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.

 

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

 

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