PlaySudoku.us
Easy · Puzzle #44
8
1
2
5
4
9
7
1
7
9
8
6
5
4
2
7
3
6
8
1
5
2
9
3
6
1
8
1
7
5
2
3
7
2
9
5
9
3
1
4
7
6
4
1
7
6
8
3
6
3
4
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.
"Real knowledge is to know the extent of one's ignorance." — Confucius
"Real knowledge is to know the extent of one's ignorance." — Confucius