Interesting game and moment. I think it is a good example to highlight that a chess game can potentially turn around very quickly and that it really isn't easy - no computer can simulate the psychology and pressure that REAL chess brings. Of course, gxf5 missed kind of hurt White, but finding something in an actual game is always tougher than a simple puzzle or tactics problem. I think 35.Qf1 was a more stubborn defensive try, but it is still obvious that Black is better there (which is tough because White was clearly winning just a few moves ago).
Chess games can turn really quickly around can't they? *sigh* Even GMs deal with the same problems - chess is chess (although a GM definition for "turning around" is probably different from that of the common chess player: GM games have much more subtle things that build over time, but nevertheless mistakes happen there too).
I played a game earlier today, which I gave away right at the end due to what now seems like a silly mistake. Might seem that way now, but the story goes a little differently when you've been applying pressure for almost an hour.
I can't really annotate the game on this device, but watch out for move 34.Qh3... move 34 was the deciding moment, for better or worse.
Did you see that? Slap yourself if you missed it lol.
Anyway, that's what I meant by a double edged sword - it takes effort to apply pressure, a lot of mental energy, and in the end you just might crumble on yourself if you're not fit enough. So... more tactics, puzzles, and endgames for this player to learn some Pressure Endurance.