Deterministic logic puzzle generator

Numigma — Reverse Number Puzzle Lab

Assemble clue packs, set a deterministic seed, and let Numigma craft a uniquely solvable number deduction challenge. Tune the range, difficulty, and mathematical flavors to share endlessly replayable puzzles with friends or students.

Seed-driven & sharable
Guaranteed unique-solution search
11 mix-and-match clue packs

Generator controls

Configure the search space, deterministic seed, and difficulty profile. The difficulty level dynamically balances clue complexity, quantity, and solver strictness.

Range size: 0

Clue packs

Toggle mathematical themes to shape the flavor of the generated puzzle.

Active clues

0 clues
Generate a puzzle to see clue statements.

Candidate inspector

Run the generator to analyze candidate reductions after each clue.

Puzzle diagnostics

Awaiting generation

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.