Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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