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In the meantime Sicilian opening theory has grown so much that many players seek refuge in sub-variations. Whether with the Morra Gambit (2.d4), the Grand Prix Attack (2.f4) or the Closed Sicilian (2.Nc3), White has many interesting possibilities. But Black too can flee after the main move 2.Nf3 into variations which involve much less theory, one of these being the O'Kelly Variation 2...a6!?