Blumenfeld counter-gambit, Dus-Chotimursky variation (E10)

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5 5. Bg5

Blumenfeld counter-gambit (E10)

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

Blumenfeld counter-gambit, Spielmann variation (E10)

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5 5. Bg5 exd5 6. cxd5 h6

Blumenfeld counter-gambit accepted (E10)

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5 5. dxe6 fxe6 6. cxb5 d5

QGD Semi-Slav (D49)

Meran, Blumenfeld variation

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 a6 9. e4 c5 10. e5 cxd4 11. Nxb5

Scotch (C45)

Blumenfeld attack

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. Nb5

KGA (C33)

Bishop's gambit, Lopez-Gianutio counter-gambit

1. e4 e5 2. f4 exf4 3. Bc4 f5

KGA (C33)

Bishop's gambit, Bryan counter-gambit

1. e4 e5 2. f4 exf4 3. Bc4 b5

KGA (C33)

Bishop's gambit, Bryan counter-gambit

1. e4 e5 2. f4 exf4 3. Bc4 Qh4+ 4. Kf1 b5

QGD (D08)

Albin counter-gambit, Balogh variation

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. Nbd2 Qe7

QGD (D08)

Albin counter-gambit, Janowski variation

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. Nbd2 f6

QGD (D08)

Albin counter-gambit, Krenosz variation

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. Nbd2 Bg4 6. h3 Bxf3 7. Nxf3 Bb4+ 8. Bd2 Qe7

QGD (D08)

Albin counter-gambit, Alapin variation

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. Nbd2

Ponziani counter-gambit, Cordel variation (C44)

1. e4 e5 2. Nf3 Nc6 3. c3 f5 4. d4 d6 5. d5 fxe4 6. Ng5 Nb8 7. Nxe4 Nf6 8. Bd3 Be7

KGD (C30)

Classical counter-gambit

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

Ponziani counter-gambit (C44)

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

KGD (C31)

Falkbeer counter-gambit

1. e4 e5 2. f4 d5 3. exd5

KGD (C31)

Nimzovich counter-gambit

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

QGD (D09)

Albin counter-gambit, 5.g3

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

KGA (C34)

Gianutio counter-gambit

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