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Sudoku puzzles (Su Doku)

My database includes 10934 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every 3x4 box contains the digits 1 through 12. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

2333808 puzzles downloaded.

    9         1 3     5
4   10 1     7 3   12    
7 12               11   4
2       8   1       5  
12     8 3   5     9   7
11           4 7        
        5 7           1
9   4     2   8 7     10
  2       3   4       8
8   12               2 11
    2   10 5     1 7   6
1     7 4         8    
Showing puzzle number: 2554
Puzzletype: Symmetrical Sudoku
Startnumbers: 54
Difficulty: Very easy (0)
Solution methods: SiSo SC
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