[Event "Event "] [White "Symmetrical English Opening"] [Black "4...d5 Line"] [Site ""] [Round ""] [Annotator "Annotator"] [Result "*"] [Date ""] [PlyCount "13"] 1. Nf3 Nf6 2. c4 c5 3. g3 Nc6 4. Bg2 d5 5. cxd5 Nxd5 6. Nc3 Nc7 7. a3 $5 { An idea of Nico Zwirs} (7. O-O {is standard.} )*