Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 9 is invalid. The top right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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