Ok. let me replay it. I must have messed up a move.
I recommend https://lichess.org/Easy to set up a new game and requires no registration. You can make an account, but that's only for keeping a score and saved games.EDIT: btw, just click the "Play with a friend" link on the right panel, and click which side you want to play, you will be given a link you can share with your friend so they can jump right into play.
http://www.chess.com is more popular, but lichess is much better, IMO.
Here's a neat looking chess game I just came across on-line:https://www.kickstarter.com/projects/1585372093/globe-chesstm-spherical-chess-set-fully-playableThat's gotta be a really great game!
I played black
18. ....gxf4 is not a check.19. Qg3 is a truly dumb move.