PlaySudoku.us
Medium · Puzzle #76
3
8
9
5
4
7
6
8
1
1
7
9
6
3
6
9
7
4
2
3
2
4
1
6
9
6
3
8
2
1
9
4
3
1
2
"The pin is mightier than the sword." — Fred Reinfeld
"The pin is mightier than the sword." — Fred Reinfeld
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.