Very interesting, my moving was not the problem as it seems. With polar coordinates nothing changes. Even the shaky movement of the obstacles, if they are in the middle, does not change.

I stuck. Was neither able to jump, nor to move left. http://oi61.tinypic.com/1t4u4i.jpg Walked right, jumped left and got stuck on the same position. Next time it worked as it should.

Finally the intermediate version :) What is meant by ^x"root-sign"y? I thought that the "x" is the small number on the root but that doesn't work. For example ^2_/1 seriously should be 1 and ^2_/49 is 7. But the answers were wrong.

Thank you for already 7 votes! (And that many although no one saw the increasing of difficulty yet. It does not stay the same for ever. Go for 5 laps and more.) ;)

Thanks :) Nice, I see a 3 there. Probably I should add the highscore table. Btw, my highest on the real Mr Flap is 34, here it is only 14 yet, but didn't play much.