PlaySudoku.us
Medium · Puzzle #917
1
9
3
8
6
1
5
7
7
8
6
9
2
3
1
7
4
5
9
3
1
3
9
7
9
7
6
5
8
1
4
7
1
3
6
6
2
The first Sudoku software app appeared in 2005 and became one of the most-downloaded mobile apps of that year.
The first Sudoku software app appeared in 2005 and became one of the most-downloaded mobile apps of that year.
"If I have seen further, it is by standing on the shoulders of giants." — Isaac Newton
"If I have seen further, it is by standing on the shoulders of giants." — Isaac Newton