Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Go back and make a different choice.

 

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

 

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