Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 2 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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