PlaySudoku.us
Expert · Puzzle #967
5
9
7
6
1
6
5
6
4
3
2
9
4
7
3
5
9
4
1
6
9
8
3
"What one man calls God, another calls the laws of physics." — Nikola Tesla
"What one man calls God, another calls the laws of physics." — Nikola Tesla
Set theory provides the formal foundation for Sudoku's rules: each digit must appear exactly once per set.
Set theory provides the formal foundation for Sudoku's rules: each digit must appear exactly once per set.