Solving a quiz

I'm about going to bed tonight when I saw there's an email from Indi Soemardjan. He's forwarding a quiz that shown on Mr. Tan's blog here.

Without looking at the original Mr. Tan's blog posting, once I read the quiz I run MS Excel and start putting all the facts on the cells. Cells with same text color of background indicates they have relationship as stated in the fact points. Cells with bold text indicate absolute position and can't be moved.

If you don't understand what I am talking about, see the quiz yourself and see how I solve it by trial and error with Excel's help on the attached screenshot. It took 26 minutes, probably not the fastest but at least I am honest :)