English Opening: Four Knights System, Nimzowitsch Variation

1.c4 e5 2.Nc3 Nf6 3.Nf3 Nc6 4.e4

ECO A28

The English Opening: Four Knights System, Nimzowitsch Variation is a chess opening line in the English Opening complex, reached after 1.c4 e5 2.Nc3 Nf6 3.Nf3 Nc6 4.e4.

It is catalogued under code A28 in the Encyclopaedia of Chess Openings (ECO).

The defining move e4 is chosen by White on move 4.

Study this line with a grandmaster

This position is covered in the English Opening 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.