The 2 versions (TSB4 Sandy, and France Double R) of La Regence are different on:
- their wood manufacture
- their legends: German versus French
- their electronics
- their program version of the Richard Lang's Cyrus (and maybe not even the Cyrus program during the first Tournament: "According to Kevin O’Connell, a La Regence program already played the ACM 1981 Blitz tournament still running on an Osborne Z80 based computer, beating Cray Blitz and Chess 4.5, and only losing from Belle [4]. However, the Philidor Software program which played the ACM 1981 main tournament was called Philidor with David Broughton and Mark Taylor mentioned as authors in the booklet" : PHILIDOR, authors: Broughton, Taylor (at site), Levy, Johnson on a Z-80 based microcomputer Assembly 28 Kb, 16 Kb 4,000 moves 400 nodes/seconde. "... and likely more related to Vega rather than Cyrus. A dedicated La Regence prototype played the European MCC 1982, and became unlucky runner up behind Advance 2.4 after losing in the final round by it's own stablemate Philidor". Obviously, the program of Lang was made by R. Lang for the count of Philidor Company owned by Levy and O'Connell, Still it was a different software version. The first version was more powerful than the second explaining the defeat of La Regence at the European MCC of 1982. The consequence was immediate and pushed the bankruptcy of the French company.
- follow this link to see the comparison in photos: http://forum.chesseval.com/viewtopic.php?f=36&t=1529
The following two Sandy Electronics TSB4 La Regence have differences.
First Computer
Second Computer
The electronic of these 2 Sandy Electronics TSB4 could be different, but I didn't open them (?)
The legends on the left and on the right are different.
Participants to the Twelfth ACM's North American Computer Chess Championship, Los Angeles, California November 8-10, 1981
Code: Select all
Program Authors Computing System Language Program Size Book Size Nodes/Sec.
DUCHESS Truscott IBM 370 Series Assembly 150 Kb 3,000 pos. 2, 500
L'EXCENTRIQUE Jarry Amdahl 470 V7 Assembly 13 Kb, 10 Kb 3,000 pos. 20,000
MYCHESS Kittinger Cromemco Z-2D Z-80 Assembly 224 Kb 9,000 pos. 70
NUCHESS Slate CDC Cyber 176 FORTRAN 100 K 400 K 5,700 pos. 1,200-2,200
OSTRICH Newborn 5-Nova Multiprocessing Assembly 10 K 12 K 1,000 pos. 500
PRODIGY Schaeffer VAX or Honeywell 6 600 C 100 Kb 10 Kb 1,500 moves
PHILIDOR Broughton Z-80 Assembly 28 Kb 16 Kb 4,000 moves 400
SCHACH 2.5 Engelbach Burroughs B 7800 Algol 60 Kb 6,000 pos. 700-1,300