Well, I made it as far as J. :-) Surprisingly engrossing for a simple premise!
Wow, your gaming strength is proven. That said, I got to U a number of times. To get to that level, it becomes necessary to have a more elaborated strategy (and some time, because it is long).
I have updated the game to show number of moves and time elapsed on each level reached, so as to measure improvement.
If you reach U, or even J with few moves, let us know!