The classic code-breaking game

I'm thinking of a 4-digit number with no repeated digits.
Each guess, you'll get:
๐Ÿ‚ Bulls โ€” right digit, right position.
๐Ÿ„ Cows โ€” right digit, wrong position.
Crack the code in 10 tries or less!
Your guess 0 / 10
Guesses
No guesses yet โ€” make your first move!