A52: Budapest, Rubinstein variation

A52 Sub-variants:

• Budapest defence
  1. d4 Nf6 2. c4 e5 3. dxe5 Ng4
• Budapest, Adler variation
  1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3
• Budapest, Rubinstein variation
  1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4
• Budapest, Alekhine variation
  1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4
• Budapest, Alekhine, Abonyi variation
  1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6
• Budapest, Alekhine variation, Balogh gambit
  1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 d6