the Computer Chess Rating Lists maintained by a group of computer chess enthusiasts who enjoy engine versus engine testing, Ponder off. Active testers are Graham Banks, Charles Smith, Ray Banks (FRC only), Shaun Brewer, Adam Hair, Kirill Kryukov, Gabor Szots and Sergio Martinez .
- CCRL 40/40 - A most curious game by Kurt Utzinger, CCC, October 22, 2009
- CCRL LOS stats by Charles Roberson, CCC, October 18, 2011 » LOS, LOS Table
- a direct comparison of FIDE and CCRL rating systems by Erik Varend, CCC, February 22, 2016 » FIDE
- CCRL - CEGT matches by Norbert Raimund Leisner, CCC, July 28, 2016 » CCRL, CEGT, Opening Book
- ELO progression measured by year by Ed Schroder, CCC, December 13, 2017
- A question to CCRL by Günther Simon, CCC, January 10, 2020