Mastermind board game

The game board is a perforated board with four rows of round holes arranged one behind the other to hold mushroom-shaped colour tiles and four smaller holes arranged parallel to each other in a square arrangement to hold needle-shaped pins.At the beginning, one player (the encoder) secretly determines a four-digit, ordered colour code, which is selected from four colours; each colour can also be used several times. The other player (the guesser) tries to find out the code. To complete this, he s