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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.

7560860 puzzles downloaded.

    5         14   13 16         10
  15     10   8   3     11 7   13  
    13   16 5     10 15   2        
    10   13 15     6              
2   15     12   4             1  
  7 12     2 16 13 8       14   10 9
  8   1 6 11       14   12 16 15    
  16   14 9   7         3     2  
  12     4         2   6 13   9  
    9 10 15   5       13 1 12   3  
4 2   6       1 11 16 3     5 7  
  5             7   14     11   6
              10     11 8   13    
        2   1 12     15 5   7    
  9   2 5     3   7   13     11  
10         14 15   16         12    
Showing puzzle number: 17116
Puzzletype: Symmetrical Sudoku
Startnumbers: 100
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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