Assuming you have read the standard books, try any book by Mark Dvoretsky, such as his book on strategic play or his Chess Tests. I would also suggest any Informant, book or electronic. Hope that helps.
Any suggestions for improving strategy&tactics?

Assuming you have read the standard books, try any book by Mark Dvoretsky, such as his book on strategic play or his Chess Tests. I would also suggest any Informant, book or electronic. Hope that helps.
Thank you for the suggestion.

i think you are the one to suggest chess books for us. your rating serves as credibility. what chess books did you read that obtained you that 2000's rating.?
Yeah, maybe I am a pretty experienced player but I took a long break (about 1 year) so now I have to take it up again. I am currently studying a book written by Karpov, something about evaluating positions and strategy.

You might check out some of what I refer to as "advanced" books listed toward the end of this article...
Good Positional Chess, Planning & Strategy Books for Beginners and Beyond...
https://www.chess.com/blog/RussBell/introduction-to-positional-chess-planning-strategy

You might check out some of what I refer to as "advanced" books listed toward the end of this article...
Good Positional Chess, Planning & Strategy Books for Beginners and Beyond...
https://www.chess.com/blog/RussBell/introduction-to-positional-chess-planning-strategy
Looks like you did a lot of research. I'm gonna read that article, thanks for all the information provided.
PS: What means Class-A rated players?

The US chess Federation divides players into classes according to rating:
2200 and above=Master
2000-2200= Expert
1800-2000=Class A
1600-1800=Class B
1400-1600=Class C
1200-1400=Class D
below 1200=Class E
Most big USCF tournaments are divided into different sections for each class, though often the D and E class are lumped together with unrated, or Experts compete in the same sections as masters. There are usually prizes for best Expert in the top class, best Class D in the low section, etc. Smaller tournaments will just have prizes for best in each class.

The US chess Federation divides players into classes according to rating:
2200 and above=Master
2000-2200= Expert
1800-2000=Class A
1600-1800=Class B
1400-1600=Class C
1200-1400=Class D
below 1200=Class E
Most big USCF tournaments are divided into different sections for each class, though often the D and E class are lumped together with unrated, or Experts compete in the same sections as masters. There are usually prizes for best Expert in the top class, best Class D in the low section, etc. Smaller tournaments will just have prizes for best in each class.
Ok, that makes sense now. In Europe we don't have these classes, so that's why I asked. Thanks!

You might check out some of what I refer to as "advanced" books listed toward the end of this article...
Good Positional Chess, Planning & Strategy Books for Beginners and Beyond...
https://www.chess.com/blog/RussBell/introduction-to-positional-chess-planning-strategy
Looks like you did a lot of research. I'm gonna read that article, thanks for all the information provided.
PS: What means Class-A rated players?
Class A = 1800 Elo and above...
https://en.wikipedia.org/wiki/Chess_rating_system
P.S. I have been collecting and researching chess books for over 30 years. I own hundreds of chess books, including all that are cited in my blog articles...
https://www.chess.com/blog/RussBell
Hi! My rating is currently 2044 (FIDE). I've recently taken a break from chess and I'd like to take it up again. Which book would you recommend me to study? Therefore, I'm looking to improve my strategy and tactics to get a FIDE title (that means over 2200).
PS: only suitable ones