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Sudoku puzzles (Su Doku)

My database includes 2967 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row and every column contains the digits 1 through 16. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

285618 puzzles downloaded.

  3 9       7 1 4   16 14   13   10
      13 10     7 8   11     14 4 9
14     9 11     16   2 13 10   15 1  
6     14       5 1     3     7 16
16       5   4 12 3 7 6       13  
      1 2   13   5 11   15   16   6
7 13 16 8   14 15   9   4   3   6  
15     4   5 12       7   8 9   1
4   2 12   1       5 3   10     13
  8   7   11   13   6 12   14 4 5 3
13   10   3   5 14   9   12 1      
  4       3 1 10 13 12   11       15
5 10     12     8 6       15     7
  1 4   9 2 14   11     13 7     5
1 9 5     8   4 2     6 12      
9   12   7 6   11 14 3       5 2  
Showing puzzle number: 2240
Puzzletype: Symmetrical Sudoku
Startnumbers: 134
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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