Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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