PlaySudoku.us
Hard · Puzzle #110
3
1
2
8
6
1
4
9
3
9
8
4
5
7
6
4
7
5
7
1
3
2
4
5
1
9
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