- Spin all spinners. Hold down the shift key to select all spinners at once and then click "Randomise" at the bottom of the screen.
- Place the 7 gray triangles in the triangles shown on the spinner.
- Use the 11 pieces to fill in the board. You can flip a piece by selecting it and then clicking "Flip" at the bottom of the screen.
- For an extra challenge, use the two blue trapezoids together to make a hexagon. While all possibilities have solutions, only some have solutions with the hexagon. You can enter in the numbers from the spinner at this website to see if there is a solution using the blue trapezoids as a hexagon.
Mathigon Instructional Video
The Genius Star Product Video
The Genius Star Instructional Video
Buy the Game
Visit the Happy Puzzle Company to purchase the game and explore other available games. Use promotional code "MATHIGON" for 10% off. Click here to purchase the puzzle in the United States and click here to purchase the puzzle in Europe.
Agreement of Use
The Genius Square and The Genius Star are (C) The Happy Puzzle Company Ltd. They are trademarked and design registered International design registration number DM/204 748; United States Design Patent Number D923101; and United States Design Patent Application Number 29/785,117.
Exclusive usage of these games on Mathigon has been licensed by agreement with The Happy Puzzle Company Ltd. They may not be lifted from Mathigon or copied in any way without the prior permission of The Happy Puzzle Company Ltd. www.happypuzzle.co.uk / www.happypuzzle-global.com