Not sure it yields a fast win, but consider the alternative. Not taking the pawn means that black would have a passed pawn on the 7th rank, leading to a fast loss.
Today I was stuck on a puzzle with rating lower than 200.

Just I was surprised that was something not obvious for me on the puzzle with rating <200, so I was ought to think more. But, obviously, that's a single great move at the case.
P.S. A fun moment: this game, historically, ended in a draw. And engine shows nearly +3.4 after taking the pawn, the best move.
Today I was stuck on a puzzle with rating lower than 200. Why is it so hard, and am I crazy?
I am more than 1200 in rapid, 52 top in puzzle rush, and more than 2600 in the puzzles, as top.
Sometimes people need to think less than they do. Estimating the game {on the pretty endgame stage} up to the end yields, sometimes, a total miss-understanding of the position.
[Question more to the people with the rating of <1500]
I am 1000+ at all classic chess types. And tell, how fast and clear do u figure out and get at this position, that taking a pawn is the best move, and yields a **fast** win then?
Sometimes we need to think much less, than we do.
Chess is not about knowing the whole sequence of moves at the game. The enormous and great a part of chess, it's spirit, is knowing the strategy of a game, but not estimating on the 10+ moves ahead.
As one person said,
Business is not where people know what they do up to the end. It's a complicated process of the opponents interaction or/and confrontation, in which people *sometimes* can look a one, or possibly few more, but not always, moves ahead. And that's all its privilege: when person knows each his move, he knows a lot.
Somebody
Chess is also similar to business, and a kind of it.
It is not where people should know the game, it is where this is **great** and extremely cool–enormous to know the each move. But when person knows each his move, he knows the game on a great level, and when person knows his game as a sequence of perfect moves, and each move is a part of his perfect [business] plan, then he knows the whole game, and he is a perfect player.