Colossus X

[Fernando]

I have been playing this old program in my fast computer and he has beaten me after long games. It plays better than me, so it seems. How strong is in Elo terms?
Fern

[mychess]

Hi Fernando,

Same question and some answers in https://groups.google.com/g/rec.games.c ... euQYOPz4wJ in 1998...

Cordially.

[Fernando]

Man, I saw there a lot of things, even a psycho-analysis about mother sons, by a guy, but not Elo info.

Fern

[mclane]

[X__Gandalf__X]

Answered here - http://www.spacious-mind.com/html/atari ... ess_x.html

[Martin Hertz]

Hi Fernando,

here is the result of a tournament under real DOS at full speed (two 2.0 GHz Pentium M notebooks) and 30 sec/move average, where Colossus reached around 2 million nodes/s:

Code: Select all

                         MC5   Gid   CG3   WCh   Soc   MC1   CST   Fr2   Rex   Psi   Col   CPl   Tur

 1. M-Chess Pro 5.0       *    2.0   2.5   2.5   4.0   3.0   3.0   3.5   2.5   4.0   3.5   3.5   4.0     38.0/48  

 2. Gideon Pro 1.0       2.0    *    2.0   2.5   2.0   2.5   2.5   3.0   3.5   4.0   4.0   4.0   4.0     36.0/48   

 3. Chess Genius 3.0     1.5   2.0    *    2.0   3.0   3.0   3.0   3.0   4.0   3.0   3.0   4.0   4.0     35.5/48   

 4. WChess 1.05          1.5   1.5   2.0    *    3.5   2.0   1.5   2.5   3.0   3.0   3.0   4.0   4.0     31.5/48   

 5. Socrates 3.0         0.0   2.0   1.0   0.5    *    2.5   2.5   3.5   4.0   3.0   3.0   3.5   4.0     29.5/48   

 6. M-Chess 1.70         1.0   1.5   1.0   2.0   1.5    *    3.0   1.5   2.0   4.0   4.0   3.0   4.0     28.5/48   

 7. Chess System Tal     1.0   1.5   1.0   2.5   1.5   1.0    *    2.5   2.0   4.0   4.0   3.5   3.5     28.0/48   

 8. Fritz 2.51           0.5   1.0   1.0   1.5   0.5   2.5   1.5    *    3.0   3.0   3.5   3.5   4.0     25.5/48   

 9. RexChess 2.30        1.5   0.5   0.0   1.0   0.0   2.0   2.0   1.0    *    4.0   3.0   4.0   3.0     22.0/48   

10. Psion 2.13           0.0   0.0   1.0   1.0   1.0   0.0   0.0   1.0   0.0    *    3.0   3.5   4.0     14.5/48   

11. Colossus X           0.5   0.0   1.0   1.0   1.0   0.0   0.0   0.5   1.0   1.0    *    2.0   3.5     11.5/48   

12. Chess Player 2150    0.5   0.0   0.0   0.0   0.5   1.0   0.5   0.5   0.0   0.5   2.0    *    3.0      8.5/48   

13. Turbo Chess          0.0   0.0   0.0   0.0   0.0   0.0   0.5   0.0   1.0   0.0   0.5   1.0    *       3.0/48