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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.

955063 puzzles downloaded.

    12 3 2           11 10 15   9
10           3     6     4 7  
11   15                       6
13 12   11         5 3          
  3 2     14 13 7       11 9 5  
5 15       8     6   1 13     7
15 14         2   1   5       8
    11   8 12   3   4 14   2    
4       6   11   14         15 1
2     10 14   9     15       8 11
  11 7 4       13 2 5     10 6  
          10 7         5   12 14
1                       11   15
  4 13     3     12           2
12   6 2 9           3 7 1    
Showing puzzle number: 4562
Puzzletype: Symmetrical Sudoku
Startnumbers: 89
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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