PlaySudoku.us
Medium · Puzzle #129
4
8
3
1
9
2
7
3
8
2
5
1
9
8
6
5
8
5
8
6
9
3
5
4
3
8
9
8
4
2
6
7
1
3
5
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.