Classic Sudoku

⭐ New

About game

Staring at a blank screen while your brain feels like mush is the ultimate afternoon slump. Classic Sudoku is the perfect mental palate cleanser to sharpen your focus during a quick break. You simply fill the 9x9 grid so that every row, column, and 3x3 square contains the numbers one through nine without any repeats. The logic behind this classic sudoku remains as satisfying today as it was in print puzzles. If you hit a tough spot, handy hint buttons and undo features keep the flow going without frustration. You can track your progress against the leaderboard to see how your logical speed stacks up against other players. Every session serves as a fantastic brain training exercise that clears the noise from your head. This digital version of the world famous game is available to play for free in your browser with no download required.

How to play

Game Objective

The goal of the game is to fill the 9×9 grid with numbers so that:

Each row contains no repeating digits.

Each column contains no repeating digits.

Each 3×3 subgrid contains no repeating digits.

Controls

For PC:
Enter numbers using the keyboard and move around the grid with the arrow keys.

For Smartphones:
Responsive touch controls with large, easy-to-use buttons.

Gameplay Features

To clear a cell, select it and press the “ERASE” button.

Press “UNDO” to revert your last move.

If you get stuck, press the “HINT” button. After watching a short ad, the game will place the correct number in one of the empty cells (either random or the one you selected).

Victory Conditions

The game is won when the entire grid is filled correctly, with no mistakes and no empty cells.
You will earn points based on the selected difficulty and the time taken. Your total score will be saved and submitted to the leaderboard.

Features

Difficulty levels: Choose from multiple settings that scale the challenge from beginner friendly to expert logic grids.
Smart tracking: The interface automatically highlights rows and columns to prevent accidental duplicate entries.
Score tracking: Earn points based on your speed and difficulty level to climb the global leaderboard.
Error management: Utilize the erase and undo buttons to experiment with number placements safely.
Flexible input: Switch seamlessly between keyboard shortcuts for rapid typing and touch gestures for mobile play.

Who is this game for

Logic puzzle enthusiasts and casual gamers seeking a quick mental workout. Office workers needing a short brain break, students looking to improve concentration, and anyone who enjoys classic tabletop challenges will find this browser-based experience perfectly suited for their daily routine on both desktops and mobile devices.