Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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