PlaySudoku.us
Easy · Puzzle #639
7
6
3
2
1
9
4
2
1
6
3
1
5
9
4
7
8
8
3
7
9
1
2
2
9
6
1
5
8
4
7
1
8
2
5
6
3
6
2
1
5
8
5
3
7
3
6
2
4
8
In Japan, Sudoku is most popular among office workers and is often solved during commutes on trains.
In Japan, Sudoku is most popular among office workers and is often solved during commutes on trains.
The 4×4 mini-Sudoku is called 'Shidoku' and can be solved without any pencil marks — it's a common puzzle for children.
The 4×4 mini-Sudoku is called 'Shidoku' and can be solved without any pencil marks — it's a common puzzle for children.