Mastermind

Mastermind is a code-breaking game, and in this version of game, the code is a number or set of icons and challenge is guess a 4 ~ 8 digit code depending on the chosen level.

After pressing check button, you can see which digit is correct and which one is wrong by its color, red means the number has not that digit, and yellow means the number has that digit but its place is not correct, and green means right digit in right place.

If all digits get green then you have the answer.

You have unlimited chances to find out the code, but the challenge is to find the code with minimum try in minimum time.