Queen's Gambit Declined Orthodox Variation: A Chess Works

Queen's Gambit Declined Orthodox Variation: A Chess Works Publication by Schiller, Eric - ISBN 10: 4871874842 - ISBN 13: 9784871874847 - Ishi Press - 2012 - Softcover

Chess Opening Essentials vol.2: 1.d4 d5 and 1.d4 various

Opening • Queen's Gambit Declined: Orthodox Defense, Classical Variation •

Queen's Gambit Declined: 5 Bf4 book by Colin Crouch

Queens Gambit Declined – played by Grandmasters worldwide – Expert-Chess -Strategies.com

Lev Polugaevsky - Wikipedia

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The Vienna variation of the Queen’s Gambit Declined is a complex and fascinating system arising after 1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Nf3 Bb4 5 Bg5 dxc4.

Queen’s Gambit Declined: Vienna