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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.

7646280 puzzles downloaded.

7     13 3   11   9     10 2   6  
5               12 14 6       4  
          2     11     3 10     7
  9     1     8   13   5     12 11
        9 1         16     5    
  6 16   10 11   2 13             12
10 14   3                   8   2
    1   13 15 5   7 2   14 3 11    
    4 2 15   10 13   3 14 6   9    
9   11                   16   2 4
14             7 10   11 4   6 1  
    6     3         2 9        
3 1     4   2   6     16     11  
4     11 6     14     1          
  5       8 3 12               16
  15   14 16     10   12   11 8     6
Showing puzzle number: 22999
Puzzletype: Symmetrical Sudoku
Startnumbers: 100
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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