ECO C03
6 named openings and variations are classified as C03. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- French Defense: Tarrasch VariationC031. e4 e6 2. d4 d5 3. Nd2
- French Defense: Tarrasch Variation, Guimard DefenseC031. e4 e6 2. d4 d5 3. Nd2 Nc6
- French Defense: Tarrasch Variation, Guimard Defense, Thunderbunny VariationC031. e4 e6 2. d4 d5 3. Nd2 Nc6 4. c3 dxe4 5. Nxe4 e5
- French Defense: Tarrasch Variation, Haberditz VariationC031. e4 e6 2. d4 d5 3. Nd2 f5
- French Defense: Tarrasch Variation, Modern SystemC031. e4 e6 2. d4 d5 3. Nd2 a6
- French Defense: Tarrasch Variation, Morozevich VariationC031. e4 e6 2. d4 d5 3. Nd2 Be7