CCRL 40/40
Downloads and Statistics
October 12, 2019
Testing summary:
Total: 1'090'583 games
played by 2'551 programs
149018 CPU days (X2 4600+)

White wins: 378'348 (34.7%)
Black wins: 281'291 (25.8%)
Draws: 430'944 (39.5%)
White score: 54.4%

Engine Details

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Zevra 2.1.2 r248 64-bit in CCRL 40/40, 2019-10-12
Ponder off, General book (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 Intel CPU.
Tested by CCRL team, 2005-2019, http://ccrl.chessdom.com/ccrl/4040/

CCRL 40/40 main list:
Zevra 2.1.2 r248 64-bit is #239-240 with rating of 2396 Elo points (+30 -30),
based on 400 games: 149 wins, 146 losses and 105 draws
Score: 50.4%, Average opponent: −1.2, Draws: 26.3%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Delocto 0.6 64-bit                 2576   2.5-7.5   (+1 -6 =3 )    0.0    +5
 - Ghost 3.1 64-bit                   2550   4.5-5.5   (+3 -4 =3 )    0.0  +121
 - WyldChess 1.1 64-bit               2501   4.0-6.0   (+1 -3 =6 )    0.0   +50
 - Arasan 10.3                        2496   5.0-5.0   (+4 -4 =2 )    0.0  +100
 - Bagatur 1.5g 64-bit                2493   1.0-9.0   (+0 -8 =2 )    0.0  -228
 - Zurichess Geneva 64-bit            2483   3.0-7.0   (+2 -6 =2 )    0.0   -62
 - Shield 1.2 64-bit                  2473   3.5-6.5   (+2 -5 =3 )    0.0   -23
 - Donna 3.0 64-bit                   2461   4.0-6.0   (+3 -5 =2 )    0.2    -9
 - Giraffe 20150908 64-bit            2460   6.0-4.0   (+5 -3 =2 )    0.0  +131
 - Bumblebee 1.0 64-bit               2459   4.0-6.0   (+3 -5 =2 )    0.1   -11
 - Axolotl 1.8 64-bit                 2446   4.5-5.5   (+3 -4 =3 )    0.3   +22
 - Mephisto Gideon Professional       2446   4.5-5.5   (+3 -4 =3 )    0.7   +18
 - Nemeton 1.6                        2439   4.0-6.0   (+4 -6 =0 )    1.4   -43
 - Bearded N44.5 64-bit               2438   3.5-6.5   (+2 -5 =3 )    1.2   -62
 - Snitch 1.6.2 64-bit                2436   5.0-5.0   (+4 -4 =2 )    1.8   +45
 - Bitfoot 1.0.d9aeb43 64-bit         2415   3.0-7.0   (+1 -5 =4 )   17.9  -107
 - Gaia 3.5 64-bit                    2412   5.5-4.5   (+5 -4 =1 )   20.7   +57
 - KnightDreamer 3.3                  2405   6.0-4.0   (+4 -2 =4 )   34.1   +68
 - Patzer 3.80                        2402   5.5-4.5   (+5 -4 =1 )   38.5   +42
 - Amateur 2.82                       2391   3.0-7.0   (+3 -7 =0 )   62.1  -190
 - FrankWalter 2.2.3 64-bit           2391   5.0-5.0   (+4 -4 =2 )   60.2    -5
 - Jazz 721 64-bit                    2385   7.0-3.0   (+6 -2 =2 )   73.8  +138
 - Tytan 9.32 64-bit                  2368   7.5-2.5   (+6 -1 =3 )   93.2  +148
 - Topple 0.1.1 64-bit                2365   5.0-5.0   (+4 -4 =2 )   94.9   -31
 - Plisk 0.2.7d 64-bit                2361   5.5-4.5   (+4 -3 =3 )   97.7    -3
 - Isa 2.0.64 64-bit                  2360   4.5-5.5   (+4 -5 =1 )   98.3   -78
 - pikoSzachy Extreme 2               2355   6.5-3.5   (+6 -3 =1 )   96.6   +75
 - K2 0.67                            2354   3.5-6.5   (+2 -5 =3 )   98.7  -141
 - KnightX 1.94 64-bit                2350   6.5-3.5   (+5 -2 =3 )   99.3   +54
 - Gibbon 2.60a 64-bit                2338   6.5-3.5   (+5 -2 =3 )   99.9   +41
 - Butcher 1.61 64-bit                2334   6.5-3.5   (+5 -2 =3 )   99.8   +46
 - EveAnn 1.71                        2332   3.0-7.0   (+1 -5 =4 )   99.9  -192
 - Googleplex Starthinker 1.4 64-bit  2320   6.0-4.0   (+3 -1 =6 )  100.0   -20
 - Zeus 1.27                          2320   4.5-5.5   (+2 -3 =5 )  100.0  -103
 - RubiChess 0.7 64-bit               2303   6.0-4.0   (+5 -3 =2 )  100.0   -19
 - Ant 2006-F                         2303   6.5-3.5   (+5 -2 =3 )  100.0   +13
 - Matilde 2008 64-bit                2290   6.0-4.0   (+4 -2 =4 )  100.0   -42
 - Chaturanga 2.4.3                   2289   8.0-2.0   (+7 -1 =2 )  100.0  +119
 - Ayito 0.2.994                      2265   6.5-3.5   (+5 -2 =3 )  100.0   -30
 - RamJet 0.13                        2228   9.0-1.0   (+8 -0 =2 )  100.0  +156


Created in 2005-2013 by CCRL team
Last games added on October 12, 2019