PlaySudoku.us
Hard · Puzzle #15
6
2
9
5
9
8
7
8
6
7
1
9
3
8
4
1
5
8
2
2
1
6
6
4
5
9
"A man who dares to waste one hour of time has not discovered the value of life." — Charles Darwin
"A man who dares to waste one hour of time has not discovered the value of life." — Charles Darwin
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.