Software Author - Sudoku9981.com

1000 Hard Sudoku 1.0

1000 Hard Sudoku is Freeware program for Windows developed by Sudoku9981.com

1000 solid printable sudoku puzzles, Hard soduku puzzles need some advanced soduku strategies, Such as Color Wrap, Hidden Single, Pinned Digit .

1000 Expert Sudoku 1.0

1000 Expert Sudoku is Freeware program for Windows developed by Sudoku9981.com

1000 scholar printable sudoku puzzles, Expert soduku puzzles need some advanced soduku strategies, Such as X-Wing, Squirmbag, Fishy Cycle| X-Cycle, XY-Chain.

1000 Extreme Sudoku 1.0

1000 Extreme Sudoku is Freeware program for Windows developed by Sudoku9981.com

1000 truly hard printable sudoku puzzles, Extreme soduku puzzles need some advanced soduku strategies, Such as Uniqueness, Single Digit Patterns, Fish