Mirrored from Sudopedia, the Free Sudoku Reference Guide
YasSS, short for Yet Another (Simple|Stupid) Sudoku Solver is a fast, open source Sudoku Solver and Generator.
It implements a view simple solving techniques plus backtracking.
As a special feature it can transform Sudokus to a canonical form, thus making it possible to compare Sudokus without being fooled by simple transformations (like exchanging rows and columns).