Blunder Watch
I don't know how to solve this puzzle
Why are you trolling my posts with this same comment?
I don't know why. I don't think I can solve this puzzle without help
With these Blunder Watch puzzles first tap on the Hint icon to see the first move followed by the blunder by the opponent. The puzzle starts after that. The blunder usually leads to a loss of material and sometimes a checkmate. In many cases the blunder occurs because the opponent missed the threat of a sac. Any piece undefended or defended just once is susceptible to capture if it leads to an advantage like checking the King or winning material through a skewer or fork.

Been a while, but I recently saw an amazing position in one of my game.
Press the hint icon (the lightbulb) or find White's first move. Then, punish Black's blunder!
Nice puzzle. I played a different solution to draw the f8 Rook away from defending the f6 square for my Knight to land on and give check. But, your solution is more clearly winning. Well done.

If I may, I'd like to add one of my own that actually occurred in a game of mine. It's very easy, but it's the thought that counts. I think.
My opponent plays the Tennison Gambit and then tries to threaten checkmate with Bc4, but immediately blunders after the cheap checkmate trap is prevented. Figure out how I punished the mistake and went on to very easily win the game.