At work today, I figured out how many years it would take to complete every single possible 9x9 soduko puzzle if you did one every 10 minutes (which is optamistic for most people) non-stop; and the answer is:126,919,782,192,181,760 years (About 127 Quadrillion Years) To put that in perspective, that's roughly 9.7 million times the age of the universe.
And this is only taking into account the 6,670,903,752,021,072,936,960 (6.6 Septillion) possible solved puzzles, this does not figure in the seemingly infinite number you could arrive at if you figure in the combinations of different puzzles created by alternating blank spaces.
Imagine if I figured out 12x12 puzzles. Maybe I'll save that useless fact for next time.
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