Mastermind is a logic game for everyone. To beat the game, you have to guess a code, that the other player (here the computer) has chosen. In this variant the code is made from digits (0-9).
After each guess from your side, the computer tells you how many of the digets you got right and on the right place in the code. Additionally the computer tells you how many digets you got right, but on the wrong place in the code. Based on this feedback you have to guess the code in 10 tries.
Have fun! If breaking the code is too easy for you, have a look into the readme file 😉