Post your best miniatures here
Isn't that a well-known trap?
I would imagine so. But apparently, not everyone knows it.

Robhad
I would be tempted, after 3.e5 c5, to play 4.Nf3, turning the opening to a Grand Prix Sicilian, where White's pawn on e5 may or may nor be an advantage. But I would love to play it from the White side..
Isn't the Grand Prix defined by f4? After white plays 4. Nf3, the position hardly resembles a Sicilian Grand Prix, unless you meant 4. f4, which still has some differences, namely that white has already played d4 whereas usually Nc3 and d3 would be played in the Grand Prix.
I've never played the advanced in my life, so I really don't have anything to contribute, except that white clearly misplayed it in your game.

Rob You're right. I got the Grand Prix mixed up with the main line. That's what happens when one tries to analyze everything in one's head rather than using a board and some pieces.,☺

nevertheless White' s e5 pawn has got to be an advantage somehow and I would prefer to play White. Now let me get out my set and figure out why! 😊

3...c5 in the Caro-Kann seems to be all I see these days (I play the Advance Caro as White). 4.dxc5 is the only critical try, trying to prove that it's too early for Black to be making such moves. White doesn't neccessarily try to hang onto the pawn, but can threaten to in order to force concessions from Black. After 4...Nc6 or 4...e6 (both are popular), currently popular seems to be 5.a3, threatening to play b4 (which will be a useful move whether Black can take c5 or not), tending to lead to quite interesting and unbalanced positions. I'd look at this line if planning to play as Black. Other move 4 replies eg. 4.c3, Nf3 can be met with more standard approaches.

Since it's a miniatures thread, I'll throw a game in for illustration. This game decided the English Women's Championship last weekend (the players aren't GM level but it hardly matters!)
Crazy!