E11: Bogo-Indian defence

E11 Sub-variants:

• Bogo-Indian defence
  1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+
• Bogo-Indian defence, Gruenfeld variation
  1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2
• Bogo-Indian defence, Nimzovich variation
  1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Qe7
• Bogo-Indian defence, Monticelli trap
  1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Bxd2+ 5. Qxd2 b6 6. g3 Bb7 7. Bg2 O-O 8. Nc3 Ne4 9. Qc2 Nxc3 10. Ng5