Futoshiki Generator
Creates futoshiki puzzles: fill the grid so every row and column contains each number exactly once while respecting the < and > signs between neighboring cells. The generator adds inequality clues and given digits until a solver proves the solution unique, then strips redundant clues depending on difficulty. Solve on the page with checking and hints, print, or export PNG/SVG.
Runs 100% in your browser — your puzzles never leave your device.
Read the full guide to this tool
Notes
- Rules: complete the Latin square — no repeats in any row or column — and make every inequality sign point from the larger to the smaller number.
- Every puzzle is verified with a backtracking solver to have exactly one solution before it is shown.
- Difficulty controls clue pruning: easy keeps every helpful clue, hard removes each clue the solver can prove redundant, leaving a minimal set.
- Runs 100% in your browser — your words and puzzles never leave your device.
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