wooden burr puzzle. Stacking puzzle. Brainteaser. This puzzle consists of 18 identical pieces and a storage box. The challenge is to get all 18 pieces back into the box. There are approx 12 different solutions to this puzzle. The puzzle pieces are African Mahogany and the storage box is white oak. I make these myself by hand as a way to utilize and recycle scraps from my custom cabinetmaking shop. These are much better quality than the cheap, foreign made puzzles for sale elsewhere.