ECO A09
9 named openings and variations are classified as A09. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Réti OpeningA091. Nf3 d5 2. c4
- Réti Opening: Advance VariationA091. Nf3 d5 2. c4 d4
- Réti Opening: Advance Variation, Michel GambitA091. Nf3 d5 2. c4 d4 3. b4 c5
- Réti Opening: Advance Variation, Navara GambitA091. Nf3 d5 2. c4 d4 3. b4 g5
- Réti Opening: Penguin VariationA091. Nf3 d5 2. c4 d4 3. Rg1
- Réti Opening: Reversed Blumenfeld GambitA091. Nf3 d5 2. c4 d4 3. e3 c5 4. b4
- Réti Opening: Réti AcceptedA091. Nf3 d5 2. c4 dxc4
- Réti Opening: Réti Gambit, Keres VariationA091. Nf3 d5 2. c4 dxc4 3. e3 Be6
- Réti Opening: Zilbermints GambitA091. Nf3 d5 2. c4 b5