Theodorus Cornelis Louis Kok

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Theodorus Cornelis Louis Kok around 1920

Theodorus Cornelis Louis Kok (born November 23, 1906 in The Hague ; † May 28, 1999 there ) was a well-known Dutch chess composer .

Chess player

Like all talented young chess players, Kok wanted to become world champion. As a passionate attacking player, he knew little about the endgame. His father gave him 5 guilders for Berger's standard work. But he was also inspired by the book in memory of Weenink .

Chess composition

Between 1933 and 1938 Kok composed numerous studies. In his monograph that was subsequently published, some of which made use of earlier articles, they were grouped thematically: Selbst patt , stair maneuvers, intersection combinations for Nowotny and Plachutta , etc. But orthodox tasks, retroanalysis and Selbstmatts are also represented.

After his book appeared, he published under the pseudonyms Dorus Jansen , Kees Jansen and Gerrit Jansen . His contributions to the theory of queen and rook endings are remarkable . The following example illustrates this.

Theodorus Cornelis Louis Kok
Deventer Dagblad, April 25, 1936
  a b c d e f G H  
8th Chess --t45.svg Chess --t45.svg Chess rlt45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg 8th
7th Chess --t45.svg Chess --t45.svg Chess plt45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg 7th
6th Chess --t45.svg Chess kdt45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg 6th
5 Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg 5
4th Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess rdt45.svg 4th
3 Chess --t45.svg Chess klt45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess plt45.svg 3
2 Chess --t45.svg Chess plt45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg 2
1 Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg 1
  a b c d e f G H  
White moves and wins

Template: checkerboard / maintenance / new

Solution:
1. Rd8! Txh3 + This intermediate check will equal both black pawns to win.
2. Rd3 Rxd3 + This rook sacrifice must be accepted and refutes the plan.
3. Kc2 Td6 No rook move can completely eliminate the pawn.
4. c8S +! Kc5 The sub-transformation into a knight forces a fork . After 4. c8 = D? Rc6 + 5. Qxc6 Kxc6 Black would have achieved the long-distance opposition and thus the draw .
5.Nxd6 Kxd6
6. Kb3 Kc5
7. Ka4 White wins.
After 3. ... Rd5 4. c8 = Q Rc5 + 5. Qxc5 Kxc5 6. Kc3! White owns the opposition and wins. Even after 3. ... Rd7 4. c8 = Q Rc7 + 5. Qxc7 Kxc7 6. Kc3 or Kb3 White retains the upper hand.

A manuscript by Kok was found in Selman's estate on the subject of The Black Lady in Zugzwang , which ARVES published posthumously 50 years later .

Private

Kok studied mathematics and physics in Leyden . After graduating during the Great Depression, he sorted and distributed eggs in his father's wholesale company. He then worked as a bookmaker and statistician. From 1942 until his retirement he was an actuary for an insurance company in Utrecht and hardly composed any studies.

literature

  • Theodorus Cornelis Louis Kok: Eindspelen en problemen , the Hague, self-published, 1939.

Individual evidence

  1. ↑ Jan van Reek; Henk van Donk: Endgame study composing in The Netherlands and Flanders. Margraten, 1992, pp. 41 ff ISBN 90-72939-12-3

Web link

personal data
SURNAME Kok, Theodorus Cornelis Louis
BRIEF DESCRIPTION Dutch chess composer
DATE OF BIRTH November 23, 1906
PLACE OF BIRTH the hague
DATE OF DEATH May 28, 1999
Place of death the hague