The Orthodox Defense, Rubinstein Attack is a variation of the Queen's Gambit Declined, catalogued as ECO D64. The line runs 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. Qc2, reaching the position shown below after 15 half-moves.
Both sides have pawns in the centre (White on d4, Black on d5), and one pawn capture is available, so the structure has not settled yet. Development is level at three minor pieces each. It is Black to move after eight moves. Black has castled while White’s king is still uncommitted.
On the Queen's Gambit Declined generally: A solid and respected response to the Queen's Gambit. Black maintains a strong central presence.
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The Orthodox Defense, Rubinstein Attack goes 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. Qc2. It is a variation of the Queen's Gambit Declined and is catalogued as ECO D64.
The Orthodox Defense, Rubinstein Attack is ECO D64. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Queen's Gambit Declined.
Stockfish evaluates the position after 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. Qc2 at +0.21 at depth 18, which is balanced. Engine evaluation is only a starting point — at club level the practical value of a line is mostly about whether you know its plans better than your opponent does.
Both sides have pawns in the centre (White on d4, Black on d5), and one pawn capture is available, so the structure has not settled yet. Development is level at three minor pieces each. It is Black to move. Black has castled while White’s king is still uncommitted.