C22: Centre game

C22 Sub-variants:

• Centre game
  1. e4 e5 2. d4 exd4 3. Qxd4 Nc6
• Centre game, Paulsen attack
  1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3
• Centre game, Charousek variation
  1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 Bb4+ 5. c3 Be7
• Centre game, l'Hermet variation
  1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 f5
• Centre game, Berger variation
  1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 Nf6
• Centre game, Kupreichik variation
  1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 Nf6 5. Nc3 Bb4 6. Bd2 O-O 7. O-O-O Re8 8. Bc4 d6 9. Nh3
• Centre game, Hall variation
  1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qc4