I did eventually get 24, but now I'm stuck on 25. Here's the puzzle in case you don't want to play all the way to 25 to do it:
Each space is an empty quare, all letters of the same type are part of the same piece, and the XX is the blue rectangle (which you must move to the right by 3 spaces). The rules you can find by playing the first level of the flash game.
I think they intentionally designed it so that, in order to beat the level, you had to exploit that "bug." It doesn't seem to be something someone accidentally puts into the code. Also, I wouldn't be surprised if the level couldn't be beat otherwise.
I did the first 20 really easily, in like an hour last night, then i had to go to bed. Today its been really sucky. I'm stuck on 39 now... I'M SO CLOSE TO WINNING IT ALL! sucks.... i've been doing 39 for like... ever.
That game rules. I beat it all on normal mode, then on spinning mode racing against a friend. Fun stuff.