ECO C43
11 named openings and variations are classified as C43. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Bishop's Opening: Urusov GambitC431. e4 e5 2. Bc4 Nf6 3. d4 exd4 4. Nf3
- Bishop's Opening: Urusov Gambit, Keidansky GambitC431. e4 e5 2. Bc4 Nf6 3. d4 exd4 4. Nf3 Nxe4 5. Qxd4
- Petrov's Defense: Modern AttackC431. e4 e5 2. Nf3 Nf6 3. d4
- Petrov's Defense: Modern Attack, Bardeleben VariationC431. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qe2 Nc5 6. Nxd4 Nc6
- Petrov's Defense: Modern Attack, Center AttackC431. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qxd4
- Petrov's Defense: Modern Attack, Center VariationC431. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3
- Petrov's Defense: Modern Attack, Murrey VariationC431. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 Nc6
- Petrov's Defense: Modern Attack, Steinitz VariationC431. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qe2
- Petrov's Defense: Modern Attack, Symmetrical VariationC431. e4 e5 2. Nf3 Nf6 3. d4 d5
- Petrov's Defense: Modern Attack, Tal GambitC431. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Bb5
- Petrov's Defense: Modern Attack, Trifunovic VariationC431. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Bd6 6. O-O O-O 7. c4 Bxe5