ECO D45
9 named openings and variations are classified as D45. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Semi-Slav Defense: Accelerated Meran VariationD451. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 a6
- Semi-Slav Defense: Main LineD451. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3
- Semi-Slav Defense: Normal VariationD451. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Nbd7
- Semi-Slav Defense: Rubinstein SystemD451. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 Nf6 5. e3 Nbd7 6. Ne5
- Semi-Slav Defense: Stoltz VariationD451. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Qc2
- Semi-Slav Defense: Stoltz Variation, Center VariationD451. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. e4
- Semi-Slav Defense: Stoltz Variation, Center Variation, Mikhalchishin LineD451. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. e4 dxe4 8. Nxe4 Nxe4 9. Qxe4 e5 10. dxe5
- Semi-Slav Defense: Stoltz Variation, Shabalov AttackD451. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. g4
- Semi-Slav Defense: Stonewall DefenseD451. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 e6 5. e3 Ne4 6. Bd3 f5