Réti Opening: Anglo-Slav Variation, Gurevich System

The Réti Opening: Anglo-Slav Variation, Gurevich System is a chess opening classified under ECO code A11 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 c6 2. Nf3 d5 3. e3 Nf6 4. Nc3 Nbd7 5. b3 e5. The resulting position leaves white to move.