CTS-like database generator

[Geolm]

Hi,

I started to write a chess puzzle database generator to make some kind of CTS or CT-ART program on PC first then on my DS-lite. I took fruit source and began to write pgn parser, but I still don't really know how to "detect" a good tactic move in a game. I can try to find the pv with a decent depth for all moves and when the balance changes brutaly, there's a good tactical move to make, isn't there?

Cheers,
Guillaume