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Sudoku puzzles 4x4 (Su Doku)

My database includes 34183 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. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

7646280 puzzles downloaded.

3         12 11   1 13   5 14   2  
10   2 1     9         11     3 13
  14     1           12         16
8   6         2   10   14   7   15
5 16     9   3 4 7 14   6   13    
13 1 10                   7     3
12 3       13   14 5             2
      2 8         15 4         9
7         8 6         4 3      
15             5 14   7       8 4
16     5                   2 10 7
    8   16   4 7 2 11   1     6 12
1   11   12   7   9         10   5
4         5           15     13  
2 10     13         12     6 1   14
  6   16 3   15 9   5 2         11
Showing puzzle number: 4506
Puzzletype: Symmetrical Sudoku
Startnumbers: 102
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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