ECO D24
3 named openings and variations are classified as D24. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Queen's Gambit Accepted: Bogoljubow DefenseD241. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 a6 5. e4
- Queen's Gambit Accepted: Gunsberg Defense, Prianishenmo GambitD241. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 c5 5. d5 e6 6. e4 exd5 7. e5
- Queen's Gambit Accepted: Showalter VariationD241. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3