Queen's Gambit Accepted: Classical Defense, Alekhine System

An entry in the Encyclopedia of Chess Openings (ECO D28), reached after 13 half-moves: 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Qe2.

Black rook — Use ← → arrows or click moves to step through.

Black knight — Use ← → arrows or click moves to step through.

Continue from this position

One reply continues into a sub-variation from this position. Click any to drill deeper.

7…b5 2 lines
- D29 Main Line
- D29 Smyslov Variation

About this opening

Queen's Gambit Accepted: Classical Defense, Alekhine System is an opening in the Encyclopedia of Chess Openings, classified under code D28. ECO group D (D00–D99) covers closed games and semi-closed games beginning 1.d4 d5, covering the Queen's Gambit, Slav, Grünfeld and related queen-pawn structures. This particular variation is reached after 13 half-moves from the starting position, with the move sequence 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Qe2.

It belongs to the Queen's Gambit Accepted family. Within that family this is a level-2 branch (the Classical Defense → Alekhine System line). The immediate parent line is Queen's Gambit Accepted: Classical Defense, transitioned via 7.Qe2.

The opening sequence in prose form: 1.d4 d5, 2.c4 dxc4, 3.Nf3 Nf6, 4.e3 e6, 5.Bxc4 c5, 6.O-O a6. From this position exactly one named continuation is recorded in the encyclopaedia.