🔼 Futoshiki
A Latin square with greater-than signs to obey. Logic, no guessing.
SIZE
TIME 0:00BEST —
How to play Futoshiki
- Pick a grid size and press Start. Grey numbers are fixed clues.
- Tap a cell to select it, then tap a number to place it, or press a number key.
- Each row and each column must contain every number from 1 to N exactly once.
- Obey every sign between cells: the open side faces the larger number. Fill the grid to win.
Controls
| Input | Action |
|---|---|
| Tap a cell | Select it |
| Tap a number / press 1-N | Place that number |
| Press 0 or Backspace | Clear the cell |
| Ctrl+F | Enter or leave full screen |
Tips & strategy
- Start where the signs chain up — a run of < signs pins the smallest and largest values fast.
- A cell forced above everything in its row must be the largest number, N.
- Use the usual Latin-square logic too: a number already in a row or column is out elsewhere.
- The open mouth of each sign always faces the bigger number.
Frequently asked questions
What is Futoshiki?
Futoshiki is a Latin-square puzzle: fill the grid so every row and column holds 1 to N once, while satisfying inequality signs placed between some cells.
Do I have to use the clues?
The grey given numbers are fixed anchors; build the rest around them and the signs.
How is my score tracked?
Your record is the fastest solve time, saved per grid size.