PlaySudoku.us
Evil · Puzzle #986
9
6
1
2
9
7
5
7
9
3
2
4
8
5
6
4
4
3
1
5
7
8
6
4
1
Techniques used
- Naked Single
- Hidden Single
- Naked Pair
- Pointing Pair
- Box-Line Reduction
- W-Wing
- 2-String Kite
- Finned X-Wing
- XY-Chain
- Naked Triple
- XY-Wing
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.
"In chess, as in life, a man is his own most dangerous opponent." — Vasily Smyslov
"In chess, as in life, a man is his own most dangerous opponent." — Vasily Smyslov