CCRL 40/40
Downloads and Statistics
December 7, 2019
Testing summary:
Total: 1'104'002 games
played by 2'573 programs
150928 CPU days (X2 4600+)

White wins: 382'601 (34.7%)
Black wins: 284'129 (25.7%)
Draws: 437'272 (39.6%)
White score: 54.5%

Custom engine selection

Comparing 18 engines!
18 selected engines played 0 games with each other



CCRL 40/40 Rating List - Custom engine selection
1104002 games played by 2573 programs, run by 23 testers
Ponder off, General books (up to 12 moves), 3-4-5 piece EGTB
Time control: Equivalent to 40 moves in 40 minutes on Athlon 64 X2 4600+ (2.4 GHz), about 15 minutes on a modern CPU.
Computed on December 7, 2019 with Bayeselo based on 1'104'002 games
Tested by CCRL team, 2005-2019, http://ccrl.chessdom.com/ccrl/4040/

Rank               Engine                Elo   +    -   Score  AvOp  Games
NirvanaChess 2.4 64-bit 4CPU       3181  +13  -13  40.8%  +61.0  1734
  NirvanaChess 2.3 64-bit 4CPU       3152  +18  -18  41.4%  +55.6   869
  NirvanaChess 2.2 64-bit 4CPU       3139  +17  -18  40.7%  +59.6   961
  NirvanaChess 2.4 64-bit            3102   +9   -9  44.4%  +37.9  3966
  NirvanaChess 2.1c 64-bit 4CPU      3095  +22  -23  45.2%  +31.4   608
  NirvanaChess 2.3 64-bit            3073  +13  -13  44.6%  +36.4  1994
  NirvanaChess 2.2 64-bit            3064  +14  -14  45.9%  +26.4  1620
  NirvanaChess 2.0a 64-bit 4CPU      3056  +30  -30  44.7%  +35.7   337
  NirvanaChess 2.1c 64-bit           3022  +23  -23  49.7%   +2.2   564
  NirvanaChess 2.0a 64-bit           2985  +23  -23  53.9%  -25.3   571
  NirvanaChess 1.8 64-bit            2828  +25  -25  49.3%   +2.9   500
  NirvanaChess 1.5 64-bit            2822  +29  -29  47.3%  +17.6   372
  NirvanaChess 1.6 64-bit            2821  +27  -27  49.1%   +7.2   409
  NirvanaChess 1.7 64-bit            2811  +31  -31  48.6%  +12.5   327
  NirvanaChess 1.4 64-bit            2762  +30  -30  47.1%  +18.0   360
  NirvanaChess 1.3 64-bit            2748  +31  -31  49.0%   +7.5   342
  NirvanaChess 1.2 64-bit            2701  +30  -30  48.2%  +11.8   333
  NirvanaChess 1.1 64-bit            2549  +26  -26  51.1%  -14.4   532

Created in 2005-2013 by CCRL team
Last games added on December 7, 2019