More fun with Twitter! [Updated]

I saw this on Twitter and want to remember to look at it later. I haven't looked at it yet, and have no idea what the answer is. At least one player significantly stronger than I am gave up after a while and plugged it into his computer! Have fun!

Hort-Arakhamia, Copenhagen 1997, ended in a draw here by repetition. Was there anything better for White? pic.twitter.com/6YdjXslIPn

— Martin Bennedik (@bennedik) April 8, 2016

r1bq1k2/1p3p2/5N1p/p2PQ3/8/5B2/PP3PP1/n5K1 w - - 0 1

UPDATE: I've added the fen for the position. This thing is a beast. White's winning move (I won't reveal it) is not forcing, meaning you have to look at a lot of replies. I'd suggest plugging it into the program of your choice and exploring it that way, OR sitting down with a board, pieces, pad and pencil, and writing down your variations.