PlaySudoku.us
Hard · Puzzle #785
4
8
1
3
1
9
7
6
4
5
3
6
1
7
9
3
5
4
6
3
8
2
9
5
1
4
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.
"Curiosity is the engine of achievement." — Ken Robinson
"Curiosity is the engine of achievement." — Ken Robinson