Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 8 is invalid. The top right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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