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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.

13 2   5           7   6        
    1   5   8         3        
    15   7       9 12     4 2 16  
14 12       1 2       15 8        
  10         11 6 3 2     13     4
  6     13   10 7   1 11 16   5 14  
9 7           15   14 10 13 12   8  
4   13         12       7 11      
      1 8       5         6   14
  11   2 16 4 1   7           12 15
  8 9   11 15 3   12 13   14     4  
3     13     9 2 10 15         5  
        15 2       16 8       1 5
  15 16 4     7 8       12   10    
        9         3   10   15    
        10   12           3   2 16
Showing puzzle number: 16023
Puzzletype: Symmetrical Sudoku
Startnumbers: 102
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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