The Anti-Tartakower Variation, Petrosian Variation is a variation of the Queen's Gambit Declined, catalogued as ECO D55. The line runs 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 h6 6. Bxf6 Bxf6 7. e3 O-O 8. Rc1 c6 9. Bd3 Nd7 10. O-O dxc4 11. Bxc4, reaching the position shown below after 21 half-moves.
White holds the centre with pawns on d4. Development is level at four minor pieces each. It is Black to move after 11 moves. Both kings have castled kingside, so play tends to shift to the centre and the opposite flank; Black has the bishop pair.
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 Anti-Tartakower Variation, Petrosian Variation goes 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 h6 6. Bxf6 Bxf6 7. e3 O-O 8. Rc1 c6 9. Bd3 Nd7 10. O-O dxc4 11. Bxc4. It is a variation of the Queen's Gambit Declined and is catalogued as ECO D55.
The Anti-Tartakower Variation, Petrosian Variation is ECO D55. 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 h6 6. Bxf6 Bxf6 7. e3 O-O 8. Rc1 c6 9. Bd3 Nd7 10. O-O dxc4 11. Bxc4 at +0.17 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.
White holds the centre with pawns on d4. Development is level at four minor pieces each. It is Black to move. Both kings have castled kingside, so play tends to shift to the centre and the opposite flank; Black has the bishop pair.