(C23) Calabrian
1. e4 e5 2. Bc4 f5
(C23) Calabrian (Jaenisch)
1. e4 e5 2. Bc4 f5 3. d3
(C23) Philidor Counter-Attack
1. e4 e5 2. Bc4 c6
(C23) Philidor Counter-Attack (Lisitsin)
1. e4 e5 2. Bc4 c6 3. d4 d5 4. exd5 cxd5 5. Bb5+ Bd7 6. Bxd7+ Nxd7 7. dxe5 Nxe5 8. Ne2
(C23) Classical
1. e4 e5 2. Bc4 Bc5
(C23) Classical (Lewis)
1. e4 e5 2. Bc4 Bc5 3. d4
(C23) Classical (Lopez)
1. e4 e5 2. Bc4 Bc5 3. Qe2 Nc6 4. c3 Nf6 5. f4
(C23) Classical (Petrov)
1. e4 e5 2. Bc4 Bc5 3. Nf3 d6 4. c3 Qe7 5. d4
(C23) Wing Gambit
1. e4 e5 2. Bc4 Bc5 3. b4
(C23) Wing Gambit (McDonnell)
1. e4 e5 2. Bc4 Bc5 3. b4 Bxb4 4. f4
(C23) Wing Gambit (Four Pawns)
1. e4 e5 2. Bc4 Bc5 3. b4 Bxb4 4. f4 exf4 5. Nf3 Be7 6. d4 Bh4+ 7. g3 fxg3 8. O-O gxh2+ 9. Kh1
(C23) Philidor
1. e4 e5 2. Bc4 Bc5 3. c3
(C23) Philidor (del Rio)
1. e4 e5 2. Bc4 Bc5 3. c3 Qg5
(C23) Philidor (Lewis)
1. e4 e5 2. Bc4 Bc5 3. c3 d5
(C23) Philidor (Pratt)
1. e4 e5 2. Bc4 Bc5 3. c3 Nf6 4. d4 exd4 5. e5 d5 6. exf6 dxc4 7. Qh5 O-O