Sudoku from easy to expert, with pencil notes, highlighting of repeated digits, undo and a timer. Every puzzle has exactly one solution.
玩法
- 1Fill the grid so every row, column and 3×3 box contains the digits 1 to 9 once.
- 2Select a cell, then tap a number on the pad or type it.
- 3Turn on Notes to write small candidate digits in a cell instead.
- 4A digit that repeats in its row, column or box is shown in red.
操作方式
技巧
- Placing a digit removes that digit from the notes in the same row, column and box.
- The small number under each pad button shows how many of that digit are still to place.
- Selecting a filled cell highlights every cell with the same digit.