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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.

  16 11 15               7        
  1 7 4     13 11   3         6 5
9       3             11   15   14
  10   6   8 12     16 13   7   2 11
    2   15   10   14           5  
4 9 16   2     3         10 8   7
            16 7 15 12   3 14   13  
    15     5     7 10 6   2      
      14   3 7 2     8     1    
  6   9 12   11 16 3 15            
11   5 1         2     12   7 10 3
  3           5   1   6   14    
13 12   16   2 9     14 5   15   7  
15   1   11             13       8
5 14         3   1 8     11 16 9  
        7               1 10 12  
Showing puzzle number: 23595
Puzzletype: Symmetrical Sudoku
Startnumbers: 104
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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