9
6
5
4
4
5
1
7
3
2
4
6
1
6
5
8
2
9
3
1
4
6
9
4
7
3
2
8
7
5
8
5
3
4
1
6
5
"The noblest pleasure is the joy of understanding." — Leonardo da Vinci
"The noblest pleasure is the joy of understanding." — Leonardo da Vinci
In 2013, researchers proved computationally that every valid 16-clue Sudoku puzzle has a non-unique solution — 17 is truly the minimum.
In 2013, researchers proved computationally that every valid 16-clue Sudoku puzzle has a non-unique solution — 17 is truly the minimum.