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Sudoku puzzles (Su Doku)

My database includes 12449 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every 3x5 box contains the digits 1 through 15. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

949245 puzzles downloaded.

2 5 3 12 11           15   6    
      13 10           11     8  
8 14   6     10 13       1 3 12  
3       6 10     7   8 11      
    14       3 8     4     6  
  8     2 6           9     15
9         4 1 7         15    
7 13       9 6   10 12       2 14
    1         5 2 14         7
14     2           8 7     13  
  3     15     12 9       14    
      11 5   4     15 9       8
  11 10 3       4 12     14   7 1
  1     9           12 5      
    8   4           3 10 9 11 6
Showing puzzle number: 7121
Puzzletype: Symmetrical Sudoku
Startnumbers: 88
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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