Play Free Sudoku Online
Choose from multiple sudoku game modes and difficulty levels. Play free sudoku puzzles online with our advanced web sudoku platform designed for brain training and logical thinking.
Classic
The original Sudoku experience. Fill the 9×9 grid so each row, column, and 3×3 box contains digits 1-9.
Killer
Combine addition with Sudoku logic. Caged areas must sum to specific totals while following Sudoku rules.
Diagonal
Classic Sudoku plus diagonal constraints. Both main diagonals must also contain digits 1-9.
Hyper
Four additional 3×3 boxes overlay the standard grid, each must contain digits 1-9.
Jigsaw
Irregular shaped regions replace the standard 3×3 boxes. Each region must contain digits 1-9.
Multiple Difficulties
5 difficulty levels from beginner-friendly Easy to mind-bending Evil challenges.
Smart Hints System
Get intelligent hints with logical explanations to improve your solving techniques.
Advanced Features
Draft mode, undo/redo, auto-save, and error checking for the best playing experience.
New to Sudoku?
Start with Classic Easy mode to learn the basics, then gradually work your way up to more challenging puzzles. Our hint system will guide you through the logical solving techniques.
Start with Easy Mode