A hexagonal wood puzzle with 19 hexagonal tiles, numbered from 1-19. Your task: to arrange the tiles so every row - whether 3, 4, or 5 tiles long - adds up to 38. There are several solutions, and arriving at any of them is guaranteed to keep your synapses firing. Comes with a wood tray. A fun new brainteaser, inspired by the great Greek philosopher Aristotle. 6" x 6" x 3 1/2"