Vache

A variant of master mind using digits. Vache tells you for each try how many digits are at the right position (black) and how many are in the code but not at the right place (white). With some logic you can find out the code within 7 tries. Rules: smallest number is 1023. No digit repetition.

Now you can set the background color. In the statistics you can see which background color brought you the most points. In this way you can determine your lucky color.

Other names for this game are: bulls and cows, crack the code, mastermind.