Chess Opening Theory/1. e4/1...c5/2. f4

= Sicilian - Grand Prix Attack = 2. f4, with the idea of an aggressive attack against the Black King. Black can neutralise the threat with an immediate d5; for this reason the attack is often played in the move order 2. Nc3 followed with f4.

Theory table
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1.e4 c5 2.f4