PlaySudoku.us
Evil · Puzzle #840
8
5
9
6
2
8
4
3
7
9
1
3
8
6
2
9
3
4
4
9
5
1
3
The hardest published Sudoku puzzle — graded by the number of search nodes a computer needs — was named 'Al Escargot' by its creator.
The hardest published Sudoku puzzle — graded by the number of search nodes a computer needs — was named 'Al Escargot' by its creator.
"The secret of getting ahead is getting started." — Mark Twain
"The secret of getting ahead is getting started." — Mark Twain