PlaySudoku.us
Medium · Puzzle #572
8
6
1
4
3
7
8
1
6
3
9
8
8
9
2
5
2
7
6
8
5
4
6
3
2
2
6
1
5
2
6
8
5
3
8
Sudoku can be expressed as an integer linear program — a branch of optimization mathematics used in logistics and finance.
Sudoku can be expressed as an integer linear program — a branch of optimization mathematics used in logistics and finance.
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.