Best checkmate move ever.

I've done an O-O-O# once before on here - looked ridiculous

Ever finished a game with 0-0-0-0-0-0# ? :p
en.wikipedia.org/wiki/Joke_chess_problem#Offbeat_interpretations_of_the_rules_of_chess

You coulda checkmated by castling, that would have been pretty funny as well.

http://en.lichess.org/3nKhTuYd/white

here is castling!

http://en.lichess.org/SgDdJYVHCqrv
Start at move #21.