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Sudoku puzzles (Su Doku)

My database includes 18732 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every box contains the digits 1 through 6. The grey boxes is even numbers and the white boxes is odd. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

123034 puzzles downloaded.

    5 2    
1         4
Showing puzzle number: 18158
Puzzletype: Optimal Sudoku
Startnumbers: 5
Difficulty: Very hard (0)
Solution methods: SiSo SB FI
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