PlaySudoku.us
Expert · Puzzle #615
6
1
8
9
3
2
4
5
9
8
7
2
4
9
8
1
5
6
2
5
4
2
4
8
6
A valid Sudoku puzzle has exactly one solution. If it has two or more, it's considered broken.
A valid Sudoku puzzle has exactly one solution. If it has two or more, it's considered broken.
Sudoku became a global phenomenon in 2004 after The Times of London started publishing it daily.
Sudoku became a global phenomenon in 2004 after The Times of London started publishing it daily.