My first attempt at a puzzle

dantewitt
[Site "Chess.com iPhone"]
[Date "12/12/2018 07:12PM"]
[FEN "qrkq1R1q/1ppp1N1p/1n6/4B3/3P4/1P5B/1K1P4/R7 w - 0 0"]
[White "dantewitt (0)"]
[Black "Computer (Level 20) (0)"]

1.Nd6+ cxd6 2.Rc1+ Nc4+ 3.Rxc4#
dantewitt
Well THAT’S not what I meant to post. Sorry, folks.
dantewitt
Well THAT’S not what I meant to post. Sorry, folks.
iivlx
Hi, I think this is what you meant:
dantewitt
@iilvx Thank you so much! 🙏
dantewitt
Can you find a quicker mate or another alternate line?
iivlx

No, with the three black queens on the board if white does not mate them immediately I'm sure they are losing.

However here is a slightly altered version of your puzzle with a more realistic material imbalance, white is down the exchange for a pawn. But it is mate in 4, also all white's pieces are actively engaged in the attack.

 

dantewitt
Thanks! I’m glad my puzzle seems to be correct. I like your version.