Middlegame Links

                                                      

Wikipedia
Middlegame Tips and Planning
General Middlegame Advice (Exeter Chess Club)
Basic Middlegame Strategy (pdf)
Introduction to Chess Strategy
Improve Your Middle Game 
Instructional Chess Games (Exeter Chess Club) 

  

Solution 

  
Alekhine's gun
How To Build An Attack
Be Sharp
The Razor's Edge
Focus
Hermann - Charousek, Budapest 1896
Chekhover - Rudakovsky, Moscow 1945
Boleslavsky - Lisitsin, Moscow 1956  (The game at Chessgames.com)