Petrov (C43)

Modern attack, Bardeleben variation

1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qe2 Nc5 6. Nxd4 Nc6

Four knights (C48)

Bardeleben variation

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5 5. O-O O-O 6. Nxe5 Nxe5 7. d4 Bd6 8. f4 Nc6 9. e5 Bb4

Vienna gambit (C29)

Bardeleben variation

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Qf3 f5

Scotch (C44)

Goering gambit, Bardeleben variation

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. c3 dxc3 5. Nxc3 Bb4 6. Bc4 Nf6

Petrov (C43)

Modern attack, Steinitz variation

1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qe2

Petrov (C43)

Modern attack, Symmetrical variation

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4

Petrov (C43)

Modern attack, Trifunovic variation

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Bd6 6. O-O O-O 7. c4 Bxe5

Nimzovich-Larsen attack (A01)

Modern variation

1. b3 e5

Petrov (C43)

Modern (Steinitz) attack

1. e4 e5 2. Nf3 Nf6 3. d4

Alekhine's defense (B05)

Modern, Vitolins attack

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. c4 Nb6 6. d5

Petrov (C43)

Modern attack, Main line

1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qxd4

Alekhine's defense (B05)

Modern variation, 4...Bg4

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4

Gruenfeld (D85)

Modern Exchange variation

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3

KGA (C36)

Abbazia defense, Modern variation

1. e4 e5 2. f4 exf4 3. Nf3 d5 4. exd5 Nf6

Alekhine's defense (B04)

Modern variation

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3

Sicilian (B35)

Accelerated Fianchetto, Modern variation with Bc4

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4

Alekhine's defense (B05)

Modern, Panov variation

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. h3

Sicilian (B34)

Accelerated Fianchetto, Modern variation

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3

Alekhine's defense (B04)

Modern, Larsen variation

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 dxe5

Alekhine's defense (B04)

Modern, Fianchetto variation

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6