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Manella, Zohar - Play Unconventional Chess
In this book the reader will discover the incredible power unconventional moves can have. These moves contradict the most fundamental principles of the old chess , and yet most of them played by leading grandmasters.
At first sight these moves look so strange that the reader can not avoid asking, Was this grandmaster was inspired or drunk? The answer will definitely surprise you.
Czerwin - Chess Progress
A book for beginners or teachers. It's a well-done book, the author is a famous professor in the USA and more specifically in Illinois. His method seems clear: the study of simple positions with few pieces on the chessboard, and the further you go, the more you'll have pieces and complex positions to resolve. This method isn't really new, but it should work perfectly.