Heptominoes is one of those devilish "pack" puzzles -- some find them the hardest kind -- that require you to "pack" the contents into the space allotted. Or, for a "quick puzzle," (about 10-15 minutes), take any 7 pieces out of the 108 pieces and try to make a square. There are thousands of possibilities! It's hard to believe that a two-dimensional puzzle could be so challenging, but this is one for the most dedicated puzzle-solver. A great family "leave it out on the table" puzzle.

Constantin Puzzles, the German-based puzzle-maker, has been intriguing us since we first started going to the Nuremberg Toy Fair 10 years ago.  Designer Jean-Claude Constantin, creates dozens of fascinating, brain-twisters that are unusual, beautiful and baffling.  A treat for anyone who loves a good challenge!  We are delighted to offer a few of our favorites for your enjoyment.