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Sudoku puzzles (Su Doku)

My database includes 4320 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every 2x2 box contains the digits 1 through 4. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

777184 puzzles downloaded.

2     3
  3    
    4  
4     2
Showing puzzle number: 3970
Puzzletype: Symmetrical Sudoku
Startnumbers: 6
Difficulty: Super easy (0)
Solution methods: SiSo
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