English Opening: King's English Variation, Four Knights Variation, Fianchetto Line

The English Opening: King's English Variation, Four Knights Variation, Fianchetto Line is a chess opening classified under ECO code A29 in the Flank Openings family, characterized by moves like 1.c4, 1.Nf3, or 1.f4, aiming to control the center indirectly. It is reached after 5 moves: 1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 5. Nf3 Nc6. The resulting position leaves white to move.