ever since I found out that theoretically a knight against a bishop could be a win I always wondered how a game could reasonably end like that. this puzzle demonstrated that so well!

That knight checkmate is one of the most impressive checkmates I've ever seen in my life.

I'm not easily impressed, but that win at the end impressed me.

We appreciate you explaining why the other options aren’t correct

my man teaches chess like how that one Indian teaches us math in a 10 minute video

This is the best endgame puzzle I’ve yet seen, wow! A very simple, realistic position. Counterintuitive moves that are so uninstinctive. A knight checkmate against a bishop. So many awesome components.

This is an absolutely incredible composition!  What impresses the most is the realism of the starting position and the many small puzzles and beautiful ideas in one big one.  And Korolkov achieved all this with a small number of pieces on the board.  Absolute chess artist!

Thanks i got into this exact position in my 257 elo gameplay so i memorised everything u just said and used it to beat my unsuspecting opponent

The sad part about this puzzle is, that trading down to King vs. King, knight and bishop is actually more resilient for black.

Thank you for discussing this study in enough detail to reveal all those subtleties. It well deserved that prize.

Because the moves were limited, it was easy to see each individual pause, but seeing all of that beforehand is a feat, so pretty.

Delivering checkmate with knight only is impossible, but I'll do it anyway.

The interesting thing is that chess engines, after 1.f7, will play 1...Rg8, only because it pushes checkmate out much farther than the line you presented (mate in 35 instead of mate in 13). In fact, there are many ways that Black can delay checkmate. But your line is by far the most elegant.

This is one of those puzzles where when it is broken down into smaller puzzles, all of the moves are relatively easy to find, but it's really hard to see all of these ideas from the opening position.

I'm proud I found the good moves 😄
Didn't see the whole solution right away, but by process of elimination, I was able to find the correct moves

5:04 "So, check this out..."
*proceeds to get checked

It looks so simple. You think it's not that complex because there aren't many pieces on the board, but it's incredibly complex, and it shows how complex chess is.

I am not a good chess player but I still very much enjoy analyses like this. I actually found each of the right moves (surprised myself). Analyses allow us to share thoughts with each other and that's cool.

Oh, the agony!!!....On ICC the computer would declare the bishop vs. knight ending a draw due to lack of mating material.....one move before the checkmate.

I am not surprised it won first place. When people talk about 'the beauty of chess', I believe people think, "it's just a board game, what are you talking about"? the above puzzle is a perfect example of that beauty.