Firstly, I have removed the Logosmas decorations.

Second, chess now has the ability to reverse the last move. It is
documented in HELP CHESS. If you move and screw it up, your opponent can do "takeback" and your screwed up move will be reversed. You cannot do multiple takebacks in a row.

Penned by my hand on the 15th of Chronos, in the year 237 AF.