The legendary Laszlo Polgar—father and coach of the Polgar sisters—changed chess pedagogy forever with his massive "brick" books. While his most famous work, Chess: 5334 Problems, Combinations, and Games , is a staple for beginners, serious players often hunt for his specialized middlegame materials in PGN (Portable Game Notation) format to streamline their training.
The latter part of Polgar’s book contains games played by the Polgar sisters and historical greats. laszlo polgar chess middlegames pgn better