Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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