Most people think that when it comes to jigsaw puzzles, the more pieces, the more difficult. These folks have never encountered the Impossible 4-Piece Jigsaw Puzzle. It really is as simple as it sounds, fit the four pieces of the jigsaw together to form a square. Connecting three pieces is easy and you can see quite clearly that the fourth piece fits the pattern but somehow, you just can't manage to put it in place. We love puzzles that look easier than they are and this one is a perfect example. Designer Keith Winegar is a master of deceptively simple puzzles and an accomplished woodworker as well. Includes four 2" thick pieces and measured 2.75" square once assembled. Manufactured in Finland.