Sudoku 9981 for Windows

You can create, play, print, and solve Sudoku puzzles. You can also open many more grids from the Internet. The program will help you out when you get stuck as some of the features included are: automatically generate possible number notes; solve puzzle; highlight where you went wrong; Comprise function of displaying singles candidature, branch function, and color panel function.

Version 4.68 is a bug fixing release.