Good Old Sudoku 

The most popular logic puzzle in Japan. The rules are simple. Each row, column and minibox comprises the numbers 1 through 9. The solver must complete the missing numbers. Sudoku is recommended by some teachers as an exercise in logical reasoning.
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Sudoku Assistant 

Sudoku Assistant provides you with a computerized Sudoku board that frees you from the mundane task of tracking which candidates are possible in each box and enables you to concentrate on the logic of the solution.
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Sudoku Printer 

Sudoku Assistant provides you with a computerized Sudoku board that frees you from the mundane Sudoku Printer generates and prints booklets of sudoku puzzles.
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