Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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