### Sudoku

### X-Sudoku

### Jigsaw Sudoku

### Jigsaw X Sudoku

### Mini Sudoku

**Newdoku**

### Try 2048

### Books

Please use logical thinking instead of guessing! Each puzzle only has one solution.

Jigsaw Sudoku is also referred to puzzle Sudoku. It is another type of standard Sudoku. Different from standard Sudoku, jigsaw Sudoku uses irregular gridding groups to replace traditional 3x3 grids.

Jigsaw Sudoku puzzles on Sudoku.cool have seven sizes of “3x3,4x4,5x5,6x6,7x7,8x8,9x9” with ten difficulty levels. By pressing "New Puzzle...", you can choose game size and difficulty level.

The solving process for Jigsaw Sudoku is to fill numbers from 1-N in NxN grids.Numbers cannot be repetitive in each row, each column, each group (N grids in rough-line boxes).

- Number 1-N can only appear once in each column.
- Number 1-N can only appear once in each row.
- Number 1-N can only appear once in each group.

Jigsaw Sudoku can also add rules of having two diagonal lines. The new games can be referred to Jigsaw Diagonal Sudoku or Jigsaw X Sudoku .