So last night I was playing against someone 41 ECF points higher than me. Black just played Rhd8. At first I felt a bit panicky that a recent cheeky d-pawn grab was backfiring spectacularly and my whole position was crumbling, but then! I realised I had a game "saving" move.
And I offered a draw seeing nothing more than a perpetual. My opponent accepted by saying something like, "I'd love a draw" and then proceeded to show me the simple winning line from that position. I had 20 minutes on the clock and at the very least had the draw in the bag. Add to that, that I'd already seen the "hard" move... Oh dear.
A very embarassing lesson learnt. I hope this helps someone else avoid the humiliation.