English (A10)

Adorjan defense

1. c4 g6 2. e4 e5

Nimzo-Indian (E32)

Classical, Adorjan gambit

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 b5

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

QGD (D32)

Tarrasch defense

1. d4 d5 2. c4 e6 3. Nc3 c5

Philidor's defense (C41)

1. e4 e5 2. Nf3 d6

Alekhine's defense (B03)

1. e4 Nf6 2. e5 Nd5 3. d4

QGD (D32)

Tarrasch defense, 4.cd ed

1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5

QGA (D22)

Alekhine defense

1. d4 d5 2. c4 dxc4 3. Nf3 a6

Guatemala defense (B00)

1. e4 b6 2. d4 Ba6

Alekhine's defense (B03)

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

QGA (D20)

Schwartz defense

1. d4 d5 2. c4 dxc4 3. e4 f5

Alekhine's defense (B03)

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

Damiano's defense (C40)

1. e4 e5 2. Nf3 f6

QGD Slav defense (D10)

1. d4 d5 2. c4 c6

Greco defense (C40)

1. e4 e5 2. Nf3 Qf6

QGD (D07)

Chigorin defense

1. d4 d5 2. c4 Nc6