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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.

337796 puzzles downloaded.

14     4 3         11 5 7 1 10   15
10   3 8     15   2 16   4     11 9
  6 8       2 4 7   13   15 16    
1     7 9 5   8 6     10   11 12  
16 3 7 11   4   10 8   14       13  
12           11         16 2 1 7  
      16   8 5 15 4 6 11   10 14    
6   14 12       3     7 1 8   5  
  14   5 2 7     11       4 12   10
    2 6   1 14 12 10 5 15   11      
  16 15 3 10         9           1
  9       16   11 15   2   14 8 4 3
  2 10   11     14 12   9 5 6     13
    16 13   11   9 3 14       2 6  
2 10     4   9 1   7     16 6   8
13   12 2 8 3 4         9 7     6
Showing puzzle number: 185
Puzzletype: Symmetrical Sudoku
Startnumbers: 134
Difficulty: Very hard (0)
Solution methods: SiSo SC DC XW SF
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