Saw right away exchange sac was on so copied game into
Winboard and played 'sac - don't win back'.
In this position you played 17.Bg5.
I had a quick look at the rule book.
Object of game: It's still to Checkmate King.
(thought it had changed to overnight to capture Queen's Rook).
17.Rxc6+ must be the move. It just screams out at you.
Game should have gone something like this.
First 16 moves are yours, last 9 nine are mine and I've not given
Black silly moves. They are very plausible.
You need a good dose of Morphy my man.
You dragged that out for 40 odd moves.