I reached this position as white in an otb game last night against my 1800/145ecf opponent.
Black has just played e4.
I could be safe with a roughly equal position and play Nd2 but as I tend to do, got bored instead choose c5!?
Hitting rook and threatening to win the Queen with Bc4. I did think about playing Nd2 first then c5, but the tactical shot could disappear a move later.
I calculated there would only be one decent move: exf3 to give black something, on top of that in practical terms its quite a brave move to give up your queen and play the position out - black would have to play very precisely with something like 19...exf3 20.Bc4 Rd5!
He did not play exf3 and played Qb6 and got mated about 10 moves later.
I win quite a few games OTB playing like this, its a tough habit to kick, the question is - is bluffing worth a shot 🙂