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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.

7542755 puzzles downloaded.

5   1   7       15   3     4    
  6                 1          
    16 14 9       4   8     15    
15 10     13 14 16 4   2 6       7 8
      2 11 10           13 16      
3 12 6 4       7 8       9      
  15 8       9 16   11     6 5    
13     11 8 12           10   7 2  
  5 7   12           10 8 15     11
    12 16     14   11 7       1 10  
      15       11 1       12 2 8 9
      10 6           15 9 3      
4 7       11 13   5 9 12 6     1 14
    15     1   6       4 2 13    
          4                 3  
    9     3   8       7   6   4
Showing puzzle number: 20390
Puzzletype: Symmetrical Sudoku
Startnumbers: 100
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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