Fantastic resource, and mentioned here many, many times. Here are some previous submissions: http://news.ycombinator.com/item?id=1262968 http://news.ycombinat

Fantastic resource, and mentioned here many, many times. Here are some previous submissions: http://news.ycombinator.com/item?id=1262968 http://news.ycombinator.com/item?id=1262968 http://news.ycombinator.com/item?id=203317 http://news.ycombinator.com/item?id=203317 http://news.ycombinator.com/item?id=86365 http://news.ycombinator.com/item?id=86365 You can find many, many references with this search: http://searchyc.com/projecteuler?sort=by_date http://searchyc.com/projecteuler?sort=by_date