Garden Sudoku

Fill each row, column and 3×3 box with the digits 1 through 9 exactly once. Work through 20 puzzles using pencil notes, undo and hints when needed.

目标

Place digits 1 through 9 once in each row, column and 3×3 box.

操作

Select a square, then press a number button.

特色

Use pencil notes, undo and hints while solving.