Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 2 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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