Last Digit

When there is only one instance of a digit missing in the grid, it can only go into a single cell. This is the Last Digit.

The Last Digit is a Hidden Single in all its houses. It is easily spotted with Cross-Hatching.

Sudoku Games

Free Sudoku Script for Your Website

Sudoku strategies

Printable Sudoku

Sudoku Links

sudoku cool sudoku schwer sudoku gratuit sudoku gratis 数独 数独 Судоку онлайн бесплатно 数独 今日数独 武士数独