Greco defense (C40)

1. e4 e5 2. Nf3 Qf6

KGA (C38)

Greco gambit

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. h4 h6 6. d4 d6 7. Nc3 c6 8. hxg5 hxg5 9. Rxh8 Bxh8 10. Ne5

KGA (C33)

Bishop's gambit, Greco variation

1. e4 e5 2. f4 exf4 3. Bc4 Qh4+ 4. Kf1 Bc5

Bishop's Opening (C24)

Greco gambit

1. e4 e5 2. Bc4 Nf6 3. f4

Giuoco Piano (C54)

Greco variation

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Nxc3

KGA (C36)

Abbazia defense (Classical defense, Modern defense[!])

1. e4 e5 2. f4 exf4 3. Nf3 d5

Two knights defense (C57)

Fegatello attack, Polerio defense

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Nxd5 6. Nxf7 Kxf7 7. Qf3+ Ke6 8. Nc3 Ne7

Ruy Lopez (C79)

Steinitz defense deferred (Russian defense)

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O d6

Three knights (C46)

Winawer defense (Gothic defense)

1. e4 e5 2. Nf3 Nc6 3. Nc3 f5

Alekhine's defense (B02)

Brooklyn defense

1. e4 Nf6 2. e5 Ng8

QGD Slav defense (D10)

1. d4 d5 2. c4 c6

Sicilian defense (B27)

1. e4 c5 2. Nf3

Alekhine's defense (B03)

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4

QGD (D07)

Chigorin defense

1. d4 d5 2. c4 Nc6

de Bruycker defense (B12)

1. e4 c6 2. d4 Na6 3. Nc3 Nc7

Pirc defense (B07)

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be2

QGD (D06)

Marshall defense

1. d4 d5 2. c4 Nf6

Pirc defense (B07)

1. e4 d6 2. d4 Nf6 3. Nc3 g6

Sicilian defense (B20)

1. e4 c5

Norwegian defense (B06)

1. e4 g6 2. d4 Nf6 3. e5 Nh5 4. g4 Ng7