Hi Maurice,
thanks a lot for these photos.
However, I am sure there are at least 49 Amateur packs and 49 Professional packs.
I hope I will have (in a few weeks) tangible proofs for that
![Wink ;-)](./images/smilies/icon_e_wink.gif)
I will post a photo then.
However, it seems there may be even more than 49 packs (per category).
Why?
1. To the best of my knowledge, cardboard/paper version of Cyberchess was in sales for around 6 years, which means sales was probably terminated in 1983.
According to the document that you posted, 45 packs per category were available as of December 1981.
During 1982 and 1983 there should be more packs issued.
As you now, there was a "Cyberclub" whose members (subscribers) were receiving all new packs automatically by mail at discounted price.
2. Some time ago there was a listing on eBay of Cyberchess.
Although the pictures were showing only the main unit with one or two packs,
the description was very interesting (probably copied from promotional materials).
I saved that listing and here is the description:
"Play Chess anytime, anywhere with your own private chess partner.
Improve your game with your own private chess master showing you how.
Simply insert the supplied program cards and you are ready to play chess.
Choose the level of play, weak and easy or very tough. There are 8 levels to choose from.
You decide when and where to play, when to adjourn and resume a game,
How long to ponder on any given move.
Cyberchess comes with 75 Amateur (lower rated) game packs and 74 professional (higher rated) game packs.
Each game pack contains a total of 4 chess games and (occasionally) endgames.
There are a total of 596 games/endgames. Each game is selected from master and grandmaster play."
The bad news is that in 1982 / 1983 Cyber Chess was probably in decline (losing market share to dedicated units and chess software for microcomputers), which means the production runs of packs number 50 and above was probably low.
kind regards,
Jarek