In seven books, the author presents a complete repertoire for White based on 1.d4. The books are intended for club (i.e. intermediate and stronger) players. This fourth volume deals with 4 variations of the Queen's Gambit: 1. QGA D23 (autor analyzes 2..dxc4 3.Nf3 Nf6 4.Na3); 2. The Ragozin variation D38 (3.Nc3 Nf6 4.Nf3 Bb4 5.cxd5 exd5 6.Bg5); 3. The Vienna variation D 39 (6.Bg5), 4. The Lasker variation D 56 (4.Bg5 Be7 5.e3 h6 6.Bh4 0-0 7.Nf3 Ne4 8.Bxe7 Qxe7 9.Rc1). The book contains analyzes with novelties for both sides, and each line includes separate chapters on the Typical Middlegame Strategy, Tactical motifs and Endgame Technique. Pictures 2, 3 show the contents of the book. GM Grivas was 2x Greek champion, he has been working as a trainer for several decades, since 2005 he is a FIDE Senior Trainer. He wrote more than 10 books, several of which have become bestsellers. Further information about the book and a sample are at chess-evolution.com