PlaySudoku.us
Hard · Puzzle #472
9
6
4
2
8
2
4
1
6
5
4
2
4
7
8
5
1
7
3
8
7
6
4
9
2
2
3
8
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.
"Do what you can, with what you have, where you are." — Theodore Roosevelt
"Do what you can, with what you have, where you are." — Theodore Roosevelt