Ordo Ab Chao

OK, there's a coffee drinking german in the 4th house who keeps fish as pets. Lucky the cats are in the first house, a safe distance away. The really funny thing about this particular puzzle is how similiar to sudoku it really is. For anyone living in siberia for the last few months Sudoku is really addictive. You start with small easy games and move on up to medium, hard & mind-numbing. Richard Rodgers had quite a few fascinating posts on solving it using a procedural approach. Generally, I prefer a declarative approach and prolog is definitely my language of choice. However, if anyone can come up with a tasty way to solve it using neural nets I'd love to see it.