Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Go back and make a different choice.

 

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

 

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