It's a mathematical (number) puzzle. Here you will be given a Lock which is locked with a three digits code. You have to unlock it by guessing the 3 digits code. You have to set your guess code on the lock by sliding the corresponding numbers of a 3 digit code.

You have three different levels from Simple to Difficult. Each level may give you different number of hints to guess the answer to unlock.

The hint contains 2 parts: a code and a message. The code is a 3 digit number which may contain zero/few/all digits from lock code. The hint message contains text about the hint code and informs you how close is the hint code to the lock code.

More information will be given during the puzzle.