A: Depending on the compilation, between 2,500 and 3,200 positions. A "complete" Polgar training PGN (including tactics, endgames, and middlegames) would be roughly 5,334 positions.
1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Be3 O-O 8. Qd2 e5 9. d5 Na6 10. Nh3 f5 11. exf5 gxf5 12. Qe2 Qe7 13. O-O-O b6 14. Kb2 Bb7 15. Qg4 Rfd8 16. Nxg5 hxg5 17. Qxg5+ Kh8 18. Qh4+ Qh7 19. g4 fxg4 20. Rxg4 1-0 Laszlo Polgar Chess Middlegames Pgn
For years, dedicated students have searched for a digitized version of these concepts. The holy grail for the digital trainer is the . If you want to train like the Polgar sisters (Judit, Susan, and Sofia)—three of the most successful female chess players in history—you need to understand how to isolate and practice these middlegame positions. A: Depending on the compilation, between 2,500 and