Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
The first box
invalidates the third Sudoku rule.
How is this not valid??
1 2 3 4 5 6 7 8 9
2 3 1 5 6 4 8 9 7
3 1 2 6 4 5 9 7 8
4 5 6 7 8 9 1 2 3
5 6 4 8 9 7 2 3 1
6 4 5 9 7 8 3 1 2
7 8 9 1 2 3 4 5 6
8 9 7 2 3 1 5 6 4
9 7 8 3 1 2 6 4 5
I had some fun after that comment. ;)