Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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