14...Kb8
Event Chess Game (Bad_Dobby_Fischer - Martin0) #2

17.Bd2 would lose a piece to 17...f5. Neither 18.ReUP or 18.ReDOWN works since either a rook or bishop will be hanging on e3.
I think white looses a piece after 16.ReUP
I can't say I have fully grasped the position, but I don't quite see what c4 accomplishes, since the line played just don't work. If I were white one plan I might have tried is to double the bishops on the a7-g1 diagonal. Either a combination of Bf1, R1RIGHT or Kh1, Bg1, ReUP. This said, I feel like I have no idea what the correct plan is. I was struggling to find a reasonable plan for white, so I thought I had all the time in the world to get my king to a8 before I start attacking on the kingside. Eventual I was going to get both bishops on the b8-h2 diagonal and make the h7 pawn transparent. My king on a8 with protection from a bishop on b8 should be relatively safe once I get there.
Whether those are the best plans for white/black, I don't know.

By the way, did you see that 15.cxd5 would have blundered to 15...Ba4 when I would have won an exchange (with the rooks being stronger than usual)?

c5 looks clever.
I guess the simplest line after 17.c5 is 17...dxe3 18.cxd6 exf2+ 19.Rxf2 Nxd6 when black wins a pawn.
But forget my claim that black could win a piece earlier. I forgot that white can simply play
17.Bd2 f5 18.Bh1. White should be more or less fine there.

The bishop on h1 is basically a fianchettoed bishop.
Anyway, the rematch is here:
https://www.chess.com/forum/view/chess-variants/event-chess-game-martin0-bad-dobby-fischer-3
i considered Rdc1+
but i like c4