Le Sudoku solver
Here is a quick (world fastest during a few weeks) Sudoku solver. It solve all Sudoku problems (including empty board).

Enter known numbers separated by spaces or zeros, then press return key.
9*9 Sudoku (1..9)
16*16 Sudoku (1..9 + abcdefg)
About Sudoku : 1, 2

By askywhale, 2004-2005