Playing numbers

I like to play numbers. Don’t get me wrong. It’s not gambling but it’s just numbers specifically from 1 to 9. I’m referring to SUDOKU, KAKURO, etc. Well, I’m expert in SUDOKU but still new to KAKURO. It’s no difference at all between these two; the important key is that you know where to put the numbers at correct place. And when you know the placement is right, you yourself will feel the satisfaction. But, once you play them, you just can’t stop. You will keep playing and playing until you will get addicted to them. I think it’s a good addiction since playing this numbers makes your brain works…