Tarrasch Defense: Classical Variation, Bogoljubow Variation

The Tarrasch Defense: Classical Variation, Bogoljubow Variation is a chess opening classified under ECO code D34 in the Closed & Semi-Closed Games family, arising from 1.d4 d5, including the Queen's Gambit, Slav Defense, and related systems. It is reached after 10 moves: 1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. Nf3 d5 5. cxd5 exd5 6. g3 Nc6 7. Bg2 Be7 8. O-O O-O 9. Bg5 Be6 10. Rc1 c4. The resulting position leaves white to move.