Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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