Sudoku Classic! for Windows

Free Sudoku for desktops and phones

Sudoku remains a favorite puzzle for players of all ages and backgrounds. Sudoku Classic offers a stripped-down, easy-to-use version of the game that runs on both computers and mobile devices — perfect for anyone who prefers a straightforward experience without extra distractions.

What makes the Classic edition appealing

• A clean interface that removes unnecessary extras so you can concentrate on solving.
• Multiple difficulty tiers, suitable for newcomers through seasoned solvers.
• Clear, legible cells and a simple layout that help reduce visual clutter.
• Emphasis on gameplay and time-management rather than decorative features.
• No purchase required — the app is available to download free of charge.

Helpful tools and gameplay aids

• An auto-complete option to finish the board when you’re stuck.
• Built-in hints that guide you toward better techniques as you play.
• A notes (pencil-mark) feature to keep track of possible numbers for each cell.
• Small utilities designed to speed up play while still encouraging skill development.