ECO C47
ECO C00–C99 — Open Games and the French Defense: 1.e4 e6 and 1.e4 e5, from the Italian and Ruy Lopez to the King's Gambit.
19 named opening lines are classified under ECO code C47.
- Four Knights Game — 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6
- Four Knights Game: Glek System — 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.g3
- Four Knights Game: Gunsberg Variation — 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.a3
- Four Knights Game: Gunsberg Variation, Provincial Opening — 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.a3 d6 5.h3
- Four Knights Game: Halloween Gambit — 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Nxe5
- Four Knights Game: Halloween Gambit, Oldtimer Variation — 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Nxe5 Nxe5 5.d4 Ng6 6.e5 Ng8 7.Bc4 Bb4 8.Qf3 f5
- Four Knights Game: Halloween Gambit, Plasma Variation — 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Nxe5 Nxe5 5.d4 Nc6 6.d5 Ne5 7.f4 Ng6 8.e5 Ng8 9.d6 cxd6 10.exd6 Qf6 11.Nb5 Rb8
- Four Knights Game: Italian Variation — 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3
- Four Knights Game: Italian Variation, Noa Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 Nxe4 5.Bxf7+
- Four Knights Game: Naroditsky Variation — 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Nd5
- Four Knights Game: Scotch Variation — 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4
- Four Knights Game: Scotch Variation Accepted — 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4
- Four Knights Game: Scotch Variation Accepted, Main Line — 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nxd4 Bb4 6.Nxc6 bxc6 7.Bd3 d5 8.exd5 O-O 9.O-O
- Four Knights Game: Scotch Variation, Belgrade Gambit — 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nd5
- Four Knights Game: Scotch Variation, Belgrade Gambit, Modern Defense — 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nd5 Nxe4 6.Qe2 f5
- Four Knights Game: Scotch Variation, Krause Gambit — 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 Bb4 5.Nxe5
- Four Knights Game: Scotch Variation, Krause Gambit, Leonhardt Defense — 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 Bb4 5.Nxe5 Qe7
- Four Knights Game: Scotch Variation, Oxford Gambit — 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 Bb4 5.d5 Nd4
- Four Knights Game: Scotch Variation, Schmid Defense — 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nxd4 Nxe4