Software engineer with an interest in maths, physics and recreational programming.

If you want to give my older challenges a go, please do, even if I've already accepted an answer. Unless stated otherwise in the question, I will review every new answer and update the accepted answer accordingly.

I like to (ab)use regular expressions for tasks they weren't meant for:

• Counting portals in ASCII art
• Some number theory
• Rolling rocks downhill

For this purpose, I've written Retina, a regex-based programming language (using the .NET flavour).