Great Minds Aristotle's Number Classic Wooden Puzzle

Founder of Western science and philosophy, Aristotle had a great influence on the course of the Renaissance in the 16th century. While only a third of his original writings have survived, Aristotle covered a diverse range of topics, from biology and music to physics and poetry. This brilliant concept allows you to complete the puzzle by using every number from 1 - 19. There are 15 rows in all directions to complete, each made up of 3, 4 or 5 pieces. Can you make every row add up to 38?