1. e4 c5 2. Bc4?! e6 3. Nc3 Ne7 4. d3 d5! (taking the center from White while attacking the Bishop.)
1. e4 c5 2. Bc4?! e6 3. Nf3 d5! (The critical move again, this time against an Italian structure.)
Although you don’t have to play these exact move orders, the main idea is an e6-d5 push for the center, ideally with a knight to support the d5-square. Because the early bishop is misplaced on c4, Black gains a tempo with this maneuver. If he decides to trade pawns, he may also attempt to trade his light squared bishop for your light squared bishop. This is good, because generally White’s light squared bishop is better than Black’s light squared bishop.
Hope this helps!
It seems that literally everyone nowadays counters the Sicilian with the Bowdler, and I'm slightly confused as to why. What happened to the Open or the Closed Sicilian lines? Has the Bowdler been analytically proven to be better for white? (Note that I am playing in 1000-1400ish levels, but I'm still quite confused. Is this sudden descent of the Bowdler upon everybody's opening repertoire singular to this rating section? Or is it a sudden fashion of the entire chess community?)