SUDOKUMANIA - DONAZIONI

If you use Sudokumania for funny and you think that author made a good work, you may encourage the sw freeware development and make a donation (free amount).

Otherwise, if you want to use it for commercial purpose (publishing sudoku schemas on books, newspapers, web-sites or in any other way), you have to make a donation of no less than 20 US dollars (see also instructions in the program).