Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 8 is invalid. The top right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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