Dedicated Chess Computers

Rare Dedicated Chess Computers

Tasc R40 version 2.5

Written by MMO
First edited | 01/26/2014 | by MMO
Last edited | 07/12/2016 |
Additional Information:  original photos are from the ChessEval collection © MMO 2014 -  
Other Information:; Wiki-Elo-Liste



This TASC R40 is accompanied by the TASC Smartboard Tournament (55cm X 55cm [22"x22"]).
Both of them are rare. The ensemble is probably unique.

Hardware and Printed Circuit Board (PCB)

The microprocessor is a VLSI VY86C061PSTC PROTO A.
Only few of them were distributed, essentially prototypes, with the purpose to allow some companies to develop their products.
But, after a while, VLSI discontinued this model and jumped to the next step of development.
Consequently, the R40 could never be truly commercialized: 2 or 3 prototypes (essentially R30 modified by TASC in R40 running the OS system of the R30) and no more than 4 using the remaining microprocessors.
The company went out of business very shortly after because of an American judgment for copyright infringement of the piece recognition technology. 

The clock has a frequency of 40 MHz.
This explains the need for a fan and a plaque of metal.

Two green labels on the side, near the clock.

 TASC R40 Characteristics
- ELO: 2400
- 1994
- Program: The King by Johan de Koning
- Processor: VLSI VY86C061PSTC PROTO A, 32-bit RISC
- 40 MHz
- RAM: 1 MB
- EPROM: 256KB
- Library: more than 100,000 half-moves
- Metallic plaque on the bottom to reduce the heat
- One fan
- LCD Display
- Price: 2500 Euros

David Bronstein versus TASC R40 1-0

1. e4 e5 2. f4 Bc5 3. Nf3 d6 4. c3 f5
5. fxe5 dxe5 6. d4 exd4 7. e5 Ne7 8. cxd4 Bb4
9. Bd2 Bxd2 10. Qxd2 Be6 11. Nc3 Nbc6 12. Bb5 Qd7
13. O-O O-O 14. Rac1 Rad8 15. Rfd1 Bf7 16. Qf2 Qe6
17. Ng5 Qg6 18. Nxf7 Qxf7 19. b3 Nb4 20. Bc4 Nbd5
21. e6 Qxe6 22. Re1 Qh6 23. Nxd5 Nxd5 24. Bxd5 Rxd5
25. Rxc7 Qf6 26. Ree7 Kh8 27. h3 Rxd4 28. Kh2 Rd1
29. Qf4 Qb6 30. Qe3 Qxe3 31. Rxe3 f4 32. Ree7 Rg8
33. Rf7 Ra1 34. a4 b6 35. Rxf4 Rb1 36. Rf3 a5
37. Rb7 h6 38. Rxb6 Ra8 39. Rb7 Rd1