Sudoku Coach

Sudoku Coach is an Android Sudoku game with classic 9×9 puzzles, explained logic hints, and separate practice. Solve at your own pace and see why the next step works.

• 92 included Sudoku puzzles: 30 basic, 30 intersections, 30 subsets and 2 X-Wing introduction puzzles.
• Lessons for 10 logic techniques and 10 interactive worked examples. Select the pattern cells and mark the conclusion.
• 70 separate practice examples that check the reasoning and conclusion. Another valid pattern of the same technique is accepted.
• Step-by-step Sudoku hints, manual pencil notes, undo and redo, a daily puzzle, and entry of your own 81-cell puzzle.
• English and Estonian, light and dark themes, and local game and learning history.
• Export or import a JSON backup yourself.

Techniques range from singles and pairs to X-Wing. Placing a correct Sudoku digit in a game does not automatically count as learning a technique; a separate exercise checks that reasoning.

Sudoku Coach is a paid app. Every game, hint and learning feature is included with one Google Play purchase. There are no ads, in-app purchases or subscriptions. Google Play shows your local price before purchase.

Sudoku solving, lessons and practice run on the device without a connection. Google Play's installer check may still need a connection after the device's Play Store has been offline for a prolonged period.