Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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