Futoshiki
A Latin square with greater-than signs between the cells.
📖 Futoshiki Guide: History, Rules & Free 50-Level PDF Booklet →
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How to play
- Fill the grid so every row and every column holds each number from 1 up to the grid's size exactly once.
- A sign between two cells points at the smaller number: in 2 < 4 the 2 is on the narrow side, and so is the smaller number above ∧ or below ∨.
- Given numbers stay as they are.
Each Number Once
Every row and every column holds each number from 1 up to the grid's size exactly once.
Signs Point at the Smaller Number
The narrow end of a sign points at the smaller of its two numbers: 1 < 2 across, and down a column ∧ has the smaller number above, ∨ below.
📖 Read full history, math concepts & download printable booklet →
Futoshiki
How to play Futoshiki
- Fill the grid so every row and every column holds each number from 1 up to the grid's size exactly once.
- A sign between two cells points at the smaller number: in 2 < 4 the 2 is on the narrow side, and so is the smaller number above ∧ or below ∨.
- Given numbers stay as they are.
Each Number Once
Every row and every column holds each number from 1 up to the grid's size exactly once.
Signs Point at the Smaller Number
The narrow end of a sign points at the smaller of its two numbers: 1 < 2 across, and down a column ∧ has the smaller number above, ∨ below.
There is exactly one solution. Check marks anything that breaks a rule. Sign in to get 3 hints per puzzle: each fills in one correct move. Your moves are saved in this browser, so you can leave and come back.