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SudokuSudoku is a very popular Japanese number puzzle. A classic board is a 9x9 grid, which is subdivided into 9 3x3 grids. Each row, column and grid must contain each of the digits from 1 to 9 exactly once. You can read more on the Sudoku Wikipedia entry.
Please choose a puzzle to solve from the list below.
Your times will not be recorded because you are not logged in. 
1
2
3
4
5
6
7
8
9
10
11-20
21-30
31-40
41-50
51-60
61-70
71-80
81-90
91-100
101-110
111-120
121-130
131-136
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