i found this puzzle in a book, and made one from some scrap pine i had in the shop. it’s a nice little project to use up leftover pieces, as it doesn’t require much wood, and can easily be scaled to any size. it is constructed in the same fashion as this game by garyk. the six pieces go together to form a 3×3x3 cube. it sounds easy, but the puzzle lives up to it’s name. i’ve had about a dozen people try it out so far, and only 2 have gotten it (30 and 45 minutes). if anyone builds one and needs help, let me know and i’ll send you the solution.