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Adrianus Dingeman de Groot
Number of games in database: 58
Years covered: 1936 to 1947
Overall record: +21 -16 =21 (54.3%)*
   * Overall winning percentage = (wins+draws/2) / total games
      Based on games in the database; may be incomplete.

With the White pieces:
 Queen's Indian (7) 
    E16 E18 E15 E17 E19
 Ruy Lopez (6) 
    C79 C82 C71 C65 C90
 Sicilian (5) 
    B58 B40 B84 B39 B72
 Orthodox Defense (4) 
    D63 D68 D52 D51
With the Black pieces:
 Grunfeld (9) 
    D96 D95 D80 D74 D92
 King's Indian (5) 
    E86 E62 E81 E67
Repertoire Explorer

NOTABLE GAMES: [what is this?]
   E Gereben vs A D de Groot, 1936 1/2-1/2

NOTABLE TOURNAMENTS: [what is this?]
   Hoogovens (1946)

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(born Oct-26-1914, died Aug-14-2006, 91 years old) Netherlands

[what is this?]
Adriaan de Groot was a Professor of Psychology and a strong amateur player. He represented the Netherlands in the Olympiads at Munich 1936, Stockholm 1937 and Buenos Aires 1939. His book Thought and Choice in Chess (Amsterdam Academic Archive, 1965, translation of his 1946 dissertation Het denken van de schaker) is an important contribution to understanding how a chess master thinks. He took a bit of interest in seeing how Bs6676 (Computer) played.

Wikipedia article: Adriaan de Groot

 page 1 of 3; games 1-25 of 58  PGN Download
Game  ResultMoves Year Event/LocaleOpening
1. A D de Groot vs A Rastrelli  1-037 1936 Munich OlympiadD06 Queen's Gambit Declined
2. E Gereben vs A D de Groot ½-½26 1936 Munich ol (Men)D39 Queen's Gambit Declined, Ragozin, Vienna Variation
3. A D de Groot vs Yury Toshev  0-140 1936 Munich OlympiadE16 Queen's Indian
4. A D de Groot vs M Broeder  ½-½24 1936 Munich ol (Men)D39 Queen's Gambit Declined, Ragozin, Vienna Variation
5. A D de Groot vs R Arlauskas  1-035 1936 Munich OlympiadD52 Queen's Gambit Declined
6. A D de Groot vs J L Ormond  1-041 1936 Munich OlympiadE16 Queen's Indian
7. A D de Groot vs E Richter  0-128 1936 Munich OlympiadD15 Queen's Gambit Declined Slav
8. L Abramavicius vs A D de Groot  0-169 1937 7th olm finalE86 King's Indian, Samisch, Orthodox, 7.Nge2 c6
9. T Regedzinski vs A D de Groot  1-018 1937 7th olm finalE62 King's Indian, Fianchetto
10. A D de Groot vs I Pleci  ½-½21 1937 7th olm finalD63 Queen's Gambit Declined, Orthodox Defense
11. A D de Groot vs C Pirie  1-051 1937 7th olm finalE17 Queen's Indian
12. A D de Groot vs F Zita  ½-½52 1937 7th olm finalE18 Queen's Indian, Old Main line, 7.Nc3
13. A D de Groot vs M Broeder  ½-½19 1937 7th olm finalD68 Queen's Gambit Declined, Orthodox Defense, Classical
14. S Petursson vs A D de Groot  0-140 1937 7th olm finalE81 King's Indian, Samisch
15. M Defosse vs A D de Groot  0-143 1937 7th olm finalD85 Grunfeld
16. H C Christoffersen vs A D de Groot  ½-½45 1937 7th olm finalB03 Alekhine's Defense
17. A D de Groot vs S Rosselli del Turco 1-041 1937 7th olm finalD51 Queen's Gambit Declined
18. A D de Groot vs K S Ojanen  ½-½31 1937 7th olm finalE19 Queen's Indian, Old Main line, 9.Qxc3
19. A D de Groot vs G Danielsson  0-147 1937 7th olm finalE16 Queen's Indian
20. A D de Groot vs J Petersen  0-136 1937 7th olm finalD37 Queen's Gambit Declined
21. G Wheatcroft vs A D de Groot  0-144 1937 7th olm finalB05 Alekhine's Defense, Modern
22. I A Horowitz vs A D de Groot  ½-½51 1937 7th olm finalB03 Alekhine's Defense
23. A D de Groot vs J van den Bosch  ½-½69 1938 NED-ch10B39 Sicilian, Accelerated Fianchetto, Breyer Variation
24. A D de Groot vs G A Thomas  ½-½18 1938 ENG-NEDE15 Queen's Indian
25. G A Thomas vs A D de Groot  ½-½18 1938 ENG-NEDB29 Sicilian, Nimzovich-Rubinstein
 page 1 of 3; games 1-25 of 58  PGN Download
  REFINE SEARCH:   White wins (1-0) | Black wins (0-1) | Draws (1/2-1/2) | de Groot wins | de Groot loses  

Kibitzer's Corner
Premium Chessgames Member Does anybody know if this player is the same as Adri de Groot? The names match, but the 50 year hiatus makes us think that perhaps it's a relative, or a coincidence.
Dec-07-04  sneaky pete: <> It's a coincidence, two different people, probably unrelated. Professor A.D. de Groot, born around 1910, is the author of "Het denken van de schaker" (translated as "Thought and choice in chess" if I'm not mistaken) who did research for this work (a dissertation) during the 1938 Avro tournament. His career as a competetive player (strong amateur) was very short. Adri de Groot is a contemporary correspondence player, born around 1950 or later.
Apr-05-06  DanRoss53: <sneaky pete> That is correct... for more on Dr. de Groot, check this out:
Oct-21-08  squlpt: Lol..What a cool name
Premium Chessgames Member
  sleepyirv: <squlpt> The Neatherlands have a lot of interesting names.
Jul-24-09  myschkin: . . .

In memoriam: "Adriaan de Groot, chess psychologist"

(by Frederic Friedel)


another spindocter: Prof. Fernand Gobet (cognitive psychology)


"Schachspieler denken nicht" (in German pdf )

Oct-21-11  BIDMONFA: Adrianus Dingeman De Groot

DE GROOT, Adrianus

Premium Chessgames Member
  Eduardo Bermudez: His book 'Thought and Choice in Chess' is an important contribution to understanding how a chess master thinks !!
Oct-26-14  sneaky pete: His dissertation "Thought and Choice in Chess": (from
Premium Chessgames Member
  cro777: On the occasion of <de Groot's 100th birthday (October 26th)> the Dutch institute Cito (the Central Institute for the development of tests and exams) paid a fitting tribute, with a simultaneous display by Jan Timman and a lecture on De Groot by Willy Hendriks.

De Groot's dissertation "Het denken van de schaker" translated as "Thought and Choice in Chess" is considered the most influential book about (cognitive) psychology in chess and had a great impact on cognitive psychology in general. One of the main themes in "Thought and Choice in Chess" is the difference between the expert (grandmaster) and the amateur.

In his book "Move First, Think Later" Willy Hendriks has dedicated a chapter to the role of De Groot in chess psychology:

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