C48: Four knights, Spanish variation

C48 Sub-variants:

• Four knights, Spanish variation
  1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5
• Four knights, Ranken variation
  1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 a6 5. Bxc6
• Four knights, Spielmann variation
  1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 a6 5. Bxc6 dxc6 6. Nxe5 Nxe4 7. Nxe4 Qd4 8. O-O Qxe5 9. Re1 Be6 10. d4 Qd5
• Four knights, Spanish, classical defence
  1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5
• Four knights, Bardeleben variation
  1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5 5. O-O O-O 6. Nxe5 Nxe5 7. d4 Bd6 8. f4 Nc6 9. e5 Bb4
• Four knights, Marshall variation
  1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5 5. O-O O-O 6. Nxe5 Nd4
• Four knights, Rubinstein counter-gambit
  1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4
• Four knights, Rubinstein counter-gambit, Bogolyubov variation
  1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. Nxe5 Qe7 6. f4
• Four knights, Rubinstein counter-gambit, 5.Be2
  1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. Be2
• Four knights, Rubinstein counter-gambit Maroczy variation
  1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. Be2 Nxf3+ 6. Bxf3 Bc5 7. O-O O-O 8. d3 d6 9. Na4 Bb6
• Four knights, Rubinstein counter-gambit, exchange variation
  1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. Nxd4
• Four knights, Rubinstein counter-gambit, Henneberger variation
  1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. O-O