ECO A51
5 named openings and variations are classified as A51. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Indian Defense: Budapest GambitA511. d4 Nf6 2. c4 e5
- Indian Defense: Budapest Gambit AcceptedA511. d4 Nf6 2. c4 e5 3. dxe5
- Indian Defense: Budapest Gambit Accepted, Fajarowicz DefenseA511. d4 Nf6 2. c4 e5 3. dxe5 Ne4
- Indian Defense: Budapest Gambit Accepted, Fajarowicz Defense, Bonsdorf VariationA511. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. a3
- Indian Defense: Budapest Gambit Accepted, Fajarowicz Defense, Steiner VariationA511. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Qc2