English Opening: Agincourt Defense, Neo-Catalan Declined

The English Opening: Agincourt Defense, Neo-Catalan Declined is a chess opening classified under ECO code A14 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 6 moves: 1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. c4 O-O 6. b3 c5. The resulting position leaves white to move.