Sudoku Online New Sudoku Easy Medium Hard 1 2 3 4 5 6 7 8 9 Notes ⌫ Show mistakes Auto-hide notes Highlight same numbers Fill the board with notes Delete all notes Reset the sudoku Print 1 … 9 - Set cell value ⇧ Shift + 1 … 9 - Add note ⇪ Caps Lock - Toggle values/notes ← ↑ ↓ → - Move cursor ⌫ ⌦ - Clear cell