Dacha Tactics #67 - Light Zwischenzug - with dark intentions

Fischer vs Geller miniature. Blacks King on f8 is not safe. And with our Golden Dark bishop helping out, its days are numbered. How to most efficiently use our dark energy? To paraphrase Lasker's famous guidance– When we see a good move on dark what do we do? Look for an extra light twist to top it off!

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.