from Alex Baburin’s excellent Chess Today
A won Theoretical Rook Ending (FYI: this is #58 of the 100 Endings You Must Know) plus half a second’s lack of concentration and a finger slip = 1-0 becoming 1/2-1/2*.
It’s a show that never ends.
Nigel Short Index
Rook and pawn Index
* Dig one of your books out or Nalimov it and you’ll discover both that 71 Ra8! is +- and that with Black’s rook on b8 71 Kd6! - triangulating - is the move that wins.