Bishop's Opening (C23)

Calabrese counter-gambit, Jaenisch variation

1. e4 e5 2. Bc4 f5 3. d3

Bishop's Opening (C23)

Calabrese counter-gambit

1. e4 e5 2. Bc4 f5

Philidor (C41)

Lopez counter-gambit, Jaenisch variation

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

Ponziani (C44)

Jaenisch counter-attack

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

KGA (C33)

Bishop's gambit, Jaenisch variation

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

English (A10)

Jaenisch gambit

1. c4 b5

KGA (C33)

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

1. e4 e5 2. f4 exf4 3. Be2

Philidor (C41)

Nimzovich (Jaenisch) variation

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

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

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

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 Qh4+ 4. Kf1 b5

KGA (C33)

Bishop's gambit, Bryan counter-gambit

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

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

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

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, Alapin variation

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

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