“Yusupov series of books (Build up your chess, Boost your chess, Chess Evolution) for players in 1000-2200 level approx. is good recommendation.”
GM Ramesh, probably the best trainer in the world. Trainer of Praggnanandhaa, Aravind and many other promising young Indians.
“I would like to once again draw attention to the perfect chess lessons by Artur Yusupov, published in no less than nine beautiful parts by Quality Chess.”
Bab Wilders, Nederlands Dagblad