81. Biggest amount of kings that cannot defeat only one king.

Jan Pieter Drost from The Netherlands composed this position. Black has beaten (6x48) with a man. Black's king on 48 always makes a draw against 9 white ones.

82. Quickest positional winning position.

J. Fainberg- Malamoed, USSR, 1961

1.32-28 18-22 2.37-32 12-18 3.41-37 7-12 4.46-41 1-7 5.34-30 20-24 6.32-27 15-20? 7.30-25! 10-15 8.38-32 4-10 9.43-38 24-29 etc. 2-0.

83. Longest symmetric game.

L. Fijn van Draat - M. Hoogakker, Dutch championship cadets, 1991.

1.32-27 19-24 2.38-32 13-19 3.43-38 8-13 4.48-43 3-8 5.31-26 20-25 6.36-31 15-20 7.41-36 10-15 8.47-41 4-10 9.33-28 18-23 10.27-22 24-29 11.31-27 20-24 12.36-31 15-20 13.39-33 12-18 14.35-30 24x35 15.33x 4 16-21 16.27x16 18x47 17.46-41 47x36 18.37-31 36x37 19.32x41 5-10 20.415 14-20 21.15x14 19x10 22.41-37 10-14 23.34-29 17-22 24.40-34 11-17 25.29-24 22-27 26.34-30 25x34 27.24-19 14x23 28.44-40 35x44 29.49x9 17-21 30.26x17 27-32 31.37x28 7-11 32.16x7 2x42 and 1-1.

84. World record playing draughts simultaneously with a clock.

Marino Barkel played on 17 May 2014 in Twenterand (Netherlands) against 43 opponents together. His score was almost 75%, more than the 70% which was necessary.

85. Most plys within 20x20 pieces

77, according to computer program Damage of Bert Tuyt.