### Consecutive Sudoku

In **Consecutive Sudoku** (*"1-away Disallowed Number Place"*), all the places where orthogonally adjacent cells are consecutive numbers have been specially marked.

In **Non-Consecutive Sudoku** no two adjacent cells have consecutive values. For example, if a cell contains 3, any neighbouring square cannot contain either 2 or 4.

The formats of sudoku files:

**CSD** - Consecutive Sudoku (9 x 9);
**CSD6** - Consecutive Sudoku (6 x 6);
**CSD8** - Consecutive Sudoku (8 x 8).