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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.

2   10       12   8 16   6   15 3  
4 16   3           13   10   14 5 2
12   13 11   14 10 2   4 15   7   16 6
5   15 9             1          
10           6     5   12   9 13 11
  15 5       11 14 4     16 3      
  1 14       7 5       13 12 16    
            9     10     2   15  
  11   4     1     7            
    9 7 14       15 11       2 6  
      13 5     10 16 1       7 8  
16 14 12   7   4     3           10
          13             15 4   3
13 2   15   1 16   11 14 4   6 5   9
6 5 4   9   14           1   11 7
  9 3   11   5 12   6       8   16
Showing puzzle number: 17903
Puzzletype: Symmetrical Sudoku
Startnumbers: 112
Difficulty: Super easy (0)
Solution methods: SiSo
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