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Rating + - Games Won Oppo
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1 MChess Pro 5.0 Pentium 90 MHz 2430 30 -28 608 65% 2320
2 Genius 3.0 Pentium 90 MHz 2421 30 -29 591 64% 2322
3 Rebel 7.0 Pentium 90 MHz 2414 29 -28 617 61% 2334
4 Rebel 6.0 Pentium 90 MHz 2413 33 -32 460 60% 2344
5 Genius 4.0 Pentium 90 MHz 2412 29 -28 651 66% 2297
6 Hiarcs 4.0 Pentium 90 MHz 2403 32 -32 485 58% 2345
7 Genius 4.0 486/50-66 MHz 2396 35 -35 405 59% 2332
8 Hiarcs 3.0 Pentium 90 MHz 2390 33 -32 461 58% 2335
9 MChess Pro 4.0 Pentium 90 MHz 2369 32 -31 488 53% 2345
10 Genius 3.0 486/50-66 MHz 2366 25 -24 825 64% 2263
11 Fritz 3.0 Pentium 90 MHz 2365 30 -29 569 56% 2324
12 R30 v. 2.5 2363 53 -49 208 69% 2222
13 MChess Pro 5.0 486/50-66 MHz 2360 35 -34 420 58% 2302
14 Rebel 7.0 486/50-66 MHz 2354 33 -32 467 56% 2311
15 Mephisto Genius 2.0 486/50-66 MHz 2342 25 -24 817 59% 2277
16 Kallisto 1.98 Pentium 90 MHz 2335 44 -45 247 48% 2347
17 WChess 1.06 Pentium 90 MHz 2320 32 -32 480 48% 2337
18 MChess Pro 4.0 486/50-66 MHz 2318 26 -25 746 55% 2285
19 WChess 1.03 486/50-66 MHz 2308 28 -28 617 49% 2317
20 Chess Machine 30-32 MHz Schröder 3.1 2305 32 -30 546 68% 2173
21 Rebel 6.0 486/50-66 MHz 2304 25 -25 799 56% 2262
21 Hiarcs 3.0 486/50-66 MHz 2304 26 -26 706 53% 2283
23 Meph Genius 68 030 33 MHz 2302 47 -46 228 57% 2256
24 Ch.Machine 30 MHz King 2.0 aggr/R30 off 2298 22 -21 1122 66% 2181
25 Chessmaster 4000 486/50-66 MHz 2294 34 -33 462 66% 2173
26 Chess Genius 1.0 486/50-66 MHz 2290 24 -24 856 56% 2250
27 Chess Machine 30 MHz Schröder 3.0 2276 62 -55 168 73% 2103
28 MChess Pro 3.5 486/50-66 MHz 2274 25 -24 816 54% 2243
29 Mephisto Gideon Pro 486/50-66 MHz 2273 35 -34 421 62% 2185
30 MChess Pro 3.12 486/50-66 MHz 2266 36 -34 438 69% 2123
31 Fritz 3.0 486/50-66 MHz 2260 24 -24 866 54% 2233
32 Mephisto Lyon 68030 36 MHz 2254 32 -30 602 75% 2066
33 Chess Genius 1.0 486/33 MHz 2247 32 -32 463 50% 2247
34 Mephisto Portorose 68030 36 MHz 2237 40 -36 407 77% 2028
35 Mephisto Vancouver 68030 36 MHz 2234 37 -34 451 73% 2058
36 MChess Pro 3.12 486/33 MHz 2229 50 -48 208 60% 2155
37 Kallisto 1.82-1.83 486/50-66 MHz 2223 24 -24 833 46% 2250
38 Berlin Pro 68 020 24 MHz 2218 26 -26 732 61% 2141
39 Kasparov SPARC 20 MHz 2211 27 -26 690 54% 2184
40 Mephisto RISC 1 MB ARM 2 14 MHz 2204 22 -22 1037 59% 2139
41 Hiarcs Master 2.0 486/33 MHz 2203 46 -46 229 51% 2194
42 Chess Machine Schröder 512K ARM2 16MHz 2194 27 -26 703 62% 2110
42 MChess 1.1-1.71 486/33 MHz 2194 44 -40 326 74% 2015
42 Saitek RISC 2500 ARM2 14 MHz 128K 2194 22 -22 1003 57% 2142
45 Mephisto Montreux ARM 14 MHz 512K 2183 40 -36 420 77% 1973
46 Chess Machine The King 512K ARM2 16MHz 2177 32 -32 473 55% 2138
47 Mephisto Vancouver 68020 12 MHz 2162 24 -23 966 67% 2037
48 Mephisto Lyon 68020 12 MHz 2148 19 -19 1361 61% 2072
49 Socrates 3.0 486/33 MHz 2143 49 -50 203 47% 2164
50 Fritz 2.0 486/33 MHz 2135 30 -31 527 45% 2169
51 Mephisto Portorose 68020 12 MHz 2127 26 -24 896 73% 1956
52 M Chess 1.1-1.71 386/25-33 MHz 2126 36 -35 408 65% 2017
53 Fidelity Elite 68030 32 MHz (vers.9) 2121 40 -37 372 73% 1952
54 Mephisto Berlin 68 000 12 MHz 2120 25 -24 812 58% 2060
55 Mephisto Lyon 68000 12 MHz 2104 22 -21 1068 58% 2047
56 Mephisto Vancouver 68000 12 MHz 2103 23 -22 971 57% 2055
57 Mephisto MM 4 Turbo Kit 6502 16 MHz 2092 46 -42 292 73% 1918
58 Novag Sapphire H8 10 MHz 2087 24 -24 852 50% 2087
59 Fidelity Mach IV 68020 20 MHz 2075 19 -19 1358 52% 2064
60 Mephisto Almeria 68020 12 MHz 2073 42 -40 305 62% 1986
61 Hiarcs Master 1.0 486/33 MHz 2072 48 -48 214 48% 2088
62 Gandalf 2.1 Pentium 90 MHz 2054 51 -56 188 31% 2198
63 Mephisto Portorose 68000 12 MHz 2042 26 -25 767 63% 1948
63 Mephisto Polgar 6502 10 MHz 2042 43 -41 283 59% 1979
65 Fritz 1.0 486/33 MHz 2041 48 -47 215 55% 2008
66 Fidelity Elite 68000 x 2 (vers. 5) 2036 49 -48 209 57% 1986
67 Nimzo 2.2.1 486/33 MHz 2035 46 -47 229 42% 2089
68 Zarkov 3.0 486/25-33 MHz 2031 46 -48 232 39% 2110
69 Mephisto Roma 68020 14 MHz 2029 27 -26 712 65% 1919
69 Rex Chess 2.3 386/25-33 MHz 2029 65 -62 126 59% 1964
71 Mephisto Dallas 68020 14 MHz 2022 35 -32 492 72% 1860
72 Mephisto Almeria 68000 12 MHz 2020 32 -30 534 67% 1898
72 Kasparov Brute Force H8 10 MHz 2020 23 -23 906 44% 2060
74 Zarkov 2.5 386/25-33 MHz 2019 56 -53 168 61% 1940
75 Fritz 1.0 386/25-33 MHz 2007 66 -67 113 46% 2038
76 Novag Diablo 68000 16 MHz 2006 21 -21 1103 41% 2073
77 Fidelity Mach III 68000 16 MHz 1993 14 -14 2404 52% 1980
78 Complete Chess System 486/33 MHz 1985 47 -47 221 47% 2007
79 Mephisto MM 5 6502 5 MHz 1979 19 -19 1288 49% 1988
80 Kasparov President/GK-2100 H8 10 MHz 1975 29 -30 558 47% 1998
81 Mephisto Dallas 68000 12 MHz 1971 21 -21 1148 62% 1887
81 Mephisto Polgar 6502 5 MHz 1971 17 -17 1693 42% 2030
83 Mephisto Roma 68000 12 MHz 1970 18 -18 1519 56% 1927
84 Mephisto Milano 6502 5 MHz 1965 24 -25 820 42% 2025
85 Novag Super Expert C 6502 6 MHz Sel 5 1961 18 -18 1531 46% 1989
86 Zarkov 2.6 386/25-33 MHz 1960 64 -62 125 56% 1917
87 Mephisto Academy 6502 5 MHz 1937 18 -18 1495 44% 1978
88 Chessmaster 3000 386/25-33 MHz 1932 68 -74 103 36% 2030
89 Rex Chess 2.3 386/16-20 MHz 1930 53 -53 174 49% 1936
90 Saitek Leonardo Maestro B 6502 18 MHz 1928 73 -67 105 62% 1842
91 Mephisto Amsterdam 68000 12 MHz 1926 22 -22 1020 58% 1872
92 Novag Super Expert B 6502 6 MHz sel 4 1920 29 -29 562 48% 1934
93 Mephisto Mega IV 6502 4.9 MHz 1917 18 -18 1544 44% 1956
94 Saitek Maestro D 6502 10 MHz 1915 26 -26 736 51% 1909
95 Fidelity Excel Mach IIc 68000 12 MHz 1914 23 -23 955 50% 1911
96 Novag Expert Turbo Kit 6502 16 MHz 1910 67 -63 120 61% 1829
97 Mephisto MM 4 6502 5 MHz 1903 19 -19 1288 51% 1900
98 Fidelity Travel Master H8/330 10 MHz 1898 65 -79 123 22% 2113
99 Kasparov GK-2000 H8 10 MHz 1896 29 -29 593 42% 1952
99 Mephisto Modena 6502 4 MHz 1896 28 -29 615 41% 1959
101 Psion Atari 68000 8 MHz 1882 18 -18 1487 44% 1928
102 CXG Sphinx Galaxy 6502 4 MHz 1881 17 -18 1670 38% 1971
103 Novag Ruby H8 10 MHz 1878 30 -30 545 42% 1934
104 Fidelity Excel Mach IIa 68000 12 MHz 1877 46 -47 226 47% 1898
105 Saitek Turboking II 6502 5 MHz 1868 23 -23 963 37% 1964
106 Conchess Plymate Victoria 6502 5.5 MHz 1867 26 -27 701 40% 1941
107 Fidelity Excel Club 68000 12 MHz 1857 23 -23 931 51% 1848
108 Mephisto Mega IV Brute Force 1852 36 -37 370 41% 1915
109 Novag Super Expert/Forte A 6502 5 MHz 1836 19 -20 1318 39% 1917
110 Fidelity Par Excellence 6502 5 MHz 1835 22 -22 1021 49% 1845
111 Fidelity Avant Garde 6502 5 MHz 1834 20 -20 1196 46% 1866
112 Mephisto Rebell 6502 5 MHz 1824 19 -19 1373 39% 1906
113 Saitek Stratos/Analys B 6502 6 MHz 1820 20 -21 1213 38% 1908
114 Mephisto Super Mondial 6502 4 MHz 1817 19 -20 1335 37% 1908
115 Novag Forte B 6502 5 MHz 1816 24 -24 837 44% 1860
116 Saitek Leonardo Maestro A 6502 6 MHz 1810 30 -30 547 45% 1846
117 Novag Forte A 6502 5 MHz 1809 22 -22 964 48% 1821
118 Conchess Plymate 6502 5.5 MHz 1808 15 -16 2040 40% 1881
119 Saitek Simultano/Corona C 6502 5 MHz 1806 23 -24 969 33% 1932
120 Fidelity Excellence 6502 4 MHz 1800 18 -18 1565 43% 1852
121 Novag Expert 6502 4 MHz 1788 24 -24 843 42% 1847
122 Fidelity Elegance 6502 3.6 MHz 1780 40 -40 303 54% 1751
123 Conchess Plymate 6502 4 MHz 1779 39 -38 333 55% 1747
124 Mephisto MM 2 6502 3.7 MHz 1772 49 -48 208 52% 1755
125 Saitek Turbostar 432 6502 4 MHz 1764 22 -22 1005 45% 1802
126 Fidelity Excellence 6502 3 MHz 1757 22 -23 960 42% 1815
127 Saitek Kasparov Blitz 1734 45 -47 239 37% 1825
127 Novag Super Nova 1734 37 -38 350 40% 1802
129 Novag Super Constellation 6502 4 MHz 1731 18 -18 1626 35% 1840
130 Conchess Glasgow 6502 4 MHz 1719 39 -39 327 50% 1721
131 Chessplayer 2150 Atari/Amiga 1714 58 -63 146 33% 1837
132 The Final Chesscard 6502 5 MHz 1700 57 -64 156 27% 1871
133 Novag Super VIP 1687 53 -58 174 32% 1816
133 Chessmaster 2100 Amiga 68000 1687 65 -76 120 25% 1874
135 Mephisto Europa 1682 50 -52 190 42% 1740
136 Saitek Superstar 36K 6502 2 MHz 1678 23 -24 954 31% 1818
137 Fidelity Elite A/S 6502 3.2 MHz 1677 23 -24 1023 29% 1836
138 Chess Champion 2175 Atari/Amiga 1672 56 -62 157 30% 1821
139 Conchess Glasgow 6502 2 MHz 1667 24 -25 855 34% 1781
140 Novag Quattro 6502 4 MHz 1662 30 -31 560 33% 1790
141 Fidelity Prestige 6502 4 MHz 1660 64 -66 118 44% 1702
142 Chessmaster 2000 Atari 68000 8 MHz 1654 41 -45 312 25% 1841
143 Novag Constellation 6502 3.6 MHz 1647 31 -32 504 41% 1714
144 Novag Constellation Primo 1637 57 -59 149 44% 1682
145 Novag Constellation 6502 2 MHz 1596 32 -33 479 35% 1705
146 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
Kallisto 1.98 Pentium 90 MHz is a new entrant on the present rating list. After 247 games it has a rating of 2335. It seems that this latest program from Bart Weststrate has been improved compared to Kallisto 1.82, which we only tested on 486. The playing strength of Kallisto 1.98 is about 80-90 points lower than that of the best programs on the list.
We have played 83 more games with Gandalf 2.1 P90, which was introduced on the last list. The rating has gone down seven points to 2054.
Most of the programs in the top have lost a few points compared to the list from the beginning of March. Exceptions are Hiarcs 4.0 P90, which now is 13 points higher than the earlier version, and Genius 4.0 486/50-66 MHz, which has gone up 12 points to 2396.
Marty Hirsch's MChess Pro 5.0 continues to hold the first place on the rating list, but within less than 30 points comes programs from Richard Lang, Ed Schröder and Mark Uniacke. The difference between them is not statistically significant, so it would be most correct to say that they are equally strong.
The difference between the same program on P90 and 486/50-66 MHz has now gone down to 64 points (16-109) in average. With the programs that we had tested last summer, the same figure looked more like 80-90 points.
We have just started to play with Fritz 4.0 Pentium 90 MHz. Due to the fact that we cannot play automatically with this Windows-program, the test procedure will last longer than with other programs, but it will probably be included on the next list in late May.
During the recent Aegon-tournament 50 programs played in six rounds against the equal number of humans. Nineteen of these entrants have been tested by SSDF, most of them in the form of an earlier program version on slower hardware. If you make adjustments for the faster hardware and assume (somewhat pessimistically) that the programs haven't been improved, the rating list would predict an average result for them of 2326. In the Aegon-tournament their average rating was 2336! This is in accordance with results of similar comparisons earlier years, where the Aegon-ratings have been about twenty points higher than our estimates.
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