CCRL 40/15
Downloads and Statistics
November 16, 2024
Testing summary:
Total: 1'967'497 games
played by 3'973 programs

White wins: 610'660 (31.0%)
Black wins: 425'811 (21.6%)
Draws: 931'026 (47.3%)
White score: 54.7%

Engine Details

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Fat Fritz 2 64-bit (3562+7
−7		)Quote
Authors: Marco Costalba, Joona Kiiski, Stockfish team members Links: List of Authors, Homepage, Development Versions, Testing Framework, Freee and Open Source Software at Chessbase, Chessbase Explanatory Notes, Stockfish Legal Settlment Announcement, Software Freedom Conservancy
Stockfish was originally based on Glaurung by Tord Romstad. Fat Fritz 2 is a version of an opensource Stockfish binary modified to use an NNUE network trained and developed by Albert Silver. It has been marketed by Chessbase. In November 2022, a legal settlement regarding GPL compliance in respect of Fat Fritz 2 and Houdini 6 was reached between Chessbase and the Stockfish team, see links above. It is now downloadable free of charge from the Chesbase FOSS link.
This is one of the 152 Stockfish versions we tested: Compare them!
OpponentEloDiffResultsScoreLOSPerf
–   Stockfish 15.1 64-bit3615+9
−9		(+53)22.5 − 33.5
(+0−11=45)
40.2%
22.5 / 56
0.0%
−4
–   Stockfish 2021-01-11 64-bit 4CPU3612+13
−13		(+50)24.5 − 27.5
(+1−4=47)
47.1%
24.5 / 52
0.0%
+34
–   ShashChess 26.0 64-bit3605+13
−13		(+43)25 − 31
(+0−6=50)
44.6%
25.0 / 56
0.0%
+11
–   Stockfish 15 64-bit3602+10
−10		(+40)33.5 − 40.5
(+0−7=67)
45.3%
33.5 / 74
0.0%
+13
–   Stockfish 060122 64-bit3600+11
−11		(+38)24 − 28
(+0−4=48)
46.2%
24.0 / 52
0.0%
+16
–   Dragon by Komodo 3.2 64-bit3595+9
−9		(+33)25 − 31
(+0−6=50)
44.6%
25.0 / 56
0.0%
+1
–   ShashChess 22 64-bit3592+13
−13		(+30)25.5 − 26.5
(+0−1=51)
49.0%
25.5 / 52
0.0%
+24
–   Dragon by Komodo 3.1 64-bit3590+11
−11		(+28)33.5 − 36.5
(+2−5=63)
47.9%
33.5 / 70
0.0%
+14
–   ShashChess 21.1 64-bit3587+14
−14		(+25)25.5 − 26.5
(+0−1=51)
49.0%
25.5 / 52
0.0%
+20
–   SugaR AI 2.50 64-bit3585+10
−10		(+23)27.5 − 30.5
(+0−3=55)
47.4%
27.5 / 58
0.0%
+8
–   Dragon by Komodo 3 64-bit3583+12
−12		(+21)26.5 − 29.5
(+2−5=49)
47.3%
26.5 / 56
0.1%
+4
–   Stockfish 14.1 64-bit3581+11
−11		(+19)25 − 33
(+0−8=50)
43.1%
25.0 / 58
0.1%
−20
–   ShashChess 20.2 64-bit3576+15
−15		(+14)25 − 27
(+0−2=50)
48.1%
25.0 / 52
3.5%
+3
–   Stockfish 14 64-bit3576+14
−14		(+14)25 − 27
(+0−2=50)
48.1%
25.0 / 52
3.0%
+2
–   Stockfish 13 64-bit3575+16
−16		(+13)41.5 − 40.5
(+2−1=79)
50.6%
41.5 / 82
6.1%
+16
–   Stockfish 2021-01-11 64-bit3574+12
−12		(+12)25 − 27
(+2−4=46)
48.1%
25.0 / 52
3.1%
0
–   Dragon by Komodo 2.6 64-bit3572+12
−12		(+10)24.5 − 27.5
(+0−3=49)
47.1%
24.5 / 52
5.6%
−6
–   Dragon by Komodo 64-bit 4CPU3567+13
−13		(+5)17.5 − 14.5
(+3−0=29)
54.7%
17.5 / 32
26.1%
+32
–   ShashChess 19.3 64-bit3565+14
−14		(+3)25 − 27
(+0−2=50)
48.1%
25.0 / 52
32.0%
−8
–   Dragon by Komodo 2.5 64-bit3563+13
−13		(+1)3 − 3
(+0−0=6)		50.0%
3.0 / 6
42.0%
+1
–   SugaR AI 1.00 64-bit3554+12
−12		(−8)25.5 − 26.5
(+2−3=47)
49.0%
25.5 / 52
89.2%
−13
–   Berserk 11.1 64-bit3553+9
−9		(−9)25.5 − 26.5
(+0−1=51)
49.0%
25.5 / 52
95.1%
−14
–   ShashChess 15.0 64-bit3549+11
−11		(−13)26 − 26
(+1−1=50)
50.0%
26.0 / 52
98.7%
−13
–   Ethereal 14.00 64-bit3534+9
−9		(−28)27.5 − 24.5
(+4−1=47)
52.9%
27.5 / 52
100.0%
−11
–   Dragon by Komodo 64-bit3533+10
−10		(−29)28 − 28
(+0−0=56)
50.0%
28.0 / 56
100.0%
−29
–   Dragon by Komodo 2 64-bit3531+12
−12		(−31)29.5 − 22.5
(+8−1=43)
56.7%
29.5 / 52
100.0%
+8
–   Koivisto 9.0 64-bit3527+7
−7		(−35)31.5 − 20.5
(+11−0=41)
60.6%
31.5 / 52
100.0%
+29
–   Berserk 10 64-bit3520+10
−10		(−42)28.5 − 21.5
(+7−0=43)
57.0%
28.5 / 50
100.0%
0
–   Revenge 3.0 64-bit3518+7
−7		(−44)41 − 33
(+9−1=64)
55.4%
41.0 / 74
100.0%
−12
–   Berserk 9 64-bit3514+11
−11		(−48)37 − 29
(+12−4=50)
56.1%
37.0 / 66
100.0%
−10
–   RubiChess 20221120 64-bit3511+10
−10		(−51)31 − 29
(+3−1=56)
51.7%
31.0 / 60
100.0%
−41
–   Rebel 16.2 64-bit3507+10
−10		(−55)30 − 22
(+8−0=44)
57.7%
30.0 / 52
100.0%
−9
–   Ethereal 13.75 64-bit3503+10
−10		(−59)44 − 30
(+15−1=58)
59.5%
44.0 / 74
100.0%
−2
–   Igel 3.4.0 64-bit3503+11
−11		(−59)29 − 23
(+6−0=46)
55.8%
29.0 / 52
100.0%
−25
–   Berserk 8.5.1 64-bit3492+10
−10		(−70)33 − 21
(+13−1=40)
61.1%
33.0 / 54
100.0%
0
–   Koivisto 8.0 64-bit3492+8
−8		(−70)51 − 27
(+24−0=54)
65.4%
51.0 / 78
100.0%
+25
–   SlowChess Blitz 2.9 64-bit3492+7
−7		(−70)48 − 30
(+19−1=58)
61.5%
48.0 / 78
100.0%
+1
–   Seer 2.6.0 64-bit3491+8
−8		(−71)35.5 − 24.5
(+11−0=49)
59.2%
35.5 / 60
100.0%
−17
–   Rebel 16.1 64-bit3490+12
−12		(−72)31 − 25
(+6−0=50)
55.4%
31.0 / 56
100.0%
−41
–   Ethereal 13.50 64-bit3483+11
−11		(−79)33.5 − 22.5
(+11−0=45)
59.8%
33.5 / 56
100.0%
−19
–   RubiChess 20220813 64-bit3476+12
−12		(−86)34 − 18
(+16−0=36)
65.4%
34.0 / 52
100.0%
+10
–   SlowChess Blitz 2.8 64-bit3476+9
−9		(−86)38.5 − 20.5
(+18−0=41)
65.3%
38.5 / 59
100.0%
+10
–   Rebel 16 64-bit3475+12
−12		(−87)33 − 19
(+14−0=38)
63.5%
33.0 / 52
100.0%
−3
–   Revenge 2.0 64-bit3472+10
−10		(−90)36.5 − 19.5
(+17−0=39)
65.2%
36.5 / 56
100.0%
+5
–   Igel 3.3.0 64-bit3471+13
−13		(−91)34 − 18
(+16−0=36)
65.4%
34.0 / 52
100.0%
+5
–   Berserk 8 64-bit3468+14
−14		(−94)33.5 − 18.5
(+15−0=37)
64.4%
33.5 / 52
100.0%
−3
–   rofChade 3.0 64-bit3467+7
−7		(−95)76 − 44
(+32−0=88)
63.3%
76.0 / 120
100.0%
−12
–   Uralochka 3.39d 64-bit3467+10
−10		(−95)14 − 10
(+4−0=20)		58.3%
14.0 / 24
100.0%
−45
–   RubiChess 20220223 64-bit3467+10
−10		(−95)39 − 21
(+18−0=42)
65.0%
39.0 / 60
100.0%
0
–   Koivisto 7.0 64-bit3460+11
−11		(−102)37 − 21
(+17−1=40)
63.8%
37.0 / 58
100.0%
−14
–   Minic 3.31 64-bit3458+11
−11		(−104)35.5 − 16.5
(+19−0=33)
68.3%
35.5 / 52
100.0%
+11
–   Ethereal 13.25 64-bit3457+11
−11		(−105)37 − 21
(+17−1=40)
63.8%
37.0 / 58
100.0%
−17
–   Minic 3.32 64-bit3456+10
−10		(−106)21 − 9
(+12−0=18)
70.0%
21.0 / 30
100.0%
+22
–   SlowChess Blitz 2.5 64-bit 4CPU3453+15
−15		(−109)21 − 11
(+10−0=22)
65.6%
21.0 / 32
100.0%
−12
–   Berserk 7.0 64-bit3450+14
−14		(−112)38 − 20
(+18−0=40)
65.5%
38.0 / 58
100.0%
−14
–   SlowChess Blitz 2.7 64-bit3449+13
−13		(−113)32.5 − 19.5
(+13−0=39)
62.5%
32.5 / 52
100.0%
−35
–   Seer 2.5.0 64-bit3445+9
−9		(−117)39 − 21
(+18−0=42)
65.0%
39.0 / 60
100.0%
−22
–   Minic 3.30 64-bit3444+11
−11		(−118)35.5 − 16.5
(+19−0=33)
68.3%
35.5 / 52
100.0%
−2
–   SlowChess Blitz 2.6 64-bit3439+13
−13		(−123)35 − 17
(+18−0=34)
67.3%
35.0 / 52
100.0%
−13
–   Igel 3.2.0 64-bit3438+16
−16		(−124)20.5 − 9.5
(+11−0=19)
68.3%
20.5 / 30
100.0%
−6
–   RubiChess 2021 64-bit3435+13
−13		(−127)33 − 19
(+14−0=38)
63.5%
33.0 / 52
100.0%
−42
–   Arasan 23.4 64-bit3427+9
−9		(−135)42 − 14
(+28−0=28)
75.0%
42.0 / 56
100.0%
+32
–   Rebel 15.1a 64-bit3426+13
−13		(−136)22.5 − 9.5
(+13−0=19)
70.3%
22.5 / 32
100.0%
−2
–   RubiChess 2.2 64-bit3422+10
−10		(−140)41.5 − 16.5
(+25−0=33)
71.6%
41.5 / 58
100.0%
0
–   Rebel 15.1 64-bit3421+11
−11		(−141)37.5 − 14.5
(+24−1=27)
72.1%
37.5 / 52
100.0%
+7
–   Wasp 6.50 64-bit3419+10
−10		(−143)19 − 6
(+13−0=12)		76.0%
19.0 / 25
100.0%
+34
–   Ethereal 13.00 64-bit3419+14
−14		(−143)40.5 − 13.5
(+27−0=27)
75.0%
40.5 / 54
100.0%
+24
–   Uralochka 3.38c 64-bit3418+12
−12		(−144)16 − 8
(+8−0=16)		66.7%
16.0 / 24
100.0%
−37
–   Igel 2.8.0 64-bit 4CPU3418+18
−18		(−144)21 − 11
(+10−0=22)
65.6%
21.0 / 32
100.0%
−45
–   Revenge 1.0 64-bit3410+10
−10		(−152)35 − 17
(+18−0=34)
67.3%
35.0 / 52
100.0%
−42
–   Koivisto 6.0 64-bit3409+11
−11		(−153)37.5 − 14.5
(+23−0=29)
72.1%
37.5 / 52
100.0%
−6
–   Nemorino 6.00 64-bit3407+7
−7		(−155)36 − 16
(+20−0=32)
69.2%
36.0 / 52
100.0%
−31
–   Minic 3.22 64-bit3405+13
−13		(−157)25.5 − 10.5
(+15−0=21)
70.8%
25.5 / 36
100.0%
−20
–   Arasan 23.3 64-bit3405+10
−10		(−157)38 − 14
(+24−0=28)
73.1%
38.0 / 52
100.0%
−4
–   Berserk 6.0 64-bit3402+13
−13		(−160)39.5 − 12.5
(+27−0=25)
76.0%
39.5 / 52
100.0%
+16
–   Seer 2.4.0 64-bit3401+9
−9		(−161)38 − 14
(+24−0=28)
73.1%
38.0 / 52
100.0%
−8
–   Minic 3.24 64-bit3401+11
−11		(−161)38.5 − 13.5
(+26−1=25)
74.0%
38.5 / 52
100.0%
+4
–   Igel 3.0.5 64-bit3396+8
−8		(−166)38.5 − 13.5
(+25−0=27)
74.0%
38.5 / 52
100.0%
−6
–   SlowChess Blitz 2.54 64-bit3396+20
−20		(−166)38 − 14
(+24−0=28)
73.1%
38.0 / 52
100.0%
−13
–   RubiChess 2.1 64-bit3393+13
−13		(−169)39 − 13
(+26−0=26)
75.0%
39.0 / 52
100.0%
0
–   Houdini 6 64-bit3392+5
−5		(−170)41.5 − 10.5
(+31−0=21)
79.8%
41.5 / 52
100.0%
+40
–   Fire 8 64-bit3389+8
−8		(−173)41 − 11
(+30−0=22)
78.8%
41.0 / 52
100.0%
+28
–   SlowChess Blitz 2.5 64-bit3389+12
−12		(−173)37.5 − 14.5
(+23−0=29)
72.1%
37.5 / 52
100.0%
−27
–   Xiphos 0.6 64-bit 4CPU3386+10
−10		(−176)27.5 − 4.5
(+23−0=9)
85.9%
27.5 / 32
100.0%
+97
–   Pedone 3.1 64-bit3384+9
−9		(−178)38.5 − 13.5
(+25−0=27)
74.0%
38.5 / 52
100.0%
−16
–   Fire 8.1 64-bit3383+13
−13		(−179)40 − 12
(+29−1=22)
76.9%
40.0 / 52
100.0%
+9
–   Halogen 11 64-bit3380+9
−9		(−182)15.5 − 8.5
(+7−0=17)		64.6%
15.5 / 24
100.0%
−91
–   Ethereal 12.75 64-bit3378+9
−9		(−184)43 − 9
(+34−0=18)
82.7%
43.0 / 52
100.0%
+54
–   Igel 3.0.0 64-bit3373+14
−14		(−189)42 − 10
(+32−0=20)
80.8%
42.0 / 52
100.0%
+29
–   Nemorino 6.05 64-bit3363+9
−9		(−199)17.5 − 6.5
(+11−0=13)		72.9%
17.5 / 24
100.0%
−46
–   SlowChess Blitz 2.4 64-bit3357+13
−13		(−205)43.5 − 8.5
(+35−0=17)
83.7%
43.5 / 52
100.0%
+43
–   Rebel 15 64-bit3343+16
−16		(−219)15 − 5
(+10−0=10)		75.0%
15.0 / 20
100.0%
−49
–   RubiChess 2.0 64-bit3334+12
−12		(−228)43.5 − 8.5
(+35−0=17)
83.7%
43.5 / 52
100.0%
+20
–   Fritz 18 Neuronal 64-bit3330+13
−13		(−232)12.5 − 1.5
(+11−0=3)		89.3%
12.5 / 14
100.0%
+84
–   Igel 2.9.0 64-bit3325+11
−11		(−237)41 − 11
(+30−0=22)
78.8%
41.0 / 52
100.0%
−34
–   RubiChess 1.9 64-bit3317+12
−12		(−245)47 − 5
(+42−0=10)
90.4%
47.0 / 52
100.0%
+87
–   Booot 6.5 64-bit3313+9
−9		(−249)42.5 − 7.5
(+35−0=15)
85.0%
42.5 / 50
100.0%
+13
–   Fire 7.1 64-bit3311+7
−7		(−251)45.5 − 6.5
(+39−0=13)
87.5%
45.5 / 52
100.0%
+41
–   Xiphos 0.6 64-bit3303+7
−7		(−259)45.5 − 6.5
(+39−0=13)
87.5%
45.5 / 52
100.0%
+33
–   Pedone 3.0 64-bit3296+11
−11		(−266)46 − 6
(+40−0=12)
88.5%
46.0 / 52
100.0%
+39
–   rofChade 2.3 64-bit3292+8
−8		(−270)45 − 7
(+38−0=14)
86.5%
45.0 / 52
100.0%
+10
–   Booot 6.4 64-bit3286+8
−8		(−276)48.5 − 3.5
(+45−0=7)
93.3%
48.5 / 52
100.0%
+108
5248 games: 1562 wins, 96 losses, 3590 draws (68.4%), score: 64.0%

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Created in 2005-2013 by CCRL team
Last games added on November 16, 2024