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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.

877105 puzzles downloaded.

  11 1 6   12 8     3 13 2      
7     14           15         12
      4     7 10     11        
2 14 6     5           7 3 10  
  15         9 4       1   11 5
      5   10   6   1     12   9
11 5           7 12 14 15 6      
          11 10   8 9          
      13 7 2 15 5           12 11
5   8     15   11   12   3      
15 9   10       13 3         6  
  1 2 12           4     13 8 14
        12     3 11     10      
1         14           5     13
      2 14 6     15 5   11 4 7  
Showing puzzle number: 12166
Puzzletype: Symmetrical Sudoku
Startnumbers: 88
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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