Creepy Crawly Formation: Classical Defense
ECO A00
Move order
1. h3 d5 2. a3 e5
Ideas
ECO A covers irregular and flank openings—systems that skip the main e4/d4 fight early. The sequence begins with 1. h3 d5 2. a3 e5. 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.