CCRL

For the oil refinery see CCRL Refinery Complex.

CCRL (Computer Chess Rating Lists) is an organisation that tests computer chess engines' strength by playing the programs against each other. CCRL was founded in 2006 by Graham Banks, Ray Banks, Sarah Bird, Kirill Kryukov and Charles Smith, and as of June 2012 its members are Graham Banks, Ray Banks (who only participates in Chess960, or Fischer Random Chess), Shaun Brewer, Adam Hair, Aser Huerga, Kirill Kryukov, Denis Mendoza, Charles Smith and Gabor Szots.[1]

The organisation runs three different lists: 40/40 (40 minutes for every 40 moves played), 40/4 (4 minutes for every 40 moves played), and 40/4 FRC (same time control but Chess960).[Note 1] Pondering (or permanent brain) is switched off and timing is adjusted to the AMD64 X2 4600+ (2.4 GHz) CPU by using Crafty 19.17 BH as a benchmark. Generic, neutral opening books are used (as opposed to the engine's own book) up to a limit of 12 moves into the game alongside 4 or 5 man tablebases.[1][2][3]

Notes

  1. ↑ The first number refers to the number of moves which must be made by each engine, the second number refers to the number of minutes allocated to make all of these moves. The repeating time control means that the time is reset after each multiple of this number of moves is reached. For example, in a 40/4 time control, each engine would have 4 minutes to make 40 moves, then a new 4 minutes would be allocated for the next 40 moves and so on, until the game was complete.

See also

References

  1. 1 2 CCRL, http://www.computerchess.org.uk/ccrl/, 19 June 2012
  2. ↑ CCRL Discussion Board, http://kirill-kryukov.com/chess/discussion-board/viewtopic.php?f=7&t=2808, 19 June 2012
  3. ↑ Adam's Computer Chess Pages, http://adamsccpages.blogspot.co.uk/2012/05/ccrl.html, 19 June 2012

Official CCRL website: http://www.computerchess.org.uk/ccrl/


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