Sometimes it's hard to know how to phrase things in here. I want the Goldilocks Zone. Not to obvious but surely not annoyingly difficult either.
How are these?
Hint: You'll probably want to peek at this.
It's a "!" move. It took Magnus ~3 seconds to find it. It's not crushing or anything. But it is hard to see.
Big hint
Poisoned pawn.
Answer
34.Rd3! It sets a trap. Even GMs can fall into a trap in speed chess.
34...Qxe4 is an a terrible move that means white gets black's queen for the cost of a pawn and a rook.
35.Rf3+. It's a discovered attack on black's queen by white's queen.
https://www.chess.com/analysis/game/live/112464692649?tab=analysis&move=66
Okay but this isn't white's "best" move because it requires black to blunder and lose. Black doesn't have to take that pawn and taking the pawn leads to a fairly obvious queen trap. I get that it's speed chess but in a puzzle setting even to me, a weak ass player, I wouldn't take that pawn.