IM Jack Rudd wrote:
Chris had at least four winning moves with that knight, in fact: 25.Nb6 and 25.Ne3 both pick up the rook. I'm not sure whether 25.Nc7 is winning as well.
I knew I was winning by that point (though the number of ways to win was a bit disconcerting). I was more annoyed that my 'brilliant' 22.Nc4 seems to have been refuted by 22...Qc2 (I'd only looked at 22...Qxa2 - a typical mistake to only consider the obvious captures). I was assuming that once my knight settles on d6 with gain of tempo, I would be winning, but couldn't work out what to do after 23.Nd6 Rc7 and went for another plan, which also had a flaw (23.Ne3 Qxa2 24.Nxd5 exd5). I haven't had a chance to look at it with an engine yet, but did I miss anything obvious?