Good puzzle, but what is wrong with 2. Rxf6+?
3952 rated puzzle
Thank you. At this level I receive a lot of endgame puzzles, which is good because endgame puzzles are my strength. All you have to do really is consider every possible move and calculate ahead.
Here's the thing, a lot of puzzles at the lower stage deal with forcing moves (checks, captures, etc.) Once you get higher up you have to deal with a lot more subtle moves, or moves that seem like they don't accomplish anything. However, these moves have a powerful impact as the opponent doesn't have any way to stop your plan. If you can find these kinds of moves then you'll be a great puzzle solver.
I know this one here: https://www.youtube.com/watch?v=yIA2nff3CTw
Hint: white is one bad move away from getting checkmated but can checkmate black with a few accurate moves.