Caissa Codex
D00

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

Chess diagram: Queen's Pawn Game: Accelerated London System, Steinitz Countergambit, Morris Countergambit after 3. e4

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Statistics from Lichess

33,017 games: White 51.0% / Draw 4.9% / Black 44.1%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
Queen's Pawn Game: Accelerated London System, Steinitz Countergambit, Morris Countergambit Accepted 21,22521K
4,2054,205
3,8503,850
2,5722,572
549549
325325
8282
7575

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 30, 2026

Engine evaluation

−0.20 The position is about equal

Best play: 3... dxe4 4. d5 Nf6 5. Nc3 g6 6. Qd2 a6 7. Nge2 b5 8. Ng3

Stockfish 19, depth 30, after the line's last move. Scores are in pawns, from White's side.

Overview

Queen's Pawn Game: Accelerated London System, Steinitz Countergambit, Morris Countergambit (ECO D00, Closed & Semi-Closed Games) is a gambit in the Queen's Pawn Game: Accelerated London System, Steinitz Countergambit, reached after 1. d4 d5 2. Bf4 c5 3. e4 (3 moves).

In 33,017 rated Lichess games between players rated 1600 to 2500, White won 51.0%, Black 44.1% and 4.9% were drawn. Black's most played move here is 3…dxe4, in 64% of those games.

It continues into one named variation, Queen's Pawn Game: Accelerated London System, Steinitz Countergambit, Morris Countergambit Accepted.

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How to answer 3. e4

3…Nc6 scores best for Black: 48.6%, with Black winning 45.9% and White 48.8% of 3,850 games. The most played, 3…dxe4, scores 46.7% in 21K games, and 3…cxd4 scores lowest: 44.3%. Stockfish's first choice is 3…dxe4.

Main answers: those played in at least 5% of these games. Score: Black's wins plus half the draws, in rated Lichess games between players rated 1600 to 2500. How to play against other popular openings

Variations (1)

Other lines from the same position

Instead of 3. e4, the position after Queen's Pawn Game: Accelerated London System, Steinitz Countergambit also goes on to:

Cite this page

Caissa Codex. “Queen's Pawn Game: Accelerated London System, Steinitz Countergambit, Morris Countergambit (D00)”. Lichess data as of 30 Oct 2026. https://chesscodex.org/openings/queens-pawn-game-accelerated-london-system-steinitz-countergambit-morris-countergambit

https://chesscodex.org/openings/queens-pawn-game-accelerated-london-system-steinitz-countergambit-morris-countergambit