KP (B00)

Colorado counter

1. e4 Nc6 2. Nf3 f5

KGD (C31)

Falkbeer counter-gambit

1. e4 e5 2. f4 d5 3. exd5

KGD (C31)

Falkbeer counter-gambit

1. e4 e5 2. f4 d5

QGD (D08)

Albin counter-gambit

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3

KGD (C31)

Nimzovich counter-gambit

1. e4 e5 2. f4 d5 3. exd5 c6

Ponziani counter-gambit (C44)

1. e4 e5 2. Nf3 Nc6 3. c3 f5

QGD (D08)

Albin counter-gambit

1. d4 d5 2. c4 e5

KGA (C34)

Gianutio counter-gambit

1. e4 e5 2. f4 exf4 3. Nf3 f5

Evans counter-gambit (C51)

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 d5

Latvian counter-gambit (C40)

1. e4 e5 2. Nf3 f5

KGD (C30)

Classical counter-gambit

1. e4 e5 2. f4 Bc5 3. Nf3 d6 4. c3 f5

QGD (D09)

Albin counter-gambit, 5.g3

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3

Blumenfeld counter-gambit (E10)

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5

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

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

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 (C48)

Rubinstein counter-gambit

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4

Scandinavian (B01)

Anderssen counter-attack

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

Scandinavian (centre counter) defense (B01)

1. e4 d5

Latvian (C40)

corkscrew counter-gambit

1. e4 e5 2. Nf3 f5 3. Bc4 fxe4 4. Nxe5 Nf6