Hi all, Just as an aside - I wrote a small script that solves the 'Solitair' puzzle (32 pegs in a cross shape with a single peg missing in the middle) in python. Python 2.6 on Ubuntu 10.04 - approx 26 seconds pypy 1.4.1 - approx 5.5 seconds Should try pypy 1.5 now it is out. Cheers, Rasjid.