improvement in middlegame


It's less important to know the moves of all the various lines and know the ideas behind the opening. For example, the last four times I've played the Caro-Kann or Slav Defenses, we were out of the books by moves 2-5. But I knew the defenses are both designed to get my QB to f5 or g4 before moving a pawn to e6 and blocking it in, etc. Even though we left the books, I was able to achieve a good middlegame because I knew what the strategy was.
You also need to work on tactics. I work on them every day here and at chesstempo.com and after every problem, success or fail, I look at the NAME of the tactic. Associating the tactic with a name creates a link in your mind that will help you see it in a game easier.
If you don't recognize tactics and patterns, how can you plan an attack?
If you can spend the money on books, Back to Basics: Tactics by Dan Heisman is excellent as are the the Yasser Seirawan books on tactics and strategy.
Finally, tactics/strategy books like the relatively easy and straightforward Simple Attacking Plans by Fred Wilson or the complex How to Reassess Your Chess 4th ed. by Jeremy Silman are worthwhile.
Possibly of interest:
Simple Attacking Plans by Fred Wilson (2012)
https://web.archive.org/web/20140708090402/http://www.chesscafe.com/text/review874.pdf
https://www.newinchess.com/Shop/Images/Pdfs/7192.pdf
Back to Basics: Tactics by Dan Heisman (2007)
https://web.archive.org/web/20140708233537/http://www.chesscafe.com/text/review585.pdf
How to Reassess Your Chess by IM Jeremy Silman
https://web.archive.org/web/20140708095832/http://www.chesscafe.com/text/review769.pdf
Seirawan stuff
http://seagaard.dk/review/eng/bo_beginner/ev_winning_chess.asp?KATID=BO&ID=BO-Beginner

looking at the games of a good attacking player, for example
http://www.chessgames.com/player/rashid_gibiatovich_nezhmetdinov.html
this site is very helpful.

Your game plan will depend on what opening you play.
You need to understand the "why" behind the moves in the opening(s) you play. Just memorizing lines of theory isnt going to help you develop a good middle game plan.
let me give you a quick and simple example.
A good middle game book is Understanding Chess Middle Games by GM Nunn. You will learn a lot about different types of middle game position from this book.

Your game plan will depend on what opening you play.
You need to understand the "why" behind the moves in the opening(s) you play. Just memorizing lines of theory isnt going to help you develop a good middle game plan.
let me give you a quick and simple example.

Your game plan will depend on what opening you play.
You need to understand the "why" behind the moves in the opening(s) you play. Just memorizing lines of theory isnt going to help you develop a good middle game plan.
let me give you a quick and simple example.
"... I feel that the main reasons to buy an opening book are to give a good overview of the opening, and to explain general plans and ideas. ..." - GM John Nunn (2006)
"... For inexperienced players, I think the model that bases opening discussions on more or less complete games that are fully annotated, though with a main focus on the opening and early middlegame, is the ideal. ..." - FM Carsten Hansen (2010)
"... Everyman Chess has started a new series aimed at those who want to understand the basics of an opening, i.e., the not-yet-so-strong players. ... I imagine [there] will be a long series based on the premise of bringing the basic ideas of an opening to the reader through plenty of introductory text, game annotations, hints, plans and much more. ..." - FM Carsten Hansen (2002)
https://web.archive.org/web/20140627055734/http://www.chesscafe.com/text/hansen38.pdf