Choose Difficulty

Play free classic Sudoku online with easy, medium, hard, expert, and master puzzles. No download or sign-up required. Works smoothly on desktop, tablet, and phone.

Easy

Warm up your mind

About 40 given cells — great for beginners.

Medium

The perfect balance

About 32 given cells — steady logical flow.

Hard

Focus and patience

About 26 given cells — sharper deduction.

Expert

Master your technique

About 22 given cells — advanced solving patterns.

Master

Peak challenge mode

Minimal givens for deep, uninterrupted focus.

How to Play Sudoku Choose another difficulty