Nunn - Hebden, 2014

I think I've already seen it, nevetheless, it's fantastic.

yep  re5!. i wonder how many moves ahead nunn had seen this.

It's definitely easier for us, because we KNOW there's something. 

I did not see that the rook sac was any good, of course.

But then again, once you see the solution, it is actually quite simple and yet so beautiful. Black has no choice but to accept the sacrifice, otherwise the pawn simply falls to the rook. But if Black captures, 2 f4 gains the one necessary tempo for the king to step onto f2... simply brilliant.

yeh but exactly how brilliant depends on how far ahead it was seen

It is not an original idea. (The shock!) Tim Krabbe posted a collection of games and studies (1985, revised 1998) with the same/similar idea. I remember the idea from browsing through it a couple months back. GM Nunn being a keen problemist may even have recalled the pattern OTB.

The link to the collection, for your pleasure.