Find the secret number
Generate a number puzzle, read the clues, and work out the hidden answer. Start with the default settings, then change the range or clue packs for a different challenge.
Try this: a number between 1 and 20 is even, greater than 10, and a multiple of 7. The answer is 14. Generate a puzzle to try more clues, then use Reveal to check your answer.
Customize range, difficulty, and clue packs
Generator controls
Configure the search space, deterministic seed, and difficulty profile. The difficulty level dynamically balances clue complexity, quantity, and solver strictness.
Clue packs
Toggle mathematical themes to shape the flavor of the generated puzzle.
Active clues
Candidate inspector
Run the generator to analyze candidate reductions after each clue.
Puzzle diagnostics
The diagnostics panel summarizes solver progress, including whether a unique solution was found for the chosen configuration.
Solution reveal
The secret number remains hidden until you generate a puzzle.