Four knights (C48)

Rubinstein counter-gambit, Henneberger variation

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. O-O

Sicilian (B29)

Nimzovich-Rubinstein; Rubinstein counter-gambit

1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. Nc3 e6 5. Nxd5 exd5 6. d4 Nc6

Four knights (C48)

Rubinstein counter-gambit

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

Four knights (C48)

Rubinstein counter-gambit, 5.Be2

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. Be2

Four knights (C48)

Rubinstein counter-gambit, Bogolyubov variation

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. Nxe5 Qe7 6. f4

Four knights (C48)

Rubinstein counter-gambit, Exchange variation

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. Nxd4

Four knights (C48)

Rubinstein counter-gambit Maroczy variation

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. Be2 Nxf3+ 6. Bxf3 Bc5 7. O-O O-O 8. d3 d6 9. Na4 Bb6

French (C11)

Henneberger variation

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Be3

QGD (D63)

Orthodox defense, Swiss (Henneberger) variation

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 a6

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

Blumenfeld counter-gambit, Spielmann variation (E10)

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

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

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

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

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

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

KGD (C31)

Nimzovich counter-gambit

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