Master Blind (Mastermind for blind people)

for 3D-Printed Games Layer by Layer

Paul Cobbaut

Complete Game Free

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Designer's Description

Master Blind

Board game for blind and visually impaired people.

This 3D-print is based on the pencil and paper game called ‘Bulls and Cows’ which appeared as MOO on computers around 1960 and was made popular since 1972 as ‘Master Mind’.

It features different shapes as ‘colours’. The rules are still the same.

Code pegs

There are seven different code pegs (Bulls and Cows had up to ten, Master Mind Deluxe had nine, otherwise seven).

I advice printing at least 20 of each for a single board.

Key Pegs

The sole keypeg has a rounded and a flat side. This can be used to distinguish cows from bulls (Master Mind from Invicta Plastics uses white and black key pegs).

I advice printing 50 for a single board.

Code cover

The cover is high enough so you can feel what is underneath.

Braille

The Braille on the board says ‘master blind’.

You need a good 3D-printer (MK4) and dry filament to properly print Braille. Verify that it is not too sharp before handing it out. Soften it with a Dremel for example.

Rules

This is a game for two players. The first player creates a secret code, a combination of four or five coloured pegs and hides them under the cover.

The second player tries to guess the code in as few steps as possible. Each step will get a ‘score’ using the keypegs to denote correctly placed pegs, and correctly coloured but misplaced pegs.

Using a five peg code is harder than using four pegs. The more colours in use, the harder the guesswork. You may allow or forbid using the same colour more than once in the code. Adding possible empty spaces to the code makes it even harder.