20.Bf7?? is a gross blunder. Black equalizes the position with 20. ... Nxd4 21. Bf4+ Kc6 22.Rc1+ Kb5 23. Bxc7 Rc8. Albeit black is still in a messy situation, you no longer have the mating threat you once did.
You played a great game though, black however did not.
Oh my you are right.
I think though my Rook move and follow up knight move both deserve the special (!) though
kb6 was a foolish move on blacks part until then your queen was sitting in unprotected territory ripe for the picking which would have messed up your entire game. It's easy to see these things though after the fact. I make moves like that all the time. (and pay for it) just something to think about though. Try to keep your moves interlocked so that he'd have to give something to take a piece of yours. Make him pay with his pieces. Sometimes though you get a nice string by letting a piece go unprotected or the trade is worth it. (i.e. minor piece for a stronger piece) Just my thoughts.
I would be grateful for some comments/analysis.