How to Play:The secret code is made up of four keys,each
a different colour. Your quest is to break the
the code by a series of guesses, checking the
score after each guess.
Hint: For simplicity, no colour is used more
than once in the code. Remember that scores
in two separate guesses may refer to different
key colours in the hidden code!
Scoring:The accuracy of your guess is shown
by the colours in the small boxes.
shows a key choice which is a correct colour but in the wrong position
shows a choice which is right key choice and in the right position
Invented by Mordecai Meirowitz in 1970-71,thepuzzle appeared at the International Toy Fair inNuremberg in February 1971. A toy manufacturer,Invicta, obtained marketing rights for the game,'Mastermind'. It's now a success all over the world.
Sadly, details of his original puzzle are lost !