| Feature | Book-only | PGN-based training | |---------|-----------|---------------------| | Active recall | Low (glance at solution) | High (must input moves) | | Spaced repetition | Manual impossible | Automated (e.g., Anki, Chessable) | | Variation exploration | Static diagrams | Interactive engine analysis | | Performance tracking | None | Time-per-problem, accuracy | | Portability | Heavy volumes | Cloud sync, mobile apps |
Use a PGN reader that hides the move list. Treat every middlegame position as a test. laszlo polgar chess middlegames pgn better
1. Qxf7# 1-0
Laszlo Polgar proved that genius is not born; it is built. His middlegame collection is not a book; it is a construction site for the chess brain. The keyword you searched——is the bridge between the analog genius of the 1990s and the digital training of today. | Feature | Book-only | PGN-based training |