Langer's Sudoku Assistant

Invalid Sudoku!

Row 3 is invalid. Column 3 is invalid. The bottom left 3x3 Box is invalid. Go back and make a different choice.

 

6
2
1
7
1  2  3
4  5  6
7  8  9
5
8
3
8
7
3
4
6
8
9
5
1
2
8
5
9
2
1
3
4
6
7
3
5
7
9
8
4
1
6
2
1
2
8
3
6
7
       
4      
      9
       
4      
      9
5
6
9
4
1
2
5
3
7
8
8
7
6
5
4
3
2
1
8
       
4      
   8  9
       
4      
      9
1
2
7
6
       
       
   8  9
5
3
5
3
2
9
8
1
7
4
6

 

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