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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 4     9 6   11         15
9 4 1     14       8 10   3   11  
    10 7         2 14   3 13   9  
  6 3   7     12       16   1   8
      4 5 15         8 12       6
                      15   13   10
  15 8         14 11 9       16 3  
  7         8   3     5     4 1
7 11     14     13   12         5  
  10 5       16 1 13         4 14  
8   14   6                      
4       9 12         14 8 15      
11   4   1       10     7   5 13  
  12   16 10   14 5         9 2    
  13   1   3 11       9     7 6 12
2         7   16 4     6 1     3
Showing puzzle number: 8991
Puzzletype: Symmetrical Sudoku
Startnumbers: 102
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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