Here is a game in which I played recently that shows a strong comeback. I was losing in the begininng and thought i was gonna lose for sure but then the tables turned and I managed to get a checkamte. This just shows the power of chess and how you should never give up, becuase with a lot of persistnece and a tiny bit of luck you can go from losing to winning.

Awesome comeback

Those are the checkmates i never see coming, or have never done to others :P