I think the safest bet is to submit the prg via email as in the rules, I initially put my entries on the web player because I thought it was a shame if no-one could play until April, and also thought it would help generate interest. Jamie the competition organiser was fine with that, but eventually all entries will need to make their way to Shallan in .prg format so he can test them against the rules. I haven't actually submitted the .prgs yet in case there are bugs or improvements I can find before the deadline.