Karpov books, why strategic wins better than his own annotation
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why?
download the books and judge for yourself...
Karpov's Strategic Wins 2 by Tibor Karolyi...
https://www.pdfdrive.com/karpovs-strategic-wins-2-the-prime-years-1986-2010-e157785006.html
Anatoly Karpov: My 300 best games by Anatoly Karpov...
https://www.pdfdrive.com/anatoly-karpov-my-300-best-games-e158577238.html
I've downloaded from both sites extensively. They are safe...
Scribd and PDFdrive For Online Chess Book Reading, Downloading
https://www.chess.com/blog/RussBell/scribd-com-for-online-chess-book-reading