Sudoku Rax a windows program for creating and solving Sudoku number puzzles User Manual Download a trial copy of Sudoku Rax version 1.0 Buy a registered copy of Sudoku Rax version 1.0 Sudoko Rax is shareware. If you use the program more than for evaluation I expect you to pay for its use. The price is $ 7.95 and includes the right for free updates to newer program versions. Right: Screen shot 1 of the main window of Sudoku Rax In this example field 2 of the puzzle has been selected by the user. The "environment" (column, row, 3 x 3 region) of field 2 of the puzzle is highlighted to help entering a valid digit into the field. Field 24 (row 3, column 6) contains a already entered "try" (digit 3). Features of Sudoku Rax Enter and edit puzzles with the mouse and/ or keyboard, Display the puzzle in varying size (small to full screen), Generate random puzzles with different difficulty levels, Load and save puzzles from/ to disk, Print a puzzle on a Windows OS printer, Help for solving puzzles with hints in varying depth (showing legal digits, fields with only 1 or 2 legal digits, illegal fields, …) Undo/ Redo function for tried digits Accept/ clear "tried" digits Support for solving puzzles with "scratch digits" (markers for legal digits in a field) Statistic windows Help (general help file, status bar, tool tips, etc.) Right: Screen shot 2 of Sudoku Rax. The help feature "show digits which can be legally entered in a field" is toggled on. E.g. field 1 contains the little green digits 1, 6 ,7 and 9, which means 1,6,7 or 9 is left allowed to enter into field 1. The (independent) help feature "Mark fields with only 1 legal digit" is also turned on. The puzzle contains only 1 field (row 8, col. 2) of this kind and is framed green. Last modified 2008-01-10 (c) R. Posch