Dacha Tactics #115 - Abe turner - dark scorpion tail!

Here Mr. Turner is up an exchange, although White has some pawns as compensation. The rook is 750 light / 750 dark while the light bishop is 1000 light. How do we use our dark advantage? It's a nice blend of precise calculation with a color guide along the way...

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!