Sicilian Defense: O'Kelly Variation, Aronin System

1.e4 c5 2.Nf3 a6 3.Be2

ECO B28

The Sicilian Defense: O'Kelly Variation, Aronin System is a chess opening line in the Sicilian Defense complex, reached after 1.e4 c5 2.Nf3 a6 3.Be2.

It is catalogued under code B28 in the Encyclopaedia of Chess Openings (ECO).

The defining move Be2 is chosen by White on move 3.

Do you want to learn openings?

Start with a GM-authored repertoire you study move by move, then practice against a human-like AI opponent:

• Catalan Opening
• King's Indian Defense with ...e5

Every chess term used here is defined in the chess terms glossary. Browse all opening courses or the full ECO code index.