Author: Christophe Theron
Date: 13:22:36 03/06/02
Go up one level in this thread
On March 06, 2002 at 16:11:04, Rich Van Gaasbeck wrote:
>I dusted off my old Chess Challenger 7 last night and played a game. Granted it
>was set at level 1, but I can't figure out why it would play 14...Qb6. All it
>had to do was move its queen to d7 or e8. Wouldn't even a 1978 computer do a
>full 4 ply search? Did the CC7 use selective searching at the root?
>
>[Event "?"]
>[Site "?"]
>[Date "2002.03.05"]
>[Round "?"]
>[White "Van Gaasbeck, Rich"]
>[Black "Chess Challenger 7, level 1"]
>[Result "1-0"]
>[ECO "C44"]
>[WhiteElo "1275"]
>[BlackElo "1100"]
>[Annotator "Van Gaasbeck,Rich"]
>[PlyCount "55"]
>
>{96MB, VANGAASBECKRI} 1. e4 e5 2. Nf3 Nc6 3. d4 Qf6 4. c3 Be7 5. Bg5 Qd6 6. d5
>Bxg5 7. Nxg5 Nce7 8. Be2 Nf6 9. Qc2 O-O 10. Nd2 Qc5 11. O-O d6 12. b4 Qb6 13.
>Nc4 Qb5 14. Nb2 Qb6 15. Na4 Bg4 16. Nxb6 axb6 17. Bxg4 Nxg4 18. f3 Ne3 19. Qb3
>Nxf1 20. Kxf1 Rfd8 21. a4 c5 22. a5 b5 23. bxc5 dxc5 24. Qxb5 Ra6 25. Qxb7 Rdd6
>26. Qb8+ Nc8 27. Qxc8+ Rd8 28. Qxd8# 1-0
A 4 plies search on this kind of computer would take a really long time by
todays standards (more than one minute IIRC).
At level one I guess all it can do is 1 or 2 plies.
I also believe the Chess Challenger 7 and Chess Challenger 10 were using a
selective search, but it was prone to many kinds of errors.
But at that time they were great machines. I remember playing many games (I
still have the games scores somewhere here) circa 1980 against the Chess
Challenger 10 (it was not mine), and it has been with the Boris computers and
the Sargon II program on TRS-80 the begining of my passion for computer chess.
Christophe
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