Puzzle Description:

A made a special multipurpose puzzle. 1st: solve this PBN. 2nd: understand the next level. 3rd: solve the new problem. 4th (extra, only for professional mathematicians): How many different solutions has got this PBN and how many has got the other puzzle? :))

#1: Kristen Vognild (Kristen) on Jun 23, 2013 [SPOILER]

2) It's obviously a sudoku; that much is obvious from the framework. I think it's safe to say that most of us here are sudoku fans.
3) 7 9 8. 2 5 6. 1 3 4
2 3 1. 7 4 8. 9 6 5
6 4 5. 3 9 1. 7 8 2

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

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

4) There are 4 solutions if you assume the 2s and 3s each slant the same way. That already makes this invalid as a PBN, according to the rules of this site.

4) Much more different solves. Both 2s and 3s can stand in more positions and all of them independent of every others. But in ALL variations the sudoku remains the same (as yours) and that is the only interesting in this puzzle (not the PBN rules...)

(Pls send your grandmothers surname! It can be we are relatives. who knows?) :)

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