English Opening: Porcupine Variation

1.c4 f5 2.Nc3 Nf6 3.e4 fxe4 4.g4

ECO A10

The English Opening: Porcupine Variation is a chess opening line in the English Opening complex, reached after 1.c4 f5 2.Nc3 Nf6 3.e4 fxe4 4.g4.

It is catalogued under code A10 in the Encyclopaedia of Chess Openings (ECO).

The defining move g4 is chosen by White on move 4.

Do you want to learn openings?

Start with a GM-authored repertoire you study move by move, then practice against a human-like AI opponent:

• Catalan Opening
• King's Indian Defense with ...e5

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