ECO A81
5 named openings and variations are classified as A81. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Dutch Defense: Blackburne VariationA811. d4 f5 2. g3 Nf6 3. Bg2 e6 4. Nh3
- Dutch Defense: Fianchetto AttackA811. d4 f5 2. g3
- Dutch Defense: Leningrad Variation, Carlsbad VariationA811. d4 f5 2. g3 g6 3. Bg2 Bg7 4. Nh3
- Dutch Defense: Leningrad, Basman SystemA811. d4 f5 2. g3 c6 3. Bg2 g6 4. Nf3 Bg7 5. O-O Nh6
- Dutch Defense: Semi-Leningrad VariationA811. d4 f5 2. g3 Nf6 3. Bg2 g6