The Blue Book and Encyclopedia of Chess
Harkness, Kenneth / Sloan, Sam
This book was originally published as "The Official Blue Book and Encyclopedia of Chess". In reprinting this book, the word "Official" has been deleted because the official rules have since been published by FIDE. However, the rules are substantially the same, just the new rules are more complex and detailed. The author, Kenneth Harkness, was the inventor and developer of the chess rating system that is now used in every country of the world. ...