Unisu Sudoku – No Ads

Enjoy Sudoku without ads, at your own pace. Unisu brings together classic puzzles, hints that explain the logic, and interactive lessons to help you learn. Play offline and take time to find your next move. FIND YOUR CHALLENGE Explore 419 classic Sudoku puzzles across 16 levels, from beginner to expert. Earn level points, unlock new levels and return for the daily challenge. UNDERSTAND YOUR NEXT STEP Get up to three hints per puzzle. Each hint gradually reveals the relevant area, explains the reasoning and shows the next logical step. You stay in control and enter the numbers yourself. LEARN BY DOING Interactive lessons combine clear explanations, guided examples and hands-on practice. Start with the rules and pencil notes, then discover more advanced solving techniques. MAKE IT YOURS Use pencil notes, undo and optional error highlighting. Hide the timer, choose your colors and adjust text size and grid lines. Your puzzle progress saves automatically on your device. No account required. Puzzles and lessons are available offline; contact features and usage analytics use a network connection. Find your next logical step with Unisu.