the most depressing game i ever played was a few days ago. i was up a full queen after 8 moves v a guy 100 points better than me. get to the endgame and i have queen and two rooks v a king and rook, the king is dodging in and out of the rook and pawns and it never occurred to me to just take the rook w/ queen, and promote some pawns. i ended up getting an unexpected stalemate, which was actually a 'good' result, given i was about to run out of time in hilarious fashion. it was mindblowingly bad. i couldn't even review the game after it finished.
i think this is even worse.
this is after losing 5 in a row to this guy (who is certainly way better than i am, i was up good material in 2 other games and got badly outplayed in middle-endgame).
but this, wow. nothing needs to be said about the very end i guess. an embarrassing lesson, but he was pretty gracious about it. it would have been my biggest win ever. sigh.