ECO B09
7 named openings and variations are classified as B09. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Pirc Defense: Austrian AttackB091. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4
- Pirc Defense: Austrian Attack, Dragon FormationB091. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 c5
- Pirc Defense: Austrian Attack, Kurajica VariationB091. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. Be3
- Pirc Defense: Austrian Attack, Ljubojevic VariationB091. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Bc4
- Pirc Defense: Austrian Attack, Unzicker AttackB091. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. e5
- Pirc Defense: Austrian Attack, Unzicker Attack, Bronstein VariationB091. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. e5 Nfd7 7. h4
- Pirc Defense: Austrian Attack, Weiss VariationB091. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. Bd3