Grob Opening: Zilbermints Gambit, Zilbermints-Hartlaub Gambit
ECO A00
Move order
1. g4 d5 2. e4 dxe4 3. Nc3 e5 4. d3
Ideas
ECO A covers irregular and flank openings—systems that skip the main e4/d4 fight early. White pushes the g-pawn early, aiming for kingside space at the cost of king safety. 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.