Tartajubow Defense?

I recently played a 5 minute game on Playchess and it served as a reminder why I don’t play blitz; I need three days to select a move, not 3 seconds. I call this defense the “Tartajubow Defense” because my database doesn’t have a single game with the defense. There must be a good reason. Anyway I thought I might try it in an anonymous blitz game because what’s there to lose besides the game? Actually I was doing pretty good, winning even, until I missed several mates.