CCRL Blitz
Downloads and Statistics
February 27, 2021
Testing summary:
Total: 2'472'902 games
played by 2'944 programs

White wins: 950'998 (38.5%)
Black wins: 761'961 (30.8%)
Draws: 759'943 (30.7%)
White score: 53.8%

Engine Details

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Stockfish 1.7.1 64-bit 4CPU (3141+13
−13		)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 71 Stockfish versions we tested: Compare them!
OpponentEloDiffResultsScoreLOSPerf
–   Rybka 4 64-bit 4CPU3198+11
−11		(+57)42.5 − 58.5
(+20−36=45)
42.1%
42.5 / 101
0.0%
+7
0 = = 1 0 = 1 1 0 = 0 = = = = = 0 1 1 = 0 = 0 1 = = 1 0 = = 1 = 0 = = 1 0 0 = 1 0 = 0 = 1 0 0 0 = 0 0 0 0 = = = 0 0 0 0 = = 0 = 0 1 0 1 = = = = 0 0 0 1 1 = 1 0 1 = 1 = = = = = = 0 1 = 0 = = 0 0 0 = = 1
–   Rybka 3 64-bit 4CPU3167+9
−10		(+26)29 − 38
(+13−22=32)
43.3%
29.0 / 67
0.1%
−14
1 0 = 0 0 1 = 0 1 = 0 = 1 = 1 0 = 0 = 0 = 0 0 = = 0 = = = = = = 1 = 1 0 = 1 0 0 1 0 = 0 = = 1 0 = = = 0 0 = 1 = = 0 0 = = = 1 0 1 = =
–   Stockfish 1.9.1 64-bit 4CPU3153+13
−12		(+12)50 − 50
(+18−18=64)
50.0%
50.0 / 100
7.9%
+12
1 = = 0 0 = 0 = = 1 = 0 1 = 1 0 0 = = 0 1 1 = = = 0 = = = 0 1 0 = = = = = = = 0 = 0 1 = = = 1 = 1 = = = = = = 1 = = 1 0 = = = 0 = = = = 1 = 0 = 1 0 = 1 = = = = = 1 0 0 = = 1 = = = 1 = = = = = = = = =
–   Stockfish 1.8 64-bit 4CPU3138+16
−16		(−3)22 − 28
(+8−14=28)
44.0%
22.0 / 50
62.9%
−39
= = = 0 = = 1 0 = = 1 0 = 1 0 0 = 0 = 0 0 = = 0 = = 1 = = = 0 1 = = = 0 = 0 1 0 = = = 0 = = = = 1 1
–   Rybka 4 64-bit3102+13
−13		(−39)29.5 − 20.5
(+16−7=27)
59.0%
29.5 / 50
100.0%
+13
= 1 1 1 0 = = = = 1 = 1 = 1 0 1 1 1 = = = = 1 1 0 1 1 = = = 0 = = = 1 0 = 1 = 1 = = = = = = 0 = 0 =
–   Naum 4.2 64-bit 4CPU3099+8
−8		(−42)35 − 30
(+20−15=30)
53.8%
35.0 / 65
100.0%
−19
1 1 1 0 = 1 0 = 0 0 = = 1 = 1 1 = 1 1 0 = = = = = = = = = = = = 0 1 1 1 = 1 0 0 = = 1 = 0 = 0 = = 1 = 1 0 1 0 1 = = 0 = 1 0 1 0 =
–   Stockfish 1.6s JA 64-bit 4CPU3094+13
−13		(−47)37 − 29
(+17−9=40)
56.1%
37.0 / 66
100.0%
−15
1 1 0 = = = 1 = = = = = = = 1 = 0 0 0 1 1 = 0 = = = 1 = = = = = = = 1 1 = = 0 1 1 = = 1 = = 0 = = = = 1 = 0 0 = = = = 1 1 = 1 = = 1
–   Stockfish 1.6.3 64-bit 4CPU3090+13
−13		(−51)38.5 − 27.5
(+16−5=45)
58.3%
38.5 / 66
100.0%
−6
= = = 1 1 1 = = 1 = = = 0 = = 1 = = = = 1 = = = 1 = = 1 1 = = 0 = = = = 1 = 1 = = 1 1 1 = = 0 = = = = = = = 1 = = = = = 0 = = 0 = 1
–   Naum 4.1 64-bit 4CPU3070+15
−15		(−71)39 − 26
(+27−14=24)
60.0%
39.0 / 65
100.0%
−7
0 0 1 = 1 1 1 1 = 1 = 1 1 = 1 0 0 1 0 = 0 = = = 1 1 1 1 0 = 1 = = 0 = 1 = 1 1 0 1 1 = = = 0 1 = = = 1 = 1 = 0 1 0 = 0 0 1 = 1 1 =
–   Naum 4 64-bit 4CPU3062+10
−10		(−79)36 − 29
(+22−15=28)
55.4%
36.0 / 65
100.0%
−46
1 1 = 1 1 = = 0 1 = = = 1 = = 1 = = 1 0 1 = = 1 = 1 = = = 0 1 1 0 0 0 = = 0 = 0 0 0 1 = = 1 1 0 1 0 0 1 = = = = = 0 1 1 1 1 0 = =
–   Deep Shredder 12 64-bit 4CPU3042+7
−7		(−99)41.5 − 23.5
(+30−12=23)
63.8%
41.5 / 65
100.0%
−8
1 1 1 0 = = 1 1 1 0 = 0 0 = = 1 = = 1 1 1 1 0 1 = = 1 1 = 1 1 0 1 0 1 = 1 = 1 = 1 0 1 = = = = = 1 0 = 0 = 0 1 1 = 1 = = 1 0 1 1 1
–   Critter 0.70 64-bit 4CPU3037+24
−24		(−104)24 − 11
(+16−3=16)
68.6%
24.0 / 35
100.0%
+9
= = 1 = 1 = = = 1 1 1 = = 1 0 = 1 0 1 1 1 1 = = = 1 1 1 = = = 0 = 1 1
–   Deep Fritz 12 4CPU3031+24
−24		(−110)32.5 − 16.5
(+25−9=15)
66.3%
32.5 / 49
100.0%
+1
1 1 = 1 1 1 1 = 1 1 0 1 = = = 1 = 0 0 = 1 1 = = 1 = 1 1 0 0 1 0 1 1 = 1 1 0 1 1 = = 1 0 = 1 1 0 =
–   Hiarcs 13.1 4CPU3010+12
−12		(−131)39 − 11
(+32−4=14)
78.0%
39.0 / 50
100.0%
+70
= 0 0 1 1 1 1 0 = = = 1 = 1 1 1 1 = 1 1 = 1 = 1 1 1 1 1 1 = 1 0 1 1 1 = 1 1 1 = 1 1 1 1 = 1 = = 1 1
–   Spark 0.5 64-bit 4CPU3000+15
−15		(−141)71 − 29
(+50−8=42)
71.0%
71.0 / 100
100.0%
−6
0 1 1 1 = 1 = = 1 1 1 1 = = = 1 = 1 1 = 0 = 1 0 1 1 = 1 = 0 1 = = 1 1 1 = 1 = 0 = 1 1 1 = 1 0 1 1 1 1 1 = 1 = 1 1 1 1 = 1 = = 1 = 1 = = = 1 = 1 1 0 = = = = 1 1 1 = 1 1 = 1 0 = = 1 = = = = 1 = 1 = = 1
–   Spark 0.4 64-bit 4CPU2989+14
−14		(−152)48 − 16
(+36−4=24)
75.0%
48.0 / 64
100.0%
+13
1 1 1 = 1 1 1 1 1 = 1 1 = 1 1 = 1 1 = = 1 = = = 1 1 = = 1 = 1 0 1 0 = = = 1 1 = = 1 1 = = = 1 = 1 0 1 0 1 = 1 1 1 1 1 1 1 = 1 =
–   Zappa Mexico II 64-bit 4CPU2973+7
−7		(−168)50.5 − 14.5
(+42−6=17)
77.7%
50.5 / 65
100.0%
+32
1 = 1 1 0 1 = = = = = 1 1 = = 1 1 1 = = 1 1 1 1 1 1 = = 1 = 1 1 0 1 1 1 1 1 = 1 1 0 = 1 0 1 = = 1 1 1 1 1 1 0 1 1 1 1 1 0 1 1 1 1
–   Spark 0.3 64-bit 4CPU2970+12
−12		(−171)50.5 − 14.5
(+38−2=25)
77.7%
50.5 / 65
100.0%
+11
1 1 1 = 1 = = 1 = 1 1 1 1 1 = 1 1 = = 1 1 1 1 1 1 1 = 1 1 = 0 1 1 1 = = = = 1 = 1 1 1 = 0 = = 1 = 1 1 = = 1 = 1 = 1 1 = 1 1 = 1 =
–   Spark 0.3a 64-bit 4CPU2963+18
−17		(−178)49.5 − 15.5
(+39−5=21)
76.2%
49.5 / 65
100.0%
+1
= 1 = 0 1 0 1 1 = 1 = 1 1 1 1 = 1 = 1 1 1 = = 1 1 = 1 0 1 = 1 = 1 1 1 = = 1 = 1 = = 1 1 = = 1 1 1 1 1 1 1 0 1 = 1 0 1 1 = 1 1 1 =
–   Onno 1.2.70 64-bit 4CPU2956+12
−12		(−185)40 − 10
(+31−1=18)
80.0%
40.0 / 50
100.0%
+18
= 1 = 1 = = = 1 0 1 1 = 1 1 = 1 = 1 1 = = 1 1 = 1 1 = 1 1 1 1 = 1 1 1 1 = 1 1 1 1 1 = = 1 1 = 1 = 1
–   Thinker 5.4c Inert 64-bit 4CPU2954+8
−8		(−187)48 − 17
(+37−6=22)
73.8%
48.0 / 65
100.0%
−25
= 1 0 1 1 1 1 1 1 1 = 1 1 = 1 1 1 0 1 1 = 1 1 1 1 1 = 0 1 = 1 = 1 = = 1 = 1 1 1 1 = 1 = = 1 0 = = = = = 1 1 1 = 1 1 = 0 1 = 1 0 =
–   Protector 1.3.4 64-bit 4CPU2952+13
−13		(−189)50 − 14
(+39−3=22)
78.1%
50.0 / 64
100.0%
+3
= = = = = 1 = 1 1 1 1 1 = = 1 = 1 1 1 1 1 1 = 1 1 1 1 1 1 1 = 1 1 1 = 1 0 1 = 1 1 1 = 1 1 = = 1 = 0 1 = = 1 1 = = = 1 1 1 1 0 1
–   Deep Junior 11.1a 64-bit 4CPU2943+14
−14		(−198)49.5 − 15.5
(+41−7=17)
76.2%
49.5 / 65
100.0%
−8
= = = 0 1 1 = 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 = = 1 1 1 = 1 = 1 = 1 1 = = 0 1 1 0 1 1 1 = 1 1 = 1 0 1 = 0 1 0 = 1 1 = =
–   Hiarcs 12 4CPU2942+9
−9		(−199)47 − 18
(+35−6=24)
72.3%
47.0 / 65
100.0%
−51
1 0 = 1 = 1 1 1 = 0 = 1 0 = = 1 1 0 1 = = = 1 1 = = 1 1 1 = 1 1 = 1 = 1 = 1 1 = 1 = = 1 0 1 1 1 1 = 1 1 = 0 1 = = 1 = 1 1 1 = 1 1
–   Deep Sjeng WC2008 64-bit 4CPU2941+8
−8		(−200)47.5 − 17.5
(+38−8=19)
73.1%
47.5 / 65
100.0%
−38
0 1 1 = = = = 1 1 0 = 0 1 = = 1 = 0 1 0 1 = 1 0 1 = = = 1 = 1 = 1 = 1 = 1 1 = 1 1 1 = 1 1 0 1 1 1 = 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1
–   Hiarcs 12.1 4CPU2939+10
−10		(−202)52 − 13
(+42−3=20)
80.0%
52.0 / 65
100.0%
+9
1 = 1 = 1 1 1 = 1 1 = 1 1 1 = 1 1 1 = 1 1 1 1 1 1 = = 1 = 1 1 1 1 = 1 = 0 0 = = 1 = 1 1 = 1 = 1 1 1 1 1 1 1 0 1 1 = = 1 = 1 = 1 1
–   Komodo 1.0 64-bit2933+12
−11		(−208)51.5 − 13.5
(+42−4=19)
79.2%
51.5 / 65
100.0%
−1
1 0 1 1 0 = 1 = = 1 1 = 1 1 = 1 1 1 = = 1 1 = 1 1 1 1 = 0 1 1 1 1 = 1 1 1 1 1 1 = = = 1 1 1 1 1 0 1 1 1 1 = 1 1 1 1 = = 1 = = 1 =
–   Deep Sjeng 3.0 64-bit 4CPU2931+9
−9		(−210)52 − 13
(+45−6=14)
80.0%
52.0 / 65
100.0%
+19
1 0 = 1 1 = 1 1 = 1 1 1 1 1 = 1 1 1 1 = 1 0 = 1 1 1 = = 1 1 1 1 1 = 1 1 1 1 1 1 1 = 1 1 1 = = 0 = 1 1 1 1 1 = 1 1 0 1 1 1 0 1 1 0
–   Deep Junior 11.2 64-bit 4CPU2925+17
−17		(−216)40.5 − 9.5
(+34−3=13)
81.0%
40.5 / 50
100.0%
+11
1 1 1 = 1 1 = = 1 1 1 = 1 1 1 1 1 1 0 1 = 1 1 = 1 1 1 1 1 1 0 1 1 1 1 = = 1 = 1 = 1 = = = 1 1 1 0 1
–   Critter 0.60 64-bit 4CPU2912+23
−23		(−229)42 − 8
(+35−1=14)
84.0%
42.0 / 50
100.0%
+20
= 1 1 1 1 1 = 1 1 1 = 1 1 = 1 = = 1 1 1 1 1 1 1 1 = 1 1 1 1 = 1 = 1 = 1 0 1 = 1 1 1 1 = = 1 1 1 = 1
–   Toga II 1.4 beta5c 4CPU2905+9
−9		(−236)56.5 − 8.5
(+49−1=15)
86.9%
56.5 / 65
100.0%
+51
1 1 1 1 = = 1 1 1 1 = = 1 1 1 1 1 1 1 1 1 1 1 = 1 1 = 1 1 1 1 1 = 1 = = = 1 1 1 1 1 = 1 1 1 1 1 1 1 0 1 1 1 1 = 1 1 = 1 1 1 1 = =
–   Bright 0.5c 4CPU2904+13
−14		(−237)56 − 9
(+51−4=10)
86.2%
56.0 / 65
100.0%
+66
= 1 1 1 1 1 = 0 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 = 1 1 = = = 1 1 1 1 = 1 = 1 1 1 1 1 = 1 1 1 1 1 1 1 1 0 1 1 1 = 1 1 1 0 1 1 1 1
2052 games: 1004 wins, 261 losses, 787 draws (38.4%), score: 68.1%

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Created in 2005-2013 by CCRL team
Last games added on February 27, 2021