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Sudoku puzzles 4x4 (Su Doku)

My database includes 34183 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every 4x4 box contains the digits 1 through 16. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

1       12   2 4   6       9    
  8       3   6 4   13 5     15 16
2   4     7             5     11
      3               1 4 12   13
  7 3 6 2 16 1     12            
12   16   4   15   11     10        
  1 5     12 10           16 15    
15 11       14   5     2 8       1
11       8 15     2   10       1 9
    15 14           5 12     7 4  
        6     14   15   3   11   12
            13     14 16 6 8 3 10  
7   6 16 3               9      
8     2             3     6   5
9 14     7 13   10 6   4       12  
    13       4   5 1   12       2
Showing puzzle number: 326
Puzzletype: Symmetrical Sudoku
Startnumbers: 100
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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