Home › Openings › Sicilian Defense › Sicilian Defense: O'Kelly Variation › Sicilian Defense: O'Kelly Variation, Normal System Sicilian Defense: O'Kelly Variation, Normal System, Cortlever Gambit ECO B28 · 1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Bc4 Related variationsSicilian Defense: O'Kelly Variation, Normal System, Smith-Morra LineSicilian Defense: O'Kelly Variation, Normal System, Zagorovsky LineSicilian Defense: O'Kelly Variation, Normal System, Taimanov Line Practice this opening · Play against the computer