Try and guess the order and color of 4 spheres chosen by the computer. You have 10 guesses to correctly identify the computer's combination. Upon checking your guess, a small white peg indicates a correctly colored sphere placed in the wrong location. A small black peg indicates a correctly colored sphere in the correct location.

Drag a colored sphere from a box of your choice onto the location you wish to place it. Lock in your choices when you're satisfied, and see if you guessed correctly.