.SDK file extension

This is the basic program to work with .SDK extension

Sudoku Deluxe

Sudoku Deluxe Masc Sudoku Puzzle

The program works with the following extensions: sdk

.SDK extension is also supported by the following programs:

Sudoku Dragon

Sudoku Dragon Sudoku Puzzle File

You can use this program to generate brand new puzzles to solve.

SudoCue Sudoku puzzle

SudoCue is one of the most powerful sudoku solvers currently available.