Four knights (C49)

Gunsberg counter-attack

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. Nd5 Nxd5 7. exd5 e4

Four knights (C46)

Gunsberg variation

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. a3

Scotch (C45)

Paulsen, Gunsberg defense

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Nge7 7. Bb5 Nd8

Scandinavian (B01)

Anderssen counter-attack Orthodox attack

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5 5. dxe5 Bb4 6. Bd2 Nc6 7. Nf3

Ruy Lopez (C88)

Trajkovic counter-attack

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 Bb7

Scotch (C45)

Pulling counter-attack

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4

Ponziani (C44)

Jaenisch counter-attack

1. e4 e5 2. Nf3 Nc6 3. c3 Nf6

Ruy Lopez (C89)

Marshall counter-attack, 11...c6

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6

Ruy Lopez (C89)

Marshall counter-attack

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d5

Scandinavian (B01)

Anderssen counter-attack

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5

Ponziani counter-gambit, Schmidt attack (C44)

1. e4 e5 2. Nf3 Nc6 3. c3 f5 4. d4 d6 5. d5

Caro-Kann (B15)

Gurgenidze counter-attack

1. e4 c6 2. d4 d5 3. Nc3 b5

KGA (C37)

Salvio gambit, Anderssen counter-attack

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. Ne5 Qh4+ 6. Kf1 Nh6 7. d4 d6

Bishop's Opening (C23)

Philidor counter-attack

1. e4 e5 2. Bc4 c6

KGA (C37)

Muzio gambit, Kling and Horwitz counter-attack

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. O-O Qe7

Scandinavian (B01)

Anderssen counter-attack, Goteborg system

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5 5. Nf3

Scandinavian (B01)

Anderssen counter-attack, Collijn variation

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5 5. Nf3 Bg4

Scotch gambit (C44)

Anderssen (Paulsen, Suhle) counter-attack

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Bc5 5. O-O d6 6. c3 Bg4

Sicilian (B40)

Pin variation (Sicilian counter-attack)

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4

Philidor (C41)

Philidor counter-gambit, del Rio attack

1. e4 e5 2. Nf3 d6 3. d4 f5 4. dxe5 fxe4 5. Ng5 d5 6. e6