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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.

4961332 puzzles downloaded.

9   11   7 12     2     13 4      
13   5   9   10 3             1 6
2 10         1     3         12  
      8 15     4     10 12 7     13
12   10 1     6     16     14     2
    15           10   12     6    
  6 2 16 3 7     5              
7   8   16   12 10 11 2   15     5  
  1     4   16 7 6 8   10   5   9
              11     14 1 16 15 6  
    13     15   8           11    
14     3     5     15     2 4   10
3     5 14 16     15     11 8      
  8         15     10         16 1
10 12             16 4   3   14   5
      13 10     12     2 5   3   11
Showing puzzle number: 29431
Puzzletype: Symmetrical Sudoku
Startnumbers: 104
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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