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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.

6906875 puzzles downloaded.

3         13 7 4 6 15           14
  10   8 5 9       16   4   15   7
7     14     15 16   12 10   5      
5   13           3 2           6
  16   5   4         6       10  
9         2         13     5 4 1
    2       14 15       16 8     3
  12       11     15 8 3 1 9      
      6 15 14 11 9     8       5  
15     11 12       7 10       1    
14 8 10     16         1         15
  9       7         5   6   3  
6           10 2           9   5
      1   3 6   14 7     10     16
13   15   11   1       4 10 7   12  
11           9 13 16 1 15         4
Showing puzzle number: 25364
Puzzletype: Symmetrical Sudoku
Startnumbers: 102
Difficulty: Very easy (0)
Solution methods: SiSo SC
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