text: and others B01 Scandinavian Defence (Center Counter Defence) 1...d5
  Tennison Gambit 2.Nf3
  Valencian Variation, 3...Qd8
  B02 Alekhine's Defence
  B03 Alekhine's Defence 3.d4
  B04 Alekhine's Defence, Modern Variation
  B05 Alekhine's Defence, Modern Variation, 4...Bg4
  B06 Robatsch (Modern) Defence, including Monkey's Bum
  B07 Pirc Defence
  B08 Pirc, Classical (Two Knights) System
  B09 Pirc, Austrian Attack
  B10 Caro–Kann Defence
  B11 Caro–Kann, Two knights, 3...Bg4
  B12 Caro–Kann Defence
  B13 Caro–Kann, Exchange Variation
  B14 Caro–Kann, Panov–Botvinnik Attack, 5...e6
  B15 Caro–Kann Defence
  B16 Caro–Kann, Bronstein–Larsen Variation
  B17 Caro–Kann, Steinitz Variation, Smyslov Systems
  B18 Caro–Kann, Classical Variation
  B19 Caro–Kann, Classical, 7...Nd7
  B20–B99
  1.e4 c5: Sicilian Defence
  B20 Sicilian Defence, (any move for white without 2.Nc3 (B23–B26), 2.c3 (B22), 2.f4 (B21) and 2.Nf3 (B27–B99))
  Smith–Morra Gambit, 2.d4 (without 2...e6 (C00) and 2.d4 cxd4 3.c3 g6 (B22)) with Siberian Trap 2.d4 cxd4 3.c3 dxc3...
  Sicilian Smith–Morra Morphy Gambit, 2.d4 cxd4 3.Nf3 (without 3...Nc6 (B32), 3...e6 (B40), 3...d6 (B53), 3...a6 4.Nxd4 (B28))
  Sicilian Halasz Gambit, 2.d4 cxd4 3.f4
  B21 Sicilian, Grand Prix Attack, 2.f4 (without 2...e5 (C30))
  B22 Sicilian, Alapin Variation, 2.c3 (without 2...d6 3.Nf3 (C50), 2...e6 3.Nf3 d5 (B40), 2...e6 3.d4 d5 4.e5 (C02), 2...g6 3.Nf3 (B27))
  B23 Sicilian, Closed, 2.Nc3 (without 2...a6 3.Nf3 (B28), 2...d6 3.Nf3 (B50), 2...Nc6 3.g3 (B24–B26))
  B24 Sicilian, Closed, 2.Nc3 Nc6 3.g3 (without 3...g6 (B25–B26))