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Adrianus Dingeman de Groot
Number of games in database: 66
Years covered: 1934 to 1947

Overall record: +23 -20 =23 (52.3%)*
   * Overall winning percentage = (wins+draws/2) / total games in the database.

With the White pieces:
 Ruy Lopez (8) 
    C77 C96 C79 C87 C71
 Queen's Indian (7) 
    E16 E18 E17 E15 E19
 Orthodox Defense (5) 
    D51 D68 D52 D63 D60
 Sicilian (5) 
    B40 B58 B84 B39 B72
With the Black pieces:
 Grunfeld (9) 
    D80 D95 D96 D74 D85
 King's Indian (5) 
    E86 E62 E67 E81
 Alekhine's Defense (5) 
    B03 B05
Repertoire Explorer

NOTABLE GAMES: [what is this?]
   A D de Groot vs Cortlever, 1942 1-0
   E Gereben vs A D de Groot, 1936 1/2-1/2
   L Abramavicius vs A D de Groot, 1937 0-1
   A D de Groot vs R Arlauskas, 1936 1-0

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 66  PGN Download
Game  ResultMoves YearEvent/LocaleOpening
1. K M Bergsma vs A D de Groot  0-1431934ZandvoortB05 Alekhine's Defense, Modern
2. A D de Groot vs R Arlauskas  1-0351936non-FIDE Munich OlympiadD52 Queen's Gambit Declined
3. A D de Groot vs M Broeder  ½-½241936non-FIDE Munich OlympiadD39 Queen's Gambit Declined, Ragozin, Vienna Variation
4. A D de Groot vs Yury Toshev  0-1401936non-FIDE Munich OlympiadE16 Queen's Indian
5. E Gereben vs A D de Groot ½-½261936non-FIDE Munich OlympiadD39 Queen's Gambit Declined, Ragozin, Vienna Variation
6. A D de Groot vs A Rastrelli  1-0371936non-FIDE Munich Olympiad D06 Queen's Gambit Declined
7. A D de Groot vs E Richter  0-1281936non-FIDE Munich OlympiadD15 Queen's Gambit Declined Slav
8. A D de Groot vs J L Ormond  1-0411936non-FIDE Munich OlympiadE16 Queen's Indian
9. G Wheatcroft vs A D de Groot  0-14419377th olm finalB05 Alekhine's Defense, Modern
10. A D de Groot vs S Rosselli del Turco 1-04119377th olm finalD51 Queen's Gambit Declined
11. A D de Groot vs C Pirie  1-05119377th olm finalE17 Queen's Indian
12. S Petursson vs A D de Groot  0-14019377th olm finalE81 King's Indian, Samisch
13. L Abramavicius vs A D de Groot  0-16919377th olm finalE86 King's Indian, Samisch, Orthodox, 7.Nge2 c6
14. H C Christoffersen vs A D de Groot  ½-½4519377th olm finalB03 Alekhine's Defense
15. A D de Groot vs G Danielsson  0-14719377th olm finalE16 Queen's Indian
16. A D de Groot vs M Broeder  ½-½1919377th olm finalD68 Queen's Gambit Declined, Orthodox Defense, Classical
17. A D de Groot vs I Pleci  ½-½2119377th olm finalD63 Queen's Gambit Declined, Orthodox Defense
18. I A Horowitz vs A D de Groot  ½-½5119377th olm finalB03 Alekhine's Defense
19. M Defosse vs A D de Groot  0-14319377th olm finalD85 Grunfeld
20. A D de Groot vs K S Ojanen  ½-½3119377th olm finalE19 Queen's Indian, Old Main line, 9.Qxc3
21. T Regedzinski vs A D de Groot 1-01819377th olm finalE62 King's Indian, Fianchetto
22. A D de Groot vs F Zita  ½-½5219377th olm finalE18 Queen's Indian, Old Main line, 7.Nc3
23. A D de Groot vs J Petersen  0-13619377th olm finalD37 Queen's Gambit Declined
24. A D de Groot vs K Nieukerke  0-1471937Keus CupD60 Queen's Gambit Declined, Orthodox Defense
25. W F Wertheim vs A D de Groot  1-0331937Keus CupA06 Reti Opening
 page 1 of 3; games 1-25 of 66  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
Oct-21-08  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

Mar-11-13  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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