Very occasionally I stumble across a puzzle that is so simple to comprehend and yet so hard to solve.

The Resolving Mac Mahon problem using Dotnet problem is such a puzzle. Since reading it this morning my head has been buzzing with ideas.

One of the missing pages that has been removed which I'm rather fond of has can now be found here: Pythag.html

I remember reading somewhere that the 13^th of each month is more likely to be a Friday than any other day.

So I decided to test this and calculated which day of the week the 13^th falls on. I didn't see any statistical anomalies for the first say 1000 months. But when I cranked up the counter to 20000 months, we can definitely see something.

I started counting from the 13^th January 2000. The last 20000 months takes us well into the next millenium. Nevertheless whoever invented the Friday 13^th bad luck rumour could have checked the figures and gone for Saturday 13^th instead. Not only would we have less bad luck, but also we could stay in bed longer.