It's back for a third year! The CSPMC has the same rules as ever, with a few variations. The challenge is to build a space MOC using up to 100 pieces and then rebuild it into two alternatives. The start date is December 1st and the finish will be on Sunday 11 January. The rules have now been posted. Stay tuned for more information about the prizes!
In the meantime, why not click this link to have a look at last year's excellent entries?