PlaySudoku.us
Easy · Puzzle #851
5
4
8
9
2
6
7
3
6
2
5
3
1
8
7
4
1
1
3
2
6
2
3
5
4
8
6
1
7
9
3
9
4
8
1
3
5
3
9
4
2
8
4
7
1
9
In combinatorics, the pattern formed by Sudoku clue cells is studied as a problem in 'hitting sets' and transversals.
In combinatorics, the pattern formed by Sudoku clue cells is studied as a problem in 'hitting sets' and transversals.
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.