CCRL 40/15
Downloads and Statistics
May 1, 2021
Testing summary:
Total: 1'240'737 games
played by 2'832 programs

White wins: 425'216 (34.3%)
Black wins: 312'397 (25.2%)
Draws: 503'124 (40.6%)
White score: 54.5%

Engine Details

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Stockfish 2021-01-11 64-bit (3516+18
−18
)Quote
Authors: Marco Costalba, Joona Kiiski, Stockfish team members Links: List of Authors, Homepage, Development Versions, Testing Framework
Stockfish was originally based on Glaurung by Tord Romstad.
This is one of the 123 Stockfish versions we tested: Compare them!
OpponentEloDiffResultsScoreLOSPerf
–   Fat Fritz 2 (in SF) 64-bit3509+16
−16
(−7)27 − 25
(+4−2=46)
51.9%
27.0 / 52
73.4%
+2
–   Dragon by Komodo 64-bit3473+14
−14
(−43)27.5 − 22.5
(+6−1=43)
55.0%
27.5 / 50
100.0%
−18
–   Houdini 6 64-bit 4CPU3398+10
−10
(−118)21 − 9
(+13−1=16)
70.0%
21.0 / 30
100.0%
+1
–   SlowChess Blitz 2.5 64-bit 4CPU3396+18
−18
(−120)20.5 − 9.5
(+12−1=17)
68.3%
20.5 / 30
100.0%
−13
–   Ethereal 12.75 64-bit 4CPU3392+15
−15
(−124)20 − 10
(+10−0=20)
66.7%
20.0 / 30
100.0%
−33
–   Nemorino 6.00 64-bit 4CPU3384+17
−17
(−132)19.5 − 10.5
(+9−0=21)
65.0%
19.5 / 30
100.0%
−51
–   Nemorino 6.00 64-bit3343+12
−12
(−173)37.5 − 12.5
(+25−0=25)
75.0%
37.5 / 50
100.0%
−18
–   Houdini 6 64-bit3335+8
−8
(−181)42.5 − 7.5
(+35−0=15)
85.0%
42.5 / 50
100.0%
+72
–   RubiChess 2.1 64-bit3330+33
−34
(−186)14 − 6
(+8−0=12)
70.0%
14.0 / 20
100.0%
−71
–   Fire 8 64-bit3329+17
−17
(−187)39 − 13
(+26−0=26)
75.0%
39.0 / 52
100.0%
−35
–   SlowChess Blitz 2.5 64-bit3329+16
−16
(−187)41 − 9
(+32−0=18)
82.0%
41.0 / 50
100.0%
+29
–   Igel 3.0.0 64-bit3321+22
−22
(−195)31.5 − 10.5
(+21−0=21)
75.0%
31.5 / 42
100.0%
−41
–   Ethereal 12.75 64-bit3320+12
−12
(−196)37 − 11
(+26−0=22)
77.1%
37.0 / 48
100.0%
−25
–   SlowChess Blitz 2.4 64-bit3303+16
−16
(−213)42.5 − 7.5
(+35−0=15)
85.0%
42.5 / 50
100.0%
+41
–   Nemorino 6.05 64-bit3289+18
−18
(−227)39.5 − 12.5
(+28−1=23)
76.0%
39.5 / 52
100.0%
−61
–   RubiChess 2.0 64-bit3278+16
−16
(−238)41.5 − 10.5
(+31−0=21)
79.8%
41.5 / 52
100.0%
−41
–   Igel 2.9.0 64-bit3272+15
−15
(−244)43 − 7
(+36−0=14)
86.0%
43.0 / 50
100.0%
+19
–   Ethereal 11.75 64-bit3260+15
−15
(−256)47 − 5
(+42−0=10)
90.4%
47.0 / 52
100.0%
+79
–   Fire 7.1 64-bit3258+8
−8
(−258)45.5 − 6.5
(+39−0=13)
87.5%
45.5 / 52
100.0%
+31
–   Booot 6.5 64-bit3258+18
−18
(−258)42.5 − 7.5
(+35−0=15)
85.0%
42.5 / 50
100.0%
−4
–   Xiphos 0.6 64-bit3253+9
−9
(−263)45 − 5
(+40−0=10)
90.0%
45.0 / 50
100.0%
+65
–   RofChade 2.3 64-bit3240+11
−11
(−276)48 − 4
(+44−0=8)
92.3%
48.0 / 52
100.0%
+100
–   Booot 6.4 64-bit3238+11
−11
(−278)46.5 − 5.5
(+41−0=11)
89.4%
46.5 / 52
100.0%
+40
–   Laser 1.7 64-bit3206+9
−9
(−310)47.5 − 4.5
(+43−0=9)
91.3%
47.5 / 52
100.0%
+45
–   Schooner 2.2 64-bit3202+10
−10
(−314)46 − 6
(+40−0=12)
88.5%
46.0 / 52
100.0%
−10

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