English Opening: King's English Variation, Kahiko-Hula Gambit
ECO A20
Move order
1. c4 e5 2. e3 Nf6 3. f4 exf4 4. Nf3
Ideas
ECO A covers irregular and flank openings—systems that skip the main e4/d4 fight early. White controls d5 without committing the d-pawn—the English family. This entry tracks a longer branch in the opening tree. Use the diagram and SAN list to recognize the tabiya, then try the line against Maia to explore typical plans in practice.