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Yusupov, A. Build up your chess 2, beyond the basics

Yusupov, A. Build up your chess 3, mastery

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Yusupov, A. Chess Evolution 3, mastery

Zhadanov, P. David vs Goliath

Ziatdinov, R. GM-RAM: Essential Grandmaster Knowledge

Zlatanovic, B. Bishop versus Knight, the Eternal Battle