King's Indian Attack: Yugoslav Variation
ECO A07
Move order
1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bg4
Ideas
ECO A covers irregular and flank openings—systems that skip the main e4/d4 fight early. White develops a knight and keeps flexible transpositions into d4 or c4 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.