Pretty checkmates

Hi everyone! 

In the past 1-2 years I posted some checkmates on my Instagram that I liked and thought I could show you some of these. Of course they aren't the most brilliant moves that no one can find, but I found them pretty. Let's see these checkmates! 

1. The reason why you should know the theory

In this game we played the Fried Liver attack and our game didn't last too long, only 18 seconds. 

Okay okay, it was in 1+0... But the following mates are more serious  

2. Never let your opponent to open your King's position! (played on lichess.org)

3. Always be careful of sacrafices! 

I am only showing you these 3 games today, but I have more in my mind, so I'll bring a second article of these mates.

What is the most beautiful checkmate you ever gave? Share with me in the comments!