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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.

7374976 puzzles downloaded.

9         11 4     13       1 12  
      2           9 12   8 13   4
12   3 5       15 2   4   11 9   16
  10   13           6 14 16     2  
  6         14   12   8         13
2   15     3 9             6    
13           7 8       6 3 11 14  
  3   9 6 13     16       2 7   1
11   13 3       7     5 9 1   10  
  7 10 16 14       6 12           5
    5             7 16     4   12
15         4   1   14         16  
  5     15 14 11           16   7  
16   6 10   8   13 7       15 12   9
7   9 4   1 12           14      
  12 2       3     8 9         11
Showing puzzle number: 6057
Puzzletype: Symmetrical Sudoku
Startnumbers: 104
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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