Ruy Lopez (C60)

Brentano defense

1. e4 e5 2. Nf3 Nc6 3. Bb5 g5

KGA (C39)

Kieseritsky, Brentano defense

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 d5 6. d4 Nf6 7. Bxf4

KGA (C37)

Muzio gambit, Brentano defense

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. O-O d5

KGA (C39)

Kieseritsky, Brentano (Campbell) defense

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 d5

KGA (C39)

Kieseritsky, Brentano defense, Kaplanek variation

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 d5 6. d4 Nf6 7. exd5 Qxd5 8. Nc3 Bb4 9. Kf2

KGA (C39)

Kieseritsky, Brentano defense, Caro variation

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 d5 6. d4 Nf6 7. Bxf4 Nxe4 8. Nd2

KGA (C36)

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

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

Ruy Lopez (C79)

Steinitz defense deferred (Russian defense)

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

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

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

Alekhine's defense (B03)

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

Two knights defense (C55)

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. O-O

Alekhine's defense (B03)

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

Two knights defense (C56)

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. O-O Nxe4

Two knights defense (C55)

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4

Two knights defense (C55)

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6

Hungarian defense (C50)

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7

Petrov's defense (C42)

1. e4 e5 2. Nf3 Nf6

Owen defense (B00)

1. e4 b6