The only choices seem to be 47. ... Rxf3 or 47. ... Nf4.
I like Nf4.
-Protects our passed pawn on h3
-Blocks advance of white pawn on f3
-Brings Knight to a more central position - closer to both white's king and passed pawn.
-Leaves our rook nicely placed on a completely open file.
White's most significant threat by far is his passed pawn on c4. Capturing the f-pawn with the rook seems to do bugger all towards countering that threat.
I vote to resign. It's the only respectable thing to do considering the quality of our past few moves. 😛 Sheesh I leave for a little while and you guys fall apart! I still think we had a win before. 😀