Sudoku Notebook: Pen and Paper

Place the digits 1 to 9 exactly once in every row, column and 3×3 box.

• Four difficulty levels: Easy, Medium, Hard and Expert • Every puzzle is freshly generated and has exactly one solution • Notes mode: pencil in candidates; they clear themselves when you place the right digit • Undo, erase and hints • Highlights matching digits, plus the row, column and box • Remaining digit counts on the number pad • Best time for every level • Your game saves automatically, so you can pick up where you left off • Earn gold by solving puzzles and spend it on hints • Your gold balance syncs across your devices with iCloud • iPhone, iPad and Apple Watch, light and dark mode • No ads and no internet needed to play