ECO A05
10 named openings and variations are classified as A05. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- King's Indian Attack: Smyslov VariationA051. Nf3 Nf6 2. g3 g6 3. b4
- King's Indian Attack: Spassky VariationA051. Nf3 Nf6 2. g3 b5
- King's Indian Attack: Symmetrical DefenseA051. Nf3 Nf6 2. g3 g6
- King's Indian Attack: Wahls DefenseA051. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d3 d5
- Polish Opening: Zukertort SystemA051. Nf3 Nf6 2. b4 g6 3. Bb2
- Zukertort Opening: Double Fianchetto AttackA051. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 O-O 5. Bg2 d6 6. O-O
- Zukertort Opening: Lemberger GambitA051. Nf3 Nf6 2. e4
- Zukertort Opening: Myers Polish AttackA051. Nf3 Nf6 2. a4 g6 3. b4
- Zukertort Opening: Nimzo-Larsen VariationA051. Nf3 Nf6 2. b3
- Zukertort Opening: Quiet SystemA051. Nf3 Nf6 2. e3