King's Gambit Declined: Classical Variation, Rubinstein Countergambit

1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.c3 f5

ECO C30

The King's Gambit Declined: Classical Variation, Rubinstein Countergambit is a chess opening line in the King's Gambit Declined: Classical Variation complex, reached after 1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.c3 f5.

It is catalogued under code C30 in the Encyclopaedia of Chess Openings (ECO).

The defining move f5 is chosen by Black on move 4.

Study this line with a grandmaster

This position is covered in the King's Gambit course: a GM-authored repertoire you study move by move, then practice against a human-like AI opponent.

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