That was quite impressive. I love playing the Queen's gambit and will use some of the principles you displayed in this game.
Cute queen sac and mate in 11 moves (QGA)
Thanks! I quite like the economy of the mate meaning that each of the enemy king's would-be escape squares (including taking my knight) is only covered by only one of my pieces.
This is a game I played yesterday on another site in which the format is 7 days for a move (i.e. correspondence) but where in practice players treat their games as skittles coming to and from them when they have time. Suits the gainfully employed for that reason. Most of the players range between elementary and advanced. There is no pairing by any rating system, only random pairing, so like the proverbial box of chocolates you never know what you're going to get. Now and then one comes across total beginners and very occasionally someone of expert standard.
This game features a Queens Gambit Accepted in which I was white and demonstrates the folly of trying to hold onto the pawn if you don't really know what you're doing, violating the principles of development and good piece placement in pursuit of material advantage. However, I'm really posting this game because of the rather cute finish which some of you might enjoy.
The analysis comes from chess.com's GM Stockfish who considers my 8. d6 a 'Mistake'. I'm sure she's right but had I played O-O the game would have probably taken a prosaic turn and become instantly forgettable. My opponent's gracious comment after this miniature in the game's chat facility was 'wow nice'.