Four Knights Game: Gunsberg Variation

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.a3

ECO C47

The Four Knights Game: Gunsberg Variation is a chess opening line in the Four Knights Game complex, reached after 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.a3.

It is catalogued under code C47 in the Encyclopaedia of Chess Openings (ECO).

The defining move a3 is chosen by White on move 4.

One named continuation branches from this position: the Provincial Opening.

Named variations

• Four Knights Game: Gunsberg Variation, Provincial Opening — ECO C47

Study this line with a grandmaster

This position is covered in the Scotch 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.