YOU SAID:
I am an idiot you cannot beat that
INTO JAPANESE
私はあなたがそれを打つことができないばかです
BACK INTO ENGLISH
I'm an idiot you can't beat it
INTO JAPANESE
私はあなたがそれを打つことはできませんばかです
BACK INTO ENGLISH
I'm an idiot you can't beat it
You've done this before, haven't you.