text: Symmetrical Variation: 1...f5 A03 Bird's Opening, Dutch Variation: 1...d5 (without: 2.d4)
  Mujannah-Sturm Gambit: 2.c4
  Lasker Variation: 2.e3
  Williams Gambit: 2.e4
  A04 Réti Opening or Zukertort Opening: 1.Nf3 (without: 1...Nf6, 1...d5, 1...c6 2.c4, 1...c6 2.d4, 1...c6 2.e4, 1...c6 2.g3 d5, 1...f5 2.c4, 1...f5 2.d4, 1...f5 2.e4 e5, 1...g6 2.c4, 1...g6 2.d4, 1...c5 2.c4, 1...c5 2.e4, 1...Nc6 2.e4, 1...e6 2.c4, 1...e6 2.d4, 1...e6 2.e4, 1...d6 2.c4, 1...d6 2.d4, 1...d6 2.e4, 1...b6 2.c4, 1...e5 2.e4, 1...a6 2.e4 e5)
  A05 Réti Opening: 1...Nf6 (without: 2.c4, 2.d4, 2.Nc3, 2.g3 d5 2.d3 d5)
  A06 Réti Opening: 1...d5
  Santassiere's Folly: 2.b4
  Nimzowitsch–Larsen Attack: 2.b3
  A07 Réti Opening, King's Indian Attack (Barcza System): 1...d5 2.g3
  Keres Variation: 2...Bg4
  Yugoslav Variation: 2...c6
  A08 Réti Opening, King's Indian Attack: 1...d5 2.g3 c5 3.Bg2
  A09 Réti Opening (properly): 1...d5 2.c4 (without: 2...c6, 2...e6)
  Advance Variation: 2...d4
  Advance Variation, Michel Gambit: 2...d4 b4 3. f6
  Accepted: 2...dxc4
  Accepted, Keres Variation: 2...dxc4 3.e3 Be6
  A10–A39
  1.c4: English Opening
  A10: 1.c4 (without: 1...e5, 1...c5, 1...e6, 1...c6, 1...Nf6, 1...g6 2.d4, 1...f5 2.d4, 1...b6 2.d4, 1...d6 2.e4, 1...d6 2.d4, 1...Nc6 2.d4)
  English Anglo-Dutch: 1...f5
  English Vector: 1...d5
  English, Jaenisch Gambit: 1...b5
  A11 English, Caro–Kann defensive system, 1...c6 (without: 2.e4, 2.d4)
  A12 English, Caro–Kann defensive system, 1...c6 2.Nf3 d5 3.b3
  English Bogoljubov Variation: 3...Bg4
  English London Defence: 3...Nf6 4.g3 Bf5