ECO B28
20 named openings and variations are classified as B28. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Sicilian Defense: O'Kelly VariationB281. e4 c5 2. Nf3 a6
- Sicilian Defense: O'Kelly Variation, Aronin SystemB281. e4 c5 2. Nf3 a6 3. Be2
- Sicilian Defense: O'Kelly Variation, Kieseritzky SystemB281. e4 c5 2. Nf3 a6 3. b3
- Sicilian Defense: O'Kelly Variation, Maróczy BindB281. e4 c5 2. Nf3 a6 3. c4
- Sicilian Defense: O'Kelly Variation, Maróczy Bind, Paulsen LineB281. e4 c5 2. Nf3 a6 3. c4 e6
- Sicilian Defense: O'Kelly Variation, Maróczy Bind, Robatsch LineB281. e4 c5 2. Nf3 a6 3. c4 d6
- Sicilian Defense: O'Kelly Variation, Normal SystemB281. e4 c5 2. Nf3 a6 3. d4
- Sicilian Defense: O'Kelly Variation, Normal System, Cortlever GambitB281. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Bc4
- Sicilian Defense: O'Kelly Variation, Normal System, Smith-Morra LineB281. e4 c5 2. Nf3 a6 3. d4 cxd4 4. c3
- Sicilian Defense: O'Kelly Variation, Normal System, Taimanov LineB281. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Nxd4 e5
- Sicilian Defense: O'Kelly Variation, Normal System, Zagorovsky LineB281. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Qxd4
- Sicilian Defense: O'Kelly Variation, Quiet SystemB281. e4 c5 2. Nf3 a6 3. d3
- Sicilian Defense: O'Kelly Variation, Réti SystemB281. e4 c5 2. Nf3 a6 3. g3
- Sicilian Defense: O'Kelly Variation, Venice SystemB281. e4 c5 2. Nf3 a6 3. c3
- Sicilian Defense: O'Kelly Variation, Venice System, Barcza LineB281. e4 c5 2. Nf3 a6 3. c3 Nf6
- Sicilian Defense: O'Kelly Variation, Venice System, Gambit LineB281. e4 c5 2. Nf3 a6 3. c3 d5 4. exd5 Nf6
- Sicilian Defense: O'Kelly Variation, Venice System, Ljubojevic LineB281. e4 c5 2. Nf3 a6 3. c3 b5
- Sicilian Defense: O'Kelly Variation, Venice System, Steiner LineB281. e4 c5 2. Nf3 a6 3. c3 d6
- Sicilian Defense: O'Kelly Variation, Wing GambitB281. e4 c5 2. Nf3 a6 3. b4
- Sicilian Defense: O'Kelly Variation, Yerevan SystemB281. e4 c5 2. Nf3 a6 3. Nc3