This is a game. The user could guess a 4-digital number. The host
will set a 4-digital number and the user have to guess it. And then
the host will hint the user using ?A?B.
'A' means the number is the same and the location is also the same.
'B' means the number is the same and the location is not the same.
According to this hint the user could guess the correct number step by step and one by one.
'A' means the number is the same and the location is also the same.
'B' means the number is the same and the location is not the same.
According to this hint the user could guess the correct number step by step and one by one.