After you solve each Project Euler problem, you automatically get access to the forum thread where people compare their solutions to that problem. For example, I was happy to find Peter Norvig's impressively concise solution to #54.
Do you have evidence besides the username and the programming skill that it's Norvig? I also entertained the idea that it's him. At first I didn't examine his code deeply, but its conciseness inspired me to create a 12-line semi-obfuscated Python solution. I posted a clarified version of that in the thread. What do you think about it? Also, could you tell me your Euler username so I could look for your solutions (provided that you actually post there)?
Now that you mentioned Norvig's solution I investigated it and after correcting some typos I got it to run on my PC. I concluded that it works pretty much the same way as my solution (but mine's considerably faster :) ).
This is the sixth bimonthly 'What are you working On?' thread. Previous threads are here. So here's the question:
What are you working on?
Here are some guidelines: