is there any chess program out there that allows people to practise their prepared repitioire? 

(you're playing black) the computer will give white's first move (which you have saved into its database) and you respond and it gives you the next one and so on

also helpful is the computer playing the variations you are not very familiar with

there's seriously no such thing?

a company like chessbase could make thousands with such a thing!

If you don't come up with anything off the shelf, this actually sounds like something I could probably put together.  It's difficult to imagine ever finding the time to do so, but if there really isn't anything already out there, it might be worth some thought.

Fritz has the option under extra, training, opening training. It takes a bit of fidgeting, but I think on the detailed setting it will warn you if you made the ''wrong'' move so you can take it back.

http://www.chesspositiontrainer.com/

http://www.bookup.com/

http://kebuchess.com/openings/

There are probably others.

What I would really like, and which doesn't exist yet, is a graphical opening explorer - board on one side, tree on the other - in which the tree moves are rectangles that can be coloured and ordered vertically according to various metrics. The view of the tree could be freely zoomed and panned so the user would have full control over the number of moves/depth displayed. Hovering over a move would cause the position to be displayed on the board, and any transposition paths could also be highlighted.

yeah that's nice

i'm using chessbase is that the same thing?

No, I think that's a database more than anything else. It can never hurt to look under your program's options, but I really doubt it has that.

......

@gavinator

not always a win...

in fact, database has white as loss in many, but have you seen this game from master database? http://www.chess.com/games/view.html?id=198942 lol 

or black is a good player and white has prepared this only for beginners. happened to me where weaker player tried this against me and i back rank checkmated him lol

hes a master

this is a one in a million game, but it made me lol. if u like this openeing, fine, but i just like the fight when discussing this opening. (good or bad)

Pertaining to the original post - I use Chess Position Trainer.  They released a new version at some point recently, and I absolutely love it.  You put in all of the openings you want, move by move...  It calculates for transpositions into other openings you have, etc, and you can test yourself with it.  It'll keep track of which positions you've done well with, and which ones you need more practice with.  It'll create a training program for you which will tell you that you need to recall xxx number of positions to stay on schedule over the next y number of days...  It was pretty much everything I looked for.