While Chess: Middlegames is a massive work, László Polgár produced an even larger compendium titled Chess: 5334 Problems, Combinations, and Games . This book contains all the material from Chess: Middlegames and Chess: Endgames combined, along with other sections.
Polgar's book is strictly numbered. Shuffled indices make it incredibly difficult to cross-reference your digital software with the physical book. What Makes a PGN "Verified"?
: It covers deeper positional ideas such as Isolated Queen Pawn (168 positions), Hedgehog positions (108 positions), and Sicilian sacrifice positions (168 positions).
Polgar admired Petrosian. A verified defensive middlegame:
While there is no single official commercial PGN sold directly by a publisher for this specific book, community-verified versions exist on top chess databases.
1... Nd7! (Heading to c4 via b6 or e8) [%eval -0.89] "Black is slightly better due to blockade."
Based on verified collections, Polgar returned to five core middlegame motifs. Below are authentic, engine-checked examples.
