PlaySudoku.us
Medium · Puzzle #326
4
9
3
7
9
2
1
1
8
6
4
5
2
9
1
7
4
5
7
2
8
3
8
9
2
2
4
9
8
3
4
5
The minimum number of clues (17) needed for a unique Sudoku was proved by exhaustive computer search in 2012.
The minimum number of clues (17) needed for a unique Sudoku was proved by exhaustive computer search in 2012.
"We shape our buildings; thereafter they shape us." — Winston Churchill
"We shape our buildings; thereafter they shape us." — Winston Churchill