PlaySudoku.us
Hard · Puzzle #221
8
6
4
7
5
3
7
2
1
4
2
1
5
5
3
7
8
5
8
2
7
6
3
2
5
6
1
In 2005, Sudoku mania was so intense in the UK that it was credited with boosting pencil sales nationwide.
In 2005, Sudoku mania was so intense in the UK that it was credited with boosting pencil sales nationwide.
In 2005, Sudoku mania was so intense in the UK that it was credited with boosting pencil sales nationwide.
In 2005, Sudoku mania was so intense in the UK that it was credited with boosting pencil sales nationwide.