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Rating + - Games Won Oppo
------ --- --- ----- --- ----
1 Rebel 8.0 Pentium 90 MHz 2462 27 -26 736 67% 2336
2 MChess Pro 6.0 Pentium 90 MHz 2435 27 -27 683 62% 2350
3 Hiarcs 5.0 Pentium 90 MHz 2427 67 -63 121 60% 2359
4 Genius 5.0 Pentium 90 MHz 2420 30 -29 558 59% 2352
5 Rebel 6.0 Pentium 90 MHz 2412 31 -30 540 60% 2340
6 Genius 4.0 Pentium 90 MHz 2411 25 -25 809 64% 2312
6 MChess Pro 5.0 Pentium 90 MHz 2411 26 -25 759 62% 2321
6 Genius 3.0 Pentium 90 MHz 2411 27 -26 706 62% 2327
9 Rebel 7.0 Pentium 90 MHz 2408 27 -26 703 61% 2327
10 Hiarcs 4.0 Pentium 90 MHz 2390 27 -27 677 55% 2355
11 Nimzo 3.0 Pentium 90 MHz 2387 27 -27 686 58% 2329
12 Chessmaster 5000 Pentium 90 MHz 2386 49 -45 239 67% 2262
13 Hiarcs 3.0 Pentium 90 MHz 2379 30 -30 545 56% 2334
13 Genius 4.0 486/50-66 MHz 2379 28 -28 628 57% 2328
15 R30 v. 2.5 2365 48 -45 241 66% 2248
16 MChess Pro 4.0 Pentium 90 MHz 2360 29 -29 578 52% 2344
17 Junior 3.3-3.5 Pentium 90 MHz 2359 41 -42 281 47% 2380
18 Genius 3.0 486/50-66 MHz 2358 24 -23 910 62% 2271
19 Fritz 3.0 Pentium 90 MHz 2354 26 -26 735 53% 2334
20 MChess Pro 5.0 486/50-66 MHz 2342 29 -29 569 54% 2314
21 Mephisto Genius 2.0 486/50-66 MHz 2339 23 -23 917 58% 2280
22 Rebel 7.0 486/50-66 MHz 2338 27 -27 650 52% 2321
23 Fritz 4.0 Pentium 90 MHz 2336 41 -40 304 59% 2270
24 Kallisto 1.98 Pentium 90 MHz 2334 28 -29 600 48% 2348
25 WChess 1.06 Pentium 90 MHz 2322 27 -28 640 47% 2343
26 MChess Pro 4.0 486/50-66 MHz 2314 24 -24 846 53% 2290
27 Chess Machine 30-32 MHz Schroder 3.1 2302 32 -30 546 68% 2171
27 WChess 1.03 486/50-66 MHz 2302 27 -27 677 49% 2308
29 Hiarcs 3.0 486/50-66 MHz 2301 24 -24 841 51% 2293
30 Rebel 6.0 486/50-66 MHz 2300 24 -23 884 55% 2266
31 Meph Genius 68 030 33 MHz 2299 47 -46 228 57% 2252
32 Ch.Machine 30 MHz King 2.0 aggr/R30 off 2295 21 -21 1173 65% 2187
33 Chessmaster 4000 486/50-66 MHz 2292 34 -33 462 66% 2172
34 Chess Genius 1.0 486/50-66 MHz 2286 23 -23 931 54% 2258
35 Rebel Decade Pentium 90 MHz 2281 29 -30 563 45% 2318
36 Chess Machine 30 MHz Schroder 3.0 2274 62 -55 168 73% 2102
37 Mephisto Gideon Pro 486/50-66 MHz 2272 35 -34 421 62% 2183
38 MChess Pro 3.5 486/50-66 MHz 2271 23 -23 926 52% 2254
39 MChess Pro 3.12 486/50-66 MHz 2265 36 -34 438 69% 2122
40 Fritz 3.0 486/50-66 MHz 2256 22 -22 1020 51% 2251
41 Mephisto Lyon 68030 36 MHz 2253 28 -27 696 69% 2109
42 Chess Genius 1.0 486/33 MHz 2243 32 -32 463 50% 2243
43 Mephisto Portorose 68030 36 MHz 2237 40 -36 407 77% 2028
44 Mephisto Vancouver 68030 36 MHz 2233 37 -34 451 73% 2057
45 MChess Pro 3.12 486/33 MHz 2227 50 -48 208 60% 2153
46 Comet32 Pentium 90 MHz 2224 34 -36 415 35% 2336
47 Berlin Pro 68 020 24 MHz 2223 25 -25 796 59% 2156
48 Kallisto 1.82-1.83 486/50-66 MHz 2217 22 -22 1017 43% 2268
49 Kasparov SPARC 20 MHz 2213 25 -25 758 51% 2203
50 Mephisto RISC 1 MB ARM 2 14 MHz 2202 21 -21 1145 57% 2153
51 Hiarcs Master 2.0 486/33 MHz 2201 46 -46 229 51% 2192
52 MChess 1.1-1.71 486/33 MHz 2193 44 -40 326 74% 2015
52 Chess Machine Schroder 512K ARM2 16MHz 2193 27 -26 703 62% 2109
54 Saitek RISC 2500 ARM2 14 MHz 128K 2192 22 -21 1062 56% 2148
55 Mephisto Montreux ARM 14 MHz 512K 2187 32 -30 588 73% 2014
56 Chess Machine The King 512K ARM2 16MHz 2175 32 -32 473 55% 2137
57 Mephisto Vancouver 68020 12 MHz 2160 23 -22 998 66% 2046
58 Mephisto Lyon 68020 12 MHz 2151 19 -18 1442 59% 2087
59 Socrates 3.0 486/33 MHz 2141 49 -50 203 47% 2162
60 Fritz 2.0 486/33 MHz 2131 30 -31 527 45% 2166
61 Mephisto Portorose 68020 12 MHz 2127 26 -24 896 73% 1956
62 M Chess 1.1-1.71 386/25-33 MHz 2126 36 -35 408 65% 2017
63 Fidelity Elite 68030 32 MHz (vers.9) 2124 35 -34 436 65% 2012
64 Mephisto Berlin 68 000 12 MHz 2116 23 -23 926 57% 2063
65 Mephisto Lyon 68000 12 MHz 2104 21 -21 1090 58% 2048
66 Mephisto Vancouver 68000 12 MHz 2101 22 -22 1022 56% 2061
67 Mephisto MM 4 Turbo Kit 6502 16 MHz 2092 46 -42 292 73% 1918
68 Novag Sapphire H8 10 MHz 2087 23 -23 933 49% 2096
69 Fidelity Mach IV 68020 20 MHz 2073 19 -19 1378 51% 2067
69 Mephisto Almeria 68020 12 MHz 2073 42 -40 305 62% 1985
71 Hiarcs Master 1.0 486/33 MHz 2070 48 -48 214 48% 2087
72 Mephisto Portorose 68000 12 MHz 2045 26 -25 787 63% 1953
73 Mephisto Polgar 6502 10 MHz 2042 43 -41 283 59% 1979
74 Fritz 1.0 486/33 MHz 2041 48 -47 215 55% 2008
74 Gandalf 2.1 Pentium 90 MHz 2041 47 -52 230 27% 2215
76 Fidelity Elite 68000 x 2 (vers. 5) 2036 49 -48 209 57% 1987
77 Nimzo 2.2.1 486/33 MHz 2034 46 -47 229 42% 2088
78 Mephisto Roma 68020 14 MHz 2029 27 -26 712 65% 1919
78 Zarkov 3.0 486/25-33 MHz 2029 46 -48 232 39% 2108
78 Rex Chess 2.3 386/25-33 MHz 2029 65 -62 126 59% 1964
81 Mephisto Dallas 68020 14 MHz 2023 35 -32 492 72% 1861
82 Mephisto Almeria 68000 12 MHz 2020 32 -30 534 67% 1898
82 Zarkov 2.5 386/25-33 MHz 2020 56 -53 168 61% 1941
84 Kasparov Brute Force H8 10 MHz 2018 23 -23 906 44% 2058
85 Fritz 1.0 386/25-33 MHz 2007 66 -67 113 46% 2038
86 Novag Diablo 68000 16 MHz 2005 21 -21 1117 41% 2072
87 Fidelity Mach III 68000 16 MHz 1993 14 -14 2410 52% 1980
88 Complete Chess System 486/33 MHz 1984 47 -47 221 47% 2006
89 Mephisto MM 5 6502 5 MHz 1977 19 -19 1314 48% 1990
90 Kasparov President/GK-2100 H8 10 MHz 1976 29 -30 558 47% 1998
91 Mephisto Dallas 68000 12 MHz 1972 21 -21 1158 61% 1890
92 Mephisto Roma 68000 12 MHz 1970 18 -18 1519 56% 1927
93 Mephisto Polgar 6502 5 MHz 1969 17 -17 1733 41% 2033
94 Mephisto Milano 6502 5 MHz 1965 24 -25 820 42% 2025
95 Novag Super Expert C 6502 6 MHz Sel 5 1961 18 -18 1533 46% 1989
96 Zarkov 2.6 386/25-33 MHz 1960 64 -62 125 56% 1917
97 Mephisto Academy 6502 5 MHz 1937 18 -18 1495 44% 1978
98 Chessmaster 3000 386/25-33 MHz 1932 68 -74 103 36% 2030
99 Rex Chess 2.3 386/16-20 MHz 1930 53 -53 174 49% 1936
100 Saitek Leonardo Maestro B 6502 18 MHz 1928 73 -67 105 62% 1842
101 Mephisto Amsterdam 68000 12 MHz 1927 22 -22 1020 58% 1872
102 Novag Super Expert B 6502 6 MHz sel 4 1919 29 -29 564 48% 1935
103 Mephisto Mega IV 6502 4.9 MHz 1917 18 -18 1544 44% 1956
104 Saitek Maestro D 6502 10 MHz 1915 26 -26 736 51% 1909
105 Fidelity Excel Mach IIc 68000 12 MHz 1914 23 -23 955 50% 1911
106 Novag Expert Turbo Kit 6502 16 MHz 1910 67 -63 120 61% 1829
107 Mephisto MM 4 6502 5 MHz 1903 19 -19 1288 51% 1900
108 Fidelity Travel Master H8/330 10 MHz 1897 65 -79 123 22% 2112
109 Kasparov GK-2000 H8 10 MHz 1896 29 -29 593 42% 1952
109 Mephisto Modena 6502 4 MHz 1896 28 -29 615 41% 1959
111 Psion Atari 68000 8 MHz 1882 18 -18 1487 44% 1928
112 CXG Sphinx Galaxy 6502 4 MHz 1881 17 -18 1670 38% 1971
113 Novag Ruby H8 10 MHz 1878 30 -30 545 42% 1934
113 Fidelity Excel Mach IIa 68000 12 MHz 1878 46 -47 226 47% 1898
115 Saitek Turboking II 6502 5 MHz 1868 23 -23 963 37% 1964
116 Conchess Plymate Victoria 6502 5.5 MHz 1867 26 -27 701 40% 1941
117 Fidelity Excel Club 68000 12 MHz 1857 23 -23 931 51% 1848
118 Mephisto Mega IV Brute Force 1851 36 -37 382 40% 1921
119 Novag Super Expert/Forte A 6502 5 MHz 1836 19 -20 1318 39% 1917
120 Fidelity Par Excellence 6502 5 MHz 1835 22 -22 1022 48% 1846
120 Fidelity Avant Garde 6502 5 MHz 1835 20 -20 1196 46% 1866
122 Mephisto Rebell 6502 5 MHz 1825 19 -19 1373 39% 1907
123 Saitek Stratos/Analys B 6502 6 MHz 1820 20 -21 1213 38% 1908
124 Mephisto Super Mondial 6502 4 MHz 1818 19 -20 1335 37% 1908
125 Novag Forte B 6502 5 MHz 1816 24 -24 837 44% 1860
126 Saitek Leonardo Maestro A 6502 6 MHz 1811 30 -30 547 45% 1846
127 Novag Forte A 6502 5 MHz 1809 22 -22 964 48% 1822
128 Conchess Plymate 6502 5.5 MHz 1808 15 -16 2040 40% 1881
129 Saitek Simultano/Corona C 6502 5 MHz 1806 23 -24 969 33% 1932
130 Fidelity Excellence 6502 4 MHz 1800 18 -18 1565 43% 1852
131 Novag Expert 6502 4 MHz 1788 24 -24 843 42% 1847
132 Fidelity Elegance 6502 3.6 MHz 1781 40 -40 303 54% 1751
133 Conchess Plymate 6502 4 MHz 1779 39 -38 333 55% 1747
134 Mephisto MM 2 6502 3.7 MHz 1773 49 -48 208 52% 1756
135 Saitek Turbostar 432 6502 4 MHz 1765 22 -22 1005 45% 1802
136 Fidelity Excellence 6502 3 MHz 1757 22 -23 960 42% 1815
137 Saitek Kasparov Blitz 1734 45 -47 239 37% 1825
137 Novag Super Nova 1734 37 -38 350 40% 1802
139 Novag Super Constellation 6502 4 MHz 1731 18 -18 1626 35% 1840
140 Conchess Glasgow 6502 4 MHz 1720 39 -39 327 50% 1722
141 Chessplayer 2150 Atari/Amiga 1714 58 -63 146 33% 1837
142 The Final Chesscard 6502 5 MHz 1700 57 -64 156 27% 1871
143 Novag Super VIP 1688 53 -58 174 32% 1816
144 Chessmaster 2100 Amiga 68000 1687 65 -76 120 25% 1874
145 Mephisto Europa 1682 50 -52 190 42% 1741
146 Saitek Superstar 36K 6502 2 MHz 1678 23 -24 954 31% 1818
147 Fidelity Elite A/S 6502 3.2 MHz 1677 23 -24 1023 29% 1837
148 Chess Champion 2175 Atari/Amiga 1672 56 -62 157 30% 1821
149 Conchess Glasgow 6502 2 MHz 1667 24 -25 855 34% 1781
150 Novag Quattro 6502 4 MHz 1662 30 -31 560 33% 1790
151 Fidelity Prestige 6502 4 MHz 1660 64 -66 118 44% 1703
152 Chessmaster 2000 Atari 68000 8 MHz 1654 41 -45 312 25% 1841
153 Novag Constellation 6502 3.6 MHz 1648 31 -32 504 41% 1714
154 Novag Constellation Primo 1637 57 -59 149 44% 1683
155 Novag Constellation 6502 2 MHz 1597 32 -33 479 35% 1706
156 CXG Super Enterprise 1562 36 -39 386 28% 1726
Rating : ELO rating
+/- : deviation
Games : number of games played
Won : percentage of games won
Oppo : medium opponent ELO rating
By Thoralf Karlsson, thoralf.karlsson@mailbox.swipnet.se, Chairman of the SSDF
Since 1984 SSDF has provided a rating list for chess computers and chess programs. Until now 53.540 tournament games have been played between the computers, nowadays mostly automatically. Based on a formula by Arpad Elo, the results are transformed into rating figures which gives information about the relative strength of the chess programs. The level of the list is based on 337 serious tournament games against humans in Sweden, played between 1987 and 1991.
We have three new entrants on this first rating list of 1997. Highest rated among them is Hiarcs 5.0 Pentium 90 MHz with a rating of 2427. As can be seen on the list, this is 37 points more than Mark Uniackes last program, Hiarcs 4 P90, has. Due to the fact that we so far haven't played more than 121 games, the margin of error (with 95% probability) is 67 points. So more games are needed.
Unfortunately Hiarcs 5 has a rather grave program error, which clearly has lowered it's rating on this list. In eight games Hiarcs 5 has taken a draw by repetition in completely won positions!? If these games had become wins, the rating of Hiarcs 5 would have been 2452, which would have given a second place on the list. We look forward to a corrected version of Hiarcs 5.
The second newcomer is the latest chess program from Richard Lang. After 558 games with Genius 5.0 Pentium 90 MHz, it has got a rating of 2420, nine points more than Genius 4 P90. The most obvious conclusion is that these two programs are equally strong. The versions that we have tested are the DOS-versions, not the Windows-versions. Only the DOS-versions can be tested automatically.
Now and then we have the possibility to include completely new programs in our rating list. During the last months we have played 281 games with Junior 3.3-3.5 Pentium 90 MHz. This program has been made by Amir Ban and Shay Bushinsky and has earned a rating of 2359!
Rebel 8 P90 is number one on this list also, and MChess Pro 6 P90 has the second place. Compared to the last list they have lost 11 and 24 points respectively. Fritz 4 P90 has gone up twenty points and is now only 18 points behind Fritz 3 P90.
Now it's possible to download our testgames and have a look at them. Go to Tony Hedlund's home page at http://userweb.interact.se/~tonyh/welcome.htm. So far there are 2463 games in PGN or ChessBase format.
During the next month we will continue to play with Junior and Hiarcs 5. We have also started to play with Milano Pro and Nimzo 3.5 P90, but I'm not sure if they will be included on the next list.
There are no fixed dates for the rating list. But roughly they are made in early February, early March, mid-April, late May, July, early September, mid-October and late November.
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