threesome panic - 1.3

based on Thrifty Threesome Thriller project
http://www.pygame.org/project-Thrifty+Threesome+Thriller-1738-3029.html
eliminate the triplets before the game board becomes full. Excluded are triplets with only 2 cards that have a similar attribute.
thanks to Andy Hanson(rhodiumgames) for the designs of cards.