Set Daily Puzzle

I just found one of my favorite games online in a solitaire version. The game is Set and is made up of cards having 4 attributes: color, shape, shading and number. There may be 1, 2, or 3 shapes on the card. The shapes may be diamonds, ovals or squiggles. The shading may be solid, lined or open. And the color may be green, red or purple.

The goal is to find sets of three cards that, for each characteristic are all the same or all different. For instance, the column on the left above contains a set because all three cards have the same color but all have a different number of items, a different shading, and a different shape. The second column from the left is not a set because although they all have the same color and the same number, there are two open figures and also two diamonds (not all three the same and not all three different with these last 2 attributes). Remember, for each attribute you must have three matches or three differences. How many sets can you find in this image?

There is a new game posted daily at:
http://www.setgame.com/
I know I'm going to be checking in on this!