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Sudoku puzzles diagonals (Su Doku)

My database includes 5816 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. The diagonals must also contain 1 through 16. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

1090126 puzzles downloaded.

  6                       16   15
      16 15         10 3          
10         12   16 6       14 9   4
1 15 9   10   14       11 2     7 6
  12       9     11              
  7 5 10 2 15 13   14     6     1  
  9     8     7           13 16  
  2 16 1 3   12   13   4     14    
    12     7   8   15   14 16 1 11  
  8 7           10     3     12  
  1     5     2   11 7 4 8 6 3  
              1     9       4  
3 14     6 2       7   11   12 8 1
15   6 9       3 1   2         16
          16 7         15 5      
7   1                       6  
Showing puzzle number: 626
Puzzletype: Symmetrical Sudoku
Startnumbers: 96
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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