Originally posted by heinzkatDude it was a 5/0 game so missing mates happen.
You could've titled this "Knight sac - was it sound" as well. It wasn't. Should've played 18. ... Rgxf2+ 19. Ke1 Rf1+ 0-1
and 23... Rg1 is mate dude
More importantly: 19. Ke1 is impossible, dude!
edit: No it isn't. I jumped a move. 😳