Guess the number game (Bulls & Cows)
An ancient password deciphering puzzle game that originated in the United Kingdom in the mid-20th century
game rules
Guess a number and compare it to a random number, If part of the guess correct,
The same position as the random number is "A", guessing that the two are " 2 A "
The wrong position is "B". If you guess two, it is "2 B".
All guessed wrong
"0 A 0 B"