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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.

7494506 puzzles downloaded.

16 5 9             4   6   1   14
  2 14 1     4   8   12 10        
13   12 11 5 10   1             8  
                        16 2   9
10         2     1   13 15   12 6  
  14   5 11   8 10       7 13   9  
    16 6 1   15         8 11 3   10
        3     7   12 14         15
5         9 3   16     1        
14   15 9 7         3   2 1 10    
  3   16 15       14 11   12 7   5  
  10 11   6 1   13     5         2
9   6 8                        
  15             12   2 16 6 7   5
        12 7   6   8     2 15 10  
12   10   16   13             9 4 3
Showing puzzle number: 28800
Puzzletype: Symmetrical Sudoku
Startnumbers: 104
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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