ECO C37
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.
32 named opening lines are classified under ECO code C37.
- King's Gambit Accepted: Australian Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.h4
- King's Gambit Accepted: Blachly Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 Nc6 4.Bc4 g5
- King's Gambit Accepted: Double Muzio Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Qf6 7.e5 Qxe5 8.Bxf7+
- King's Gambit Accepted: Double Muzio Gambit, Baldwin Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Qf6 7.Nc3 Qd4+ 8.Kh1 Qxc4 9.Nd5
- King's Gambit Accepted: Double Muzio Gambit, Bello Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Qf6 7.Nc3
- King's Gambit Accepted: Double Muzio Gambit, Paulsen Defense — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Qf6 7.e5 Qxe5 8.d3 Bh6 9.Nc3 Ne7 10.Bd2 Nbc6 11.Rae1
- King's Gambit Accepted: Double Muzio Gambit, Young Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Qf6 7.Bxf7+ Kxf7 8.d4 Qxd4+ 9.Be3 Qf6 10.Nc3 fxe3
- King's Gambit Accepted: Ghulam-Kassim Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.d4
- King's Gambit Accepted: Kotov Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.d4 gxf3 6.Bxf4
- King's Gambit Accepted: Lolli Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Bxf7+
- King's Gambit Accepted: Lolli Gambit, Young Variation — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Bxf7+ Kxf7 6.O-O gxf3 7.Qxf3 Qf6 8.d4 Qxd4+ 9.Be3 Qf6 10.Nc3
- King's Gambit Accepted: McDonnell Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Nc3
- King's Gambit Accepted: Middleton Countergambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 d6 5.O-O Bg4 6.h3 h5 7.hxg4 hxg4
- King's Gambit Accepted: Muzio Gambit Accepted, From's Defense — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Qe7
- King's Gambit Accepted: Muzio Gambit, Brentano Defense — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O d5
- King's Gambit Accepted: Muzio Gambit, Holloway Defense — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Nc6
- King's Gambit Accepted: Muzio Gambit, Kling and Horwitz Counterattack — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O Qe7
- King's Gambit Accepted: Muzio Gambit, Sarratt Defense — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Qf6
- King's Gambit Accepted: Muzio Gambit, Wild Muzio Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O
- King's Gambit Accepted: Quaade Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Nc3
- King's Gambit Accepted: Rosentreter Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.d4
- King's Gambit Accepted: Rosentreter Gambit, Bird Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.d4 g4 5.Ne5 Qh4+ 6.g3
- King's Gambit Accepted: Rosentreter Gambit, Sörensen Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.d4 g4 5.Nc3
- King's Gambit Accepted: Rosentreter Gambit, Testa Variation — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.d4 g4 5.Bxf4
- King's Gambit Accepted: Salvio Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5
- King's Gambit Accepted: Salvio Gambit, Anderssen Counterattack — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5 Qh4+ 6.Kf1 Nh6 7.d4 d6
- King's Gambit Accepted: Salvio Gambit, Cochrane Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5 Qh4+ 6.Kf1 f3
- King's Gambit Accepted: Salvio Gambit, Santa Maria Defense — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5 Qh4+ 6.Kf1 Nf6
- King's Gambit Accepted: Salvio Gambit, Silberschmidt Defense — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5 Qh4+ 6.Kf1 Nh6
- King's Gambit Accepted: Salvio Gambit, Viennese Variation — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5 Qh4+ 6.Kf1 Nc6
- King's Gambit Accepted: Silberschmidt Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5 Qh4+ 6.Kf1 Nh6 7.d4 f3
- King's Gambit Accepted: Sörensen Gambit — 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.d4 g4 5.Ne5