Queen's Pawn Game: Accelerated London System, Steinitz Countergambit, Morris Countergambit Accepted

1.d4 d5 2.Bf4 c5 3.e4 dxe4

ECO D00

The Queen's Pawn Game: Accelerated London System, Steinitz Countergambit, Morris Countergambit Accepted is a chess opening line in the Queen's Pawn Game complex, reached after 1.d4 d5 2.Bf4 c5 3.e4 dxe4.

It is catalogued under code D00 in the Encyclopaedia of Chess Openings (ECO).

The defining move dxe4 is chosen by Black on move 3.

Do you want to learn openings?

Start with a GM-authored repertoire you study move by move, then practice against a human-like AI opponent:

• Catalan Opening
• King's Indian Defense with ...e5

Every chess term used here is defined in the chess terms glossary. Browse all opening courses or the full ECO code index.