Is this legit? The fastest checkmate of all time!

This is a follow up to my "top 10 fastest checkmates in history" video, which happens to be the most viewed one on this channel.
It turns out that it's not just me who likes mating real fast!

The game in the number one spot in that video was Fool's Mate, which takes four individual moves, but I have since come across a game that took only three.

Sources:

1867 game:

https://chesshistory.com/winter/extra/jottings.html ("Short game")

1908 game:

http://web.archive.org/web/20161204043857/http://www.chesshistory.com/winter/winter52.html (note 5858, "An Unprecedented Lunge").

#top10
#topten
#checkmate