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Sudoku puzzles (Su Doku)

My database includes 10934 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every 3x4 box contains the digits 1 through 12. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

2190849 puzzles downloaded.

      4   12       2 3 11
  8   12 11           4  
1   11   4 6            
11   7     5   9 2      
4     10       7     1  
8     1     10     9    
    9     3     8     10
  4     12       3     9
      2 9   5     1   4
            7 10   11   1
  11           3 7   8  
10 5 8       11   9      
Showing puzzle number: 576
Puzzletype: Symmetrical Sudoku
Startnumbers: 52
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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