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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.

6             3     9 15        
3 4       14         5 11 13   6 16
15       6   10     2     12   7 3
13     2   7 16   12   1   5 9    
  15     10   9 14 11         1 4  
4       3         8           6
  10 14         8 5 6   4       12
        5 6 12   9   15     14 3 2
14 7 2     8   9   11 6 1        
1       7   3 10 15         6 13  
16           2         9       11
  11 3         6 4 13   16     2  
    1 14   3   5   16 7   6     4
7 2   4     14     1   5       8
5 3   11 1 2         4       10 13
        11 10     2             14
Showing puzzle number: 18399
Puzzletype: Symmetrical Sudoku
Startnumbers: 106
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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