PlaySudoku.us
Evil · Puzzle #511
6
4
5
8
6
3
7
9
1
2
3
7
6
6
9
7
5
3
6
9
6
2
8
8
4
2
Try to solve today's puzzle without erasing any pencil marks — plan every elimination before committing.
Try to solve today's puzzle without erasing any pencil marks — plan every elimination before committing.
The constraint propagation used in Sudoku solving is the same algorithm used in AI planning and automated theorem proving.
The constraint propagation used in Sudoku solving is the same algorithm used in AI planning and automated theorem proving.