White has many variations in the Closed Sicilian. He can play a late f4 with Grand Prix-like play, fianchetto the bishop on g3 to get into a Reti opening structure or even play a closed Guioco Piano, etc. You must look at all possible options and make sure you find decent moves corresponding to your chosen move order.
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Usually though, apart from the Gand Prix which can be quite violent if black allows White to launch a King side attack, white doesn’t achieve much unless he opens the center.