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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.

6545738 puzzles downloaded.

14     12     2         13 4     5
13       6 4   15     11     14   9
  11       13   1   10 16   6      
  1 2 15   9       4         13  
5           7 3 12         15 2 8
  16 3       5 13   15         10  
    8       4     14 13     7   11
7 6         15     2   11     16  
  2     11   6     9         7 13
6   4     3 14     7       1    
  10         12   5 11       16 14  
11 9 1         4 10 13           3
  13         10       4   2 9 12  
      5   16 13   2   9       8  
4   10     12     11   6 15       16
9     11 15         16     3     10
Showing puzzle number: 6675
Puzzletype: Symmetrical Sudoku
Startnumbers: 100
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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