Futoshiki Online

About Futoshiki Online

Fill an NxN grid with digits 1..N so every row and column contains each number exactly once, and every inequality sign between adjacent cells points the correct way. 30 handcrafted logic puzzle levels across 5 tiers from Beginner (4x4) to Master (7x7).

Description provided by GameZipper.

How to play

1. Study the NxN grid. Some cells start filled with a digit (a clue). Between some adjacent cells you will see an inequality sign: < or >.
2. Tap any empty cell to select it, then tap a number from the number pad to place it. Tap the same number again (or the eraser) to clear.
3. An arrow like 3 > 2 means the digit on the open side must be larger. Every inequality sign must be satisfied by your digits.
4. Each row and each column must contain every digit 1..N exactly once with no repeats.
5. Fill every cell correctly. Fewer hints and faster times earn more stars.

Controls

This game supports touch, keyboard, mouse input; the exact controls are explained inside the game.

Questions

How do you play Futoshiki?

Futoshiki is played on a square grid. Fill every cell with a digit so that each row and each column contains every digit exactly once (like Sudoku but without 3x3 boxes). Some adjacent cells are joined by inequality signs (< or >) that the digits must satisfy. Use logic to deduce each number.

What is the goal of Futoshiki?

The goal is to complete the grid so that (1) every row has all distinct numbers, (2) every column has all distinct numbers, and (3) every inequality sign between two cells is satisfied. The puzzle has exactly one solution, so pure logic is enough.

Is Futoshiki the same as Greater-Than Sudoku?

No. Greater-Than Sudoku adds inequality signs on top of the Sudoku 3x3 box rules. Futoshiki has no boxes at all — only row and column uniqueness (a Latin square) plus the inequality signs. This makes Futoshiki its own distinct puzzle type.