Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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