A09 — Réti Opening

Flank & English openings (A00–A99)

ECO A09 covers Réti Opening and related lines (Réti Opening, Réti Opening: Advance Variation, Réti Opening: Réti Accepted, Réti Opening: Zilbermints Gambit). Main line 1. Nf3 d5 2. c4 with variations, statistics, and the best responses.

9 lines under A09
Réti Opening
1. Nf3 d5 2. c4
Réti Opening: Réti Accepted
1. Nf3 d5 2. c4 dxc4
Réti Opening: Penguin Variation
1. Nf3 d5 2. c4 d4 3. Rg1
Réti Opening: Réti Gambit, Keres Variation
1. Nf3 d5 2. c4 dxc4 3. e3 Be6
Réti Opening: Reversed Blumenfeld Gambit
1. Nf3 d5 2. c4 d4 3. e3 c5 4. b4