A thank you to everyone who makes this possible:
How to write a JIT compiler in 30 minutes
PyPy Status Update
Solving Google Code Jam problems with PyPy - Part 1
Solving Google Code Jam problems with PyPy - Part 2
Coding competitions with PyPy aka "Python for the win!"
Programmazione competitiva con PyPy: "Vincere con Python!"
Fundamental Technologies Used in PyPy JIT Compiler
Making CPython Fast Using Trace-based Optimisations
Why is Python slow and how PyPy can help?