Dacha Tactics #59 - The queen acts as a ........

Black's king is under fire. However, there is a slight hiccup – the f4 dark nugget is forking out Queen and Rook. We must be accurate in how we proceed. Maybe a bit of light from the light Bishop... and dark?? Let's be imaginative and unearth dark harmony!

Interact with the puzzle below.  If you get stuck, you can always click the "lightbulb" icon in the lower-left of the puzzle frame.  Good luck!

See IM Yaacov discuss the solution with a video, coming soon.