QUESTION: What are lists of strategic choices by scenario? (ex in description)

What are some lists of options when you are in various situations in chess?

As an example--

When you're placed in check, you only have three options: 1) Kill the attacking piece, 2) Block it, 3) Move out of the way

Let's say you're pinned, or forked, or in a losing position, what are lists of options for various scenarios. I'm mostly interested in lists which are finite and not open ended.

What are other chess logical truths like this?

First of all I don't think there is anything "strategic" in these choices - we are talking about short and concrete move sequences - so IMHO it's more about tactics, not strategy.

It's simple to answer your question for scenario when you are in check because options are so limited. For other cases (forks, pins etc.) I don't know if finite list can be easily created. Well we can always say that there is a list of all legal moves

Anyway if you are forked for example your opponent is typically hoping to gain some material. But it could be that you reply with even stronger threat - you can go for mate, or for attack on more valuable piece, or create passed pawn, or one of forked pieces can escape with check. If some material loss is inevitable you can search to minimize the damage. Same kind of analysis can be made for pin etc. Just I don't think making lists can help - but training and playing can!

Pre Move Checklist

1. Make sure all your pieces are safe.

2. Look for forcing move: Checks, captures, threats. You want to look at ALL forcing moves (even the bad ones) this will force you look at, and see the entire board.

3. If there are no forcing moves, you then want to remove any of your opponent’s pieces from your side of the board.

4. If your opponent doesn’t have any of his pieces on your side of the board, then you want to improve the position of your least active piece. 

Infinkity, it strikes me that you are trying to develop a thought process by which you can begin to learn and understand what goals you have in positions. While I would tend to stay away from positional aphorisms lest it yield you bad habits, would you like to post a couple of games and tell us where you most badly struggle to have clear goals?

You also mention being forked. Perhaps it would benefit you to do some regular tactics training on a basic level with forks, pins, skewers, etc, but where you look at how the defending player handled those situations. Ie did he counterattack elsewhere, and what the conditions were under which he got forked. I have no idea how easy it would be to do that with a chessbase database, but I have thousands of games played in real and online and if you would like to look through a few and do some tactics training together I'd be happy to arrange something with you.