Freeware from Sudoku9981.com downloads
1000 Extreme Sudoku 1.0
1000 very hard printable sudoku puzzles,Extreme soduku puzzles need some advanced soduku strategies,Such as Uniqueness, Single Digit Patterns,Fish
1000 Expert Sudoku 1.0
1000 expert printable sudoku puzzles,Expert soduku puzzles need some advanced soduku strategies,Such as X-Wing,Squirmbag,Fishy Cycle| X-Cycle,XY-Chain.
1000 Hard Sudoku 1.0
1000 hard printable sudoku puzzles,Hard soduku puzzles need some advanced soduku strategies,Such as Color Wrap,Hidden Single ,Pinned Digit .
1000 Easy Sudoku 1.0
1000 hard printable sudoku puzzles,Hard soduku puzzles need some advanced soduku strategies,Such as Color Wrap,Hidden Single ,Pinned Digit .Easy puzzles are great for getting started in sudoku, or as a warm-up for tougher stuff.These puzzles can all be solved using crosshatching and single-candidate elimination.