Math
Numbun
A daily number deduction puzzle inspired by Bulls and Cows / Mastermind. Guess a secret 4-digit number using only + and - clues.
Each date on DLE Directory highlights one daily puzzle worth trying. For Tuesday, December 15, 2026, we are introducing Numbun — a math DLE that usually takes 3–10 min.
A daily number deduction puzzle inspired by Bulls and Cows / Mastermind. Guess a secret 4-digit number using only + and - clues.
