Futoshiki
Fill the grid with numbers following Latin square rules and inequality constraints. Each row and column must contain each number exactly once!
Latin Square Rules
Each row and column contains each number 1 to N exactly once, like a simplified Sudoku.
Inequality Constraints
Greater than (>) and less than (<) signs between cells guide your solution.
Multiple Difficulties
From easy 4×4 grids to challenging 9×9 puzzles with fewer constraints.
About Futoshiki
Futoshiki (不等式, meaning "inequality" in Japanese) is a logic puzzle that combines the Latin square constraint with inequality relationships. Created by Tamaki Seto in 2001, it has become popular worldwide under various names including "More or Less" and "Unequal".
The puzzle requires you to fill an N×N grid with digits 1 to N such that each number appears exactly once in every row and column. Additionally, inequality signs between some adjacent cells must be satisfied, adding an extra layer of logical deduction.