PlaySudoku.us
Medium · Puzzle #699
3
9
4
2
1
6
4
2
3
9
5
7
1
8
2
1
8
6
2
9
4
5
8
3
5
2
8
3
2
5
7
9
"Everything we call real is made of things that cannot be regarded as real." — Niels Bohr
"Everything we call real is made of things that cannot be regarded as real." — Niels Bohr
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.