Van't Kruijs Opening: Keoni-Hiva Gambit, Ekolu Variation
ECO A00
Move order
1. e3 e5 2. Nc3 d5 3. f4 exf4 4. Nf3
Ideas
ECO A covers irregular and flank openings—systems that skip the main e4/d4 fight early. White keeps the center flexible, often transposing into reversed French or Colle setups. 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.