ECO D05
5 named openings and variations are classified as D05. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Queen's Pawn Game: Colle System, Traditional ColleD051. d4 Nf6 2. Nf3 e6 3. e3 c5 4. Bd3 d5 5. c3
- Rubinstein OpeningD051. d4 Nf6 2. Nf3 e6 3. e3 c5 4. Bd3 d5 5. b3
- Rubinstein Opening: Bogoljubow DefenseD051. d4 Nf6 2. Nf3 e6 3. e3 c5 4. Bd3 d5 5. b3 Nc6 6. O-O Bd6 7. Bb2 O-O
- Rubinstein Opening: Classical DefenseD051. d4 Nf6 2. Nf3 e6 3. e3 c5 4. Bd3 d5 5. b3 Nc6 6. O-O Be7 7. Bb2 O-O
- Rubinstein Opening: Semi-Slav DefenseD051. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 Bd6 5. O-O O-O 6. b3 Nbd7 7. Bb2