Ruy Lopez (C60)

Cozio defense

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7

Ruy Lopez (C70)

Cozio defense deferred

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nge7

KGA (C33)

Bishop's gambit, Cozio (Morphy) defense

1. e4 e5 2. f4 exf4 3. Bc4 Nf6

Ruy Lopez (C60)

Cozio defense, Paulsen variation

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. Nc3 g6

KGA (C39)

Kieseritsky, Salvio defense, Cozio variation

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 Qe7 6. d4 f5 7. Bc4

KGA (C33)

Bishop's gambit, Classical defense, Cozio attack

1. e4 e5 2. f4 exf4 3. Bc4 Qh4+ 4. Kf1 g5 5. Qf3

Petrov (C42)

Cozio (Lasker) attack

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Qe2

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

Sicilian defense (B32)

1. e4 c5 2. Nf3 Nc6 3. d4

QGD (D07)

Chigorin defense

1. d4 d5 2. c4 Nc6

QGD (D06)

Marshall defense

1. d4 d5 2. c4 Nf6

Sicilian defense (B30)

1. e4 c5 2. Nf3 Nc6

Sicilian defense (B27)

1. e4 c5 2. Nf3

Sicilian defense (B20)

1. e4 c5

de Bruycker defense (B12)

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

Norwegian defense (B06)

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