Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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