Today, I was casually watching a test match between Stockfish 140204 vs. Houdini 4 Pro when suddenly I saw something I had never seen in my lifetime - a mate with just 2 Knights in the endgame! It was even more astonishing to know that the second strongest engine - Houdini was the victim by Stockfish. It is remarkable that the time control applied was only 20 seconds base + 500 milliseconds increment, there is no assistance with endgame tablebases and the computer used is an old AMD dual core with 4GB RAM. Even with sub-second per move, a chess engine is still capable of "thinking right" that human grandmasters may not be able to beat easily.
Endgame textbooks tells us that with just 2 Knights in the endgame, it is a book draw. I read numerous chess books and magazines and had not encountered a game that showed a mate with 2 Knights. Probably every chess player had not yet seen such a real thing with 2 Knights mate.
Here is the gem I will treasure forever: