Good game
What is @kostyakornienko's new account?
Good underpromotion checkmate
@cat
LM is Lichess Master which is an official title only on Lichess and to get it, your account must be clean with no warnings from lichess. Do not ask for it
https://lichess.org/L76dhBgILBdh https://lichess.org/JAUca8du2ZZC and many more
https://lichess.org/L76dhBgILBdh
Silman's Complete Endgame Course