Classy Checkmates

I am currently making a study on "classy checkmates" (lichess.org/study/iqLk23sk). If anyone is checkmated in an interesting way, or checkmate someone else in a classy way, please give the URL. They will be very appreciated!

here is a mate i did in bullet

Nice one mate!

Both my rooks and both my queens were necessary to mate the computer here.

soccerfreak1213 can I use this in my study? Nice mate though!

I think a must use will be the Reti mate, first used by Reti against Tartakower. www.chessgames.com/perl/chessgame?gid=1250654 is the game, very nice Queen sac. Note that 10.Ke8 falls victim to Rd8 checkmate

Bullet often produces great beauties.

UNDERPROMOTION checkmate in ultra, the only mate in one!

Geez, these are some cool mates!