Ponziani (C44)

Jaenisch counter-attack

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

Philidor (C41)

Lopez counter-gambit, Jaenisch variation

1. e4 e5 2. Nf3 d6 3. Bc4 f5 4. d4 exd4 5. Ng5 Nh6 6. Nxh7

Bishop's Opening (C23)

Calabrese counter-gambit, Jaenisch variation

1. e4 e5 2. Bc4 f5 3. d3

Petrov (C42)

Classical attack, Jaenisch variation

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O Nc6 8. c4

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

English (A10)

Jaenisch gambit

1. c4 b5

KGA (C33)

Bishop's gambit, Jaenisch variation

1. e4 e5 2. f4 exf4 3. Bc4 Nf6 4. Nc3 c6

Philidor (C41)

Nimzovich (Jaenisch) variation

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

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

Scandinavian (B01)

Anderssen counter-attack

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

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

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

Scotch (C45)

Pulling counter-attack

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

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

KGA (C33)

Lesser Bishop's (Petroff-Jaenisch-Tartakower) gambit

1. e4 e5 2. f4 exf4 3. Be2

KGA (C39)

Kieseritsky, long whip defense, Jaenisch variation

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 h5 6. Bc4 Rh7 7. d4 Bh6 8. Nc3

Caro-Kann (B15)

Gurgenidze counter-attack

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

Ponziani counter-gambit, Schmidt attack (C44)

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

Bishop's Opening (C23)

Philidor counter-attack

1. e4 e5 2. Bc4 c6

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