Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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