PlaySudoku.us
Medium · Puzzle #159
3
7
5
4
1
5
9
8
4
3
9
7
1
2
8
5
9
2
5
3
7
6
4
9
7
1
8
9
1
3
4
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 two hardest tests on the spiritual road are the patience to wait for the right moment and the courage not to be disappointed with what we encounter." — Paulo Coelho
"The two hardest tests on the spiritual road are the patience to wait for the right moment and the courage not to be disappointed with what we encounter." — Paulo Coelho