Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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