i discovered an interesting set of problems called
Tactics In The Openings compiled by Richard Scholler at
Chessville in a 96 kb zipped ChessBase file (0.3 Mb unpacked)
Richard Schollar has taken nearly a thousand games with a tactic in the first 10 moves (although there are some 13 movers too.) and made them available to all as a free downloadable database in ChessBase format. He's included training questions and an analysis of the winning combination (thru CB8). This is a great way to study an overlooked part of opening preparation and sharpen your tactical vision at the same time
i have opened and successfully used them with Chessbase Light .. annotation is included, but is limited in the first few problems i've worked .. they provide an interesting set of problems from the perspective of opening positions .. i intend to sort them by ECO and begin working the set for openings that i am beginning to use
btw, andrea, the presentation style is the Fritz training mode you told me about in another post .. it is close to what i am looking for