[edsrzf]

The benchmark game now only shows one implementation per language. The reasons aren't very satisfying IMO, but see this thread:

http://thread.gmane.org/gmane.comp.python.pypy/7303/focus=73...

[igouy]

If you want "the reasons" see the Help page -

http://shootout.alioth.debian.org/help.php#implementationx