Grob Opening: London Defense
ECO A00
Move order
1. g4 e5 2. h3 Nc6
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. The variation is defined by a short, recognizable move order. Use the diagram and SAN list to recognize the tabiya, then try the line against Maia to explore typical plans in practice.