1. You can consult books and databases during the game.
2. You can use them as far as you want. (edit: although usually you'll find that your opponent plays something not in the book pretty quickly)
3. The analyze button is just a board on which you can move pieces around, just like on a physical board. That's actually encouraged to do during the game, it's good for your chess.
This topic has probably been discussed to death, but I'm new here, and I couldn't find an answer to this particular set of questions, so please bear with me.
In the "Cheaters & Cheating: What You Need to Know" section of the FAQs, it says the following regarding online games (as far as I understand, turn-based chess inlcudes online chess here):
Here's my questions:
1. What consitutes opening moves? Does this mean that one can consult books or databases only BEFORE the game starts (and I'd assume that before the game one could do whatever they wish), or DURING the opening?
2. If the latter is true, what constitutes the end of the opening? In other words, for how many moves one could use a book or a database? (btw, I don't have books yet, not do I have access to any databases -- I just want to play by the rules)
3. What about the "Analyse" button that shows next to the board (or below in the iPad)? I'm not sure how to use it yet, but is it intended for a post-game analysis, or could be used during an online game?
Thanks,
iChessYa