Files
website/content/software/deduce-also-known-as-deduce-sa.md
T
yann64andClaude Opus 5.5 de19014649 Content with the complete media download (15,344 files)
228 files were never archived; see docs/not-recovered.md in the extraction repo.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
2026-10-13 16:47:19 +02:00

2.6 KiB

title, tags, years, params
title tags years params
Deduce also known as Deduce-SA
mind games
1971
image specs screenshots machines company oc_id source
/media/museum/software/rca%20deduce.png
label value
year of release 1971
label value
companies RCA
label value
type game
label value
media tape
label value
systems RCA Fred computers
label value
number of players 1 player
label value
staff Joseph Weisbecker (Programmer)
title subtitle text image
you have 15 turns to guess the 4 digits chosen by the computer /media/museum/software/rca%20deduce.png
title subtitle text image
1 digit is in the right position and 3 are misplaced /media/museum/software/rca%20deduce.1.png
title subtitle text image
again, 1 digit is in the right position and 3 are misplaced /media/museum/software/rca%20deduce.2.png
title subtitle text image
Not turn left and the player has not guessed the four digits. Its a lost game. /media/museum/software/rca%20deduce.3.png
title subtitle text image
Original note from the Fred documentation /media/museum/software/rca_fred2_deducegame_note.jpg
/museum/rca-fred
/companies/rca 850
url date
https://web.archive.org/web/20230207050352/http://www.old-computers.com/museum/software_detail.asp?id=850 2023-02-07

This is one of the first games available for the Fred project, as the first version was programmed by Jospeh Weisbecker on the 7th december 1971.

The first "Deduce" is not really a game but rather a demonstration of "artificial intelligence" of the computer. It works like this: the computer deduces which one of 8 front panel lights the player has chosen, simply by asking three questions. These questions are in fact a serie of 4 front panel lights lit, and the player must tell the computer if his chosen light is among the ones lit.

There is no screen display involved in this version. Everything is happening on the front panel lights of the Fred computer.

Sometimes later, surely after 1972 (as the famous board game Mastermind was released in 1971/1972), a second version was programmed for the Fred systems. This time it plays more like a Mastermind game where the player must guess 4 digits chosen by the computer within 15 rounds.

Each time the player enter a serie of 4 digits, the computer will tell how many digits are are their right position, and how many digits are valid but misplaced.

At the end of the 15 turns, if the player didn't succeed in finding the right 4 digits code, the computer will display LOSE.