Your best checkmate?

I don't know if a thread like this already exist in this forum,
but if not, I thought it would be fun to share some of the coolest checkmates we've gotten while playing chess. :)

This is one I'm pretty proud of:


It was a while ago since I've played this one but I still think it's one of the best checkmates I have. Not everyday you mate someone with a castle. :)

If you have a cool checkmate please don't be afraid to share it!

A smooth castle!
This one was one of my favorite ones

@Chess_Agent Nice!
It's always satisfying to checkmate the king in the middle of the board.

Not from my main, but this checkmate is mine from an alt. lichess.org/TBhfH3DW#157

This one has gotta be my favorite, I was white in an OTB game: lichess.org/WzfHJxHY#104

This following one was from my atomic chess game: lichess.org/NjsOysf5/black

I checkmated my opponent with 3 pieces:Bishop,rook and knight.I think this is one of the most beautiful checkmates.

My nicest mate in 4 – which i missed :-(

Another one was from my standard chess game,which i played just now with my friend: lichess.org/Dmt659OP
I was white there.

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6
5. Nc3 a6 6. Bc4 Nf6 7. Bb3 Qb6 8. Be3 Bb4
9. Nxe6 Bxc3+ 10. bxc3 Qa5 11. Nxg7+ Kf8 12. Nf5 Qxc3+
13. Bd2 Qe5 14. Bh6+ Kg8 15. Qd6 Qxa1+ 16. Ke2 Nd4+
17. Qxd4 Qxd4 18. Ne7#

(Not sure how to post a board)

Here's a few I like quite a lot.