Creative Crafthouse Martin's Menace Small Brain Teaser Puzzle for Adults

Wooden brain teaser puzzle for adults: only 4 pieces, and one of the hardest ever made. Fit four wood pieces into a compact frame. Stewart Coffin's design #217. , The puzzle that beat Martin Gardner: the father of recreational math spent a week and could not solve it, then called it the finest dissection puzzle of all time. , Why 4 pieces defeat everyone: not one piece rests in a corner or touches two sides at once, so every corner first, edge first instinct you have is exactly wrong. , Real wood, made in USA: precision laser cut in our Hudson, Florida workshop with Stewart Coffin's permission. Four pieces, each a different wood, set in a floorboard base. , The hard-to-buy-for gift: a compact wooden brain teaser that ships unsolved, small enough for a stocking or a desk, and made to stump the person who already has everything.