text: C40 King's Knight Opening (includes Gunderam Defence, Brazilian Defence, Greco Defence, Damiano Defence, Elephant Gambit, and Latvian Gambit.)
  C41 Philidor Defence
  C42 Petrov's Defence, including Marshall Trap
  C43 Petrov's Defence, Modern (Steinitz) Attack
  C44 King's Pawn Game (includes Ponziani Opening, Inverted Hungarian Opening, Irish Gambit, Konstantinopolsky Opening and some Scotch Game)
  C45 Scotch Game
  C46 Three Knights Game including Halloween Gambit
  C47 Four Knights Game
  C48 Four Knights Game, Spanish Variation
  C49 Four Knights Game, Double Ruy Lopez
  C50 Italian Game (includes Blackburne Shilling Gambit, Hungarian Defence, Semi-Italian Opening, Italian Gambit, Légal Trap, Rousseau Gambit, Koltanowski Gambit and Giuoco Pianissimo)
  C51 Evans Gambit
  C52 Evans Gambit with 4...Bxb4 5.c3 Ba5
  C53 Giuoco Piano
  C54 Giuoco Piano
  C55 Two Knights Defence
  C56 Two Knights Defence
  C57 Two Knights Defence, including the Fried Liver Attack
  C58 Two Knights Defence
  C59 Two Knights Defence
  C60 Ruy Lopez Unusual Black 3rd moves and 3...g6
  C61 Ruy Lopez, Bird's Defence
  C62 Ruy Lopez, Old Steinitz Defence
  C63 Ruy Lopez, Schliemann Defence
  C64 Ruy Lopez, Classical (Cordel) Defence
  C65 Ruy Lopez, Berlin Defence including Mortimer Trap
  C66 Ruy Lopez, Berlin Defence, 4.0-0 d6
  C67 Ruy Lopez, Berlin Defence, Open Variation
  C68 Ruy Lopez, Exchange Variation
  C69 Ruy Lopez, Exchange Variation, 5.0-0