A01: Nimzovich-Larsen attack, Polish variation

A01 Sub-variants:

• Nimzovich-Larsen attack
  1. b3
• Nimzovich-Larsen attack, modern variation
  1. b3 e5
• Nimzovich-Larsen attack, Indian variation
  1. b3 Nf6
• Nimzovich-Larsen attack, classical variation
  1. b3 d5
• Nimzovich-Larsen attack, English variation
  1. b3 c5
• Nimzovich-Larsen attack, Dutch variation
  1. b3 f5
• Nimzovich-Larsen attack, Polish variation
  1. b3 b5
• Nimzovich-Larsen attack, symmetrical variation
  1. b3 b6