What are the rules of Sudoku?

Fill the 9×9 grid so every row, every column and each of the nine 3×3 boxes contains the digits 1 to 9 exactly once. Every puzzle has one unique solution reachable by logic alone — no guessing required.

How do you solve a Sudoku for beginners?

Scan for rows, columns or boxes that already hold most digits and fill the forced cell. Then use pencil marks: note every candidate for a cell, and when only one candidate remains, it's confirmed. Start with the digit that appears most often on the board.

Is Sudoku good for your brain?

Sudoku is a logic workout that exercises pattern recognition, working memory and concentration. It needs no math — only reasoning about where each digit can go.

Sudoku

Fill the grid so every row, column and box has 1–9.

Tips & Tricks

Tap an empty cell, then tap a number to place it.

Every row, column and 3×3 box must contain 1–9 with no repeats.

Use notes to pencil in candidates when you're unsure.

Start with rows or boxes that are nearly complete.

Fill the whole grid correctly — faster times rank higher.

Sudoku

⭐Tips & Tricks

Tips & Tricks