🐮Bulls & Cows
The classic 1A2B deduction game — crack the hidden 4-digit code
Guesses
0
Fewest moves
–
Type 4 unique digits to start deducing
Guess the hidden 4-digit number using A/B hints! · Type digits or use the keypad, Enter to submit. A = right digit right place, B = right digit wrong place.
How to Use
Each round, guess 4 unique digits. The reply xAyB tells you how many digits are exact (A) and how many are right but misplaced (B). Narrow it down logically.
FAQ
Can the answer repeat digits?
No — both the secret and your guesses use four distinct digits.
How few guesses?
Sharp deduction usually cracks it in 5–7 rounds.