I have often (or this one video just got it stuck in my head) heard Youtube videos (time 2:37, nothing else relevant) refer to this kind of pawn structure as a “crab” pawn structure (below, white pawns.) The name makes sense because it is like a crab pincer enclosing the board, as agadmator said.
This is just an example; it is not to be analyzed.
[FEN ""] [startply "8"] 1. e3 f5 2. f4 Nf6 3. c4 c5 4. d3 Nc6
Is there a good opening that revolves around such a “crab” pawn structure? I am looking for just one example at the least. I’m just asking a single opening, not all possible ones.
I would like to utilize such an unorthodox playing method to surprise opponents. I would like to know advantages/disadvantages of the opening, such as how to counter/play it. There is no need to cover all possible variations.
As long as the structure of the pawns, as shown in the example, is the same, the “crab” can be anywhere on the board.