Polish Opening: Queen's Indian Variation
ECO A00
Move order
1. b4 e6 2. Bb2 Nf6 3. b5 b6
Ideas
ECO A covers irregular and flank openings—systems that skip the main e4/d4 fight early. White gains queenside space immediately—the Sokolsky / Polish family. 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.