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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.

7612860 puzzles downloaded.

      8 9 14     15 7   1     13 16
              11   16 8   15     9
  16   6 12 15 13 8 5   9   10     1
      5           13 11 14        
14       15 2     7 1            
16 9     11 1 3       13     2 15  
8 13             2       1 4    
        14     13 3     8     5  
  14     16     6 1     5        
    4 2       1             12 8
  8 3     10       4 14 2     6 15
            9 15     16 10       2
        7 16 10           11      
13     1   9   2 8 14 12 4 7   16  
10     15   12 5   11              
12 7     13   1 14     5 9 2      
Showing puzzle number: 14956
Puzzletype: Symmetrical Sudoku
Startnumbers: 100
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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