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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.

3568299 puzzles downloaded.

    12       13           2     16
14   6           15     4       11
16   13     9 4 1 3 2       6   5
        11 15       6 10   4 3   1
    10     8 5           3      
6 8 15 4       13 7     5   1    
      13 1 11 6     12     8      
  7 1 2       16   15 14   13   10  
  10   6   2 7   14       11 13 16  
      5     1     7 11 2 14      
    7   6     3 4       9 2 15 10
      16           10 3     8    
2   16 10   4 15       8 7        
7   14       12 10 13 3 4     16   8
13       8     11           12   14
8     11           5       10    
Showing puzzle number: 2900
Puzzletype: Symmetrical Sudoku
Startnumbers: 102
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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