1 person makes a code (4 colours) from a choice of 6 colours I think. then the opponent has to break the code 1st by guessing but after every guess, the 1st person has to tell them how many colours are correct (white) and how many pins are in the correct spot.(black).
example: code is the code i pick. then you start at 1 and add 4 colours in 4 holes and then on the right, i will put white and black pins depending on what you put. get it?
* * * * code
1 2 3 4 - 6_ _ _ _
1 2 3 4 - 5_ _ _ _
1 2 3 4 - 4_ _ _ _
1 2 3 4 - 3_ _ _ _
1 2 3 4 - 2_ _ _ _
1 2 3 4 - 1_ _ _ _
like this.