Set puzzle: Difference between revisions

Set Puzzles are created with a deck of cards from the [http://wwwen.setgamewikipedia.comorg/wiki/Set_%28game%29 Set Game(TM)]. The object of the puzzle is to find sets of 3 cards in a rectangle of cards that have been dealt face up. There are 81 cards in a deck. Each card contains a variation of the following four features: ''color, symbol, number and shading''.