Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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