Library/Openings/English Defense/Hartlaub Gambit Declined ECO A40
Opening· 9 plies

English Defense: Hartlaub Gambit Declined

An entry in the Encyclopedia of Chess Openings (ECO A40), reached after 9 half-moves: 1. c4 e6 2. d4 b6 3. Nc3 Bb7 4. e4 f5 5. d5.

English Defense: Hartlaub Gambit Declined ECO A40
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Black rook
Black knight
Black queen
Black king
Black bishop
Black knight
Black rook
Black pawn
Black bishop
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
White pawn
Black pawn
White pawn
White pawn
White knight
White pawn
White pawn
White pawn
White pawn
White pawn
White rook
White bishop
White queen
White king
White bishop
White knight
White rook
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End of this line

No further variations branch from this position in our database. To explore neighbouring ideas:

About this opening

English Defense: Hartlaub Gambit Declined is an opening in the Encyclopedia of Chess Openings, classified under code A40. ECO group A (A00–A99) covers flank and irregular openings, including the English, Bird, Réti and Dutch defences. This particular variation is reached after 9 half-moves from the starting position, with the move sequence 1. c4 e6 2. d4 b6 3. Nc3 Bb7 4. e4 f5 5. d5.

It belongs to the English Defense family. Within that family this is a sub-variation (the Hartlaub Gambit Declined line).

The opening sequence in prose form: 1.c4 e6, 2.d4 b6, 3.Nc3 Bb7, 4.e4 f5, 5.d5. From this position the encyclopaedia records no further canonical continuations — practical play branches into unnamed transpositions or returns to the parent line for alternative ideas.