Four Knights Game: Spanish Variation, Rubinstein Variation, Henneberger Variation

1.e4 e5 2.Nf3 Nf6 3.Nc3 Nc6 4.Bb5 Nd4 5.O-O

ECO C48

The Four Knights Game: Spanish Variation, Rubinstein Variation, Henneberger Variation is a chess opening line in the Four Knights Game complex, reached after 1.e4 e5 2.Nf3 Nf6 3.Nc3 Nc6 4.Bb5 Nd4 5.O-O.

It is catalogued under code C48 in the Encyclopaedia of Chess Openings (ECO).

The defining move O-O is chosen by White on move 5.

Study this line with a grandmaster

This position is covered in the Beat the Petroff 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.