Last time I traveled by plane, I was delighted to find that the airport bookstore had a SuDoku book, pencils, and even a pencil sharpener, all for the airport-bookstore bargain price of around $17.50. By the time I arrived at my final destination, I had completed nearly half of the puzzles in the book, and had a massive headache from staring at the same nine numbers for the last six hours straight.
At work, I take a SuDoku break to solve the sometimes diabolical daily puzzle. I find a sickening pleasure in decreasing the time it takes me to complete it, or in actually being able to complete the most challenging ones. There are many sites that offer puzzles, tips, etc., but I am partial to this one.
But let me ask you this, dear readers...
Can anyone tell me how many possible combinations there are? At what point are we going to run out of new puzzles to solve?
Although I am generally good at most kinds of math, this kind of calculation is not something I can figure out on my own. So I'm counting on my friends in blogland, or possibly my mathematical-genius younger brother, who has recently gone MIA from the blogosphere.