2
9
3
9
5
1
6
4
8
2
8
5
6
1
9
3
5
4
3
7
5
2
6
8
9
5
9
1
2
1
2
6
8
3
2
In competitive Sudoku, top solvers can complete an expert-level puzzle in under 3 minutes.
In competitive Sudoku, top solvers can complete an expert-level puzzle in under 3 minutes.
"By failing to prepare, you are preparing to fail." — Benjamin Franklin
"By failing to prepare, you are preparing to fail." — Benjamin Franklin