
I was on the New York Times site tonight looking for the numbingly difficult (for me) math puzzles I had stumbled across yesterday when I noticed a game on the puzzle page that I hadn't seen before: Set.
Set is a game in which you must find sets of cards that either match or don't across several attributes. Like sudoku, it's a logic puzzle that seems really hard until you figure out what you're supposed to do; after that, some puzzles will be harder than others, but the frustration dissipates. In a basic game, you find matches or dissimilarities in color (purple, red, green), pattern (solid, striped, open) and shape (oval, squiggle, diamond). In an advanced game, the number of symbols on each card varies from one to three.
This screen grab shows the last set I found in an advanced game, and it illustrates the gameplay well. The cards match in shape and differ in number, color and pattern. You can find new puzzles every day on the Times page and on the Set Games site.