Guess Number (Bulls and Cows) - BluetoothHow to play:1. Input a random numbers but not duplicated2. You will get a hint by ?A?B, A means right position and right number, B means wrong position but right number.For example: input 1234, you got 1A1B ,It means you got 2 numbers, but one is in right position, the other isnt.Function:1. 3 - 10 digits length selectable2. 3 reminder mode3. Rounds limit4. You can save the game data !5. Support the Bluetooth battle !!