CCRL Blitz
Downloads and Statistics
May 1, 2021
Testing summary:
Total: 2'515'858 games
played by 2'996 programs

White wins: 966'865 (38.4%)
Black wins: 774'272 (30.8%)
Draws: 774'721 (30.8%)
White score: 53.8%

Custom engine selection

Comparing 22 engines!
22 selected engines played 586 games with each other



CCRL Blitz Rating List - Custom engine selection
2515858 games played by 2996 programs, run by 22 testers
Ponder off, General books (up to 12 moves), 3-4-5 piece EGTB
Time control: From Jan 2020, equivalent to 2'+1" on an Intel i7-4770K. See the "About" page.
Computed on May 1, 2021 with Bayeselo based on 2'515'858 games
Tested by CCRL team, 2005-2021, http://ccrl.chessdom.com/ccrl/404/

Rank                 Engine                   Elo   +    -   Score  AvOp  Games
Scorpio 2.8 64-bit 4CPU                 2995  +17  -18  42.4%  +50.2  1101
  Scorpio 2.7.9 64-bit 4CPU               2982  +25  -25  45.8%  +26.9   520
  Scorpio 2.8 64-bit                      2904  +15  -15  43.1%  +47.4  1609
  Scorpio 2.7.9 64-bit                    2886  +21  -21  54.1%  -28.6   741
  Scorpio 2.7.8 64-bit                    2848  +26  -26  52.9%  -21.1   506
  Scorpio 2.7.6 64-bit                    2816  +15  -15  51.2%   -6.8  1607
  Scorpio 2.8.5 MCTS 64-bit               2814  +23  -22  59.7%  -70.9   720
  Scorpio 2.7.5 64-bit                    2804  +23  -22  62.2%  -90.5   735
  Scorpio 2.7 64-bit                      2775  +14  -14  51.2%   -3.9  1878
  Scorpio 2.6 64-bit                      2756  +14  -14  45.3%  +35.5  1917
  Scorpio 2.0 32-bit 4CPU                 2731  +20  -20  29.1% +154.0  1005
  Scorpio 2.1 64-bit 4CPU                 2723  +17  -17  27.5% +173.6  1495
  Scorpio 2.5 64-bit                      2683  +14  -14  51.5%   -7.8  1972
  Scorpio 2.0 32-bit                      2656  +12  -12  50.5%   -2.7  2542
  Scorpio 2.0 64-bit                      2653  +27  -27  49.6%   +2.9   383
  Scorpio 1.81                            2648  +14  -14  45.7%  +22.1  2021
  Scorpio 1.9                             2641  +13  -13  37.3%  +92.4  2357
  Scorpio 1.91                            2641  +12  -12  43.2%  +48.1  2381
  Scorpio 1.82                            2638  +20  -20  52.2%  -28.3  1024
  Scorpio 1.84                            2633  +20  -20  27.0% +169.3  1026
  Scorpio 1.8                             2624  +14  -15  40.6%  +69.5  1803
  Scorpio 2.1 64-bit                      2487  +32  -34  10.7% +361.5   650

Created in 2005-2013 by CCRL team
Last games added on May 1, 2021