A Sudoku is a puzzle involving a 9x9 grid into which the ... You can use this to fill in any missing squares that you can't ...

you fill the grid’s diagonals with numbers from one to nine with no repetition. Irregular sudoku features unusual shapes and jigsaw puzzle-like connections. Killer sudoku incorporates dotted ...

Sudoku is a logic-based number puzzle played on a 9x9 grid. The objective is to fill in the grid so that each row, column, ...