Sicilian Defense: O'Kelly Variation, Kieseritzky System

1.
1. e4
2. c5
2.
3. Nf3
4. a6
3.
5. b3

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The Sicilian Defense: O'Kelly Variation, Kieseritzky System is a chess opening classified under ECO code B28 (Semi-Open games). It is a variation of the Sicilian Defense family. Step through the moves on the board above, then play the line yourself or review it with the built-in engine.