Réti Opening: Zilbermints Gambit is a chess opening with the ECO code A09, part of the Réti Opening family. It goes 1. Nf3 d5 2. c4 b5. White opens with 1. Nf3 (the Zukertort/Réti knight move) and Black answers 1... d5. After 4 moves it is White to move. The lesson on the board explains every move of the line and lets you play it yourself; it is free.
The moves
1. Nf3 – White plays the knight to f3
1... d5 – Black plays the pawn to d5
2. c4 – White plays the pawn to c4
2... b5 – Black plays the pawn to b5
About the Réti Opening
White plays 1.Nf3 and c4, attacking the centre from the side instead of occupying it. It is a modern, flexible approach.
White fianchettoes with g3 and Bg2, sometimes on both sides with b3 and Bb2.
The c4 pawn pressures d5; White may take with cxd5 to open the c-file.
If Black pushes ...d4, White attacks it with e3 or b4.