30-19) 1/2-1/2
   H Jonkman vs J Cebula (Jun-29-19) 1-0
   H Jonkman vs Sadler (Jun-29-19) 0-1
   H Jonkman vs M A Gomes (Aug-15-18) 1-0
   Ilimbek Esenbek Uulu vs H Jonkman (Aug-14-18) 0-1

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

(born May-30-1975, 47 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 53; games 1-25 of 1,306  PGN Download
Game  ResultMoves YearEvent/LocaleOpening
1. H Jonkman vs H Perez Garcia  0-1481990Haarlem Noord-Hol.ChB22 Sicilian, Alapin
2. M Jonker vs H Jonkman  1-0401990NED-ch op U20A07 King's Indian Attack
3. Andre Buter vs H Jonkman  1-0331990ACCOM opC61 Ruy Lopez, Bird's Defense
4. H Jonkman vs H Vedder  0-1531990NED-ch op U20C02 French, Advance
5. H Jonkman vs J Keijsper  0-1351990ACCOM opC36 King's Gambit Accepted, Abbazia Defense
6. S Strating vs H Jonkman  1-0331990ACCOM opD20 Queen's Gambit Accepted
7. J Schermer vs H Jonkman  ½-½341990ACCOM opA13 English
8. Anton Schermer vs H Jonkman  0-1221990ACCOM opA06 Reti Opening
9. H Jonkman vs A Strik  1-0361990ACCOM opC32 King's Gambit Declined, Falkbeer Counter Gambit
10. H Jonkman vs T Zweers  1-0401990ACCOM opB22 Sicilian, Alapin
11. E J Dondergoor vs H Jonkman  0-1231992Hengelo op-AD20 Queen's Gambit Accepted
12. H Jonkman vs C Boogaard  1-0241992NED-ch U18B09 Pirc, Austrian Attack
13. S Ziger vs H Jonkman  0-1441992Werfen op-AD03 Torre Attack (Tartakower Variation)
14. H Jonkman vs Onischuk  0-1411992Hamburg opC32 King's Gambit Declined, Falkbeer Counter Gambit
15. H Jonkman vs Thomas Brejding  0-1381992Hengelo op-AC02 French, Advance
16. G Nindl vs H Jonkman  ½-½551992Werfen op-AD28 Queen's Gambit Accepted, Classical
17. G Plomp vs H Jonkman  ½-½651992NED-ch U18A13 English
18. H Jonkman vs M Reiter  0-1611992Werfen op-AB22 Sicilian, Alapin
19. H Jonkman vs F Slingerland  ½-½161992NED-ch U18C36 King's Gambit Accepted, Abbazia Defense
20. H Jonkman vs P Straub  ½-½81992Werfen op-AC34 King's Gambit Accepted
21. K Pinkas vs H Jonkman  ½-½921992Werfen op-AC28 Vienna Game
22. H Jonkman vs T Hommeles  0-1671992NED-ch opC38 King's Gambit Accepted
23. H Jonkman vs K Mahdy  ½-½441992Werfen op-AB06 Robatsch
24. H Jonkman vs M de Jong  1-0481992NED-ch U18C02 French, Advance
25. D Reinderman vs H Jonkman  1-0331992NED-ch U18A07 King's Indian Attack
 page 1 of 53; games 1-25 of 1,306  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!
May-30-09  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.

Premium Chessgames Member
  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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