Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 4 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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