This "magic trick" is actually a mathematical game. Amaze your opponent by guessing a number they think they have chosen in secret!
The rules:
1. Ask your opponent to secretly select a number from 1 of the 7 wooden boards.
2. Show your opponent the boards one a time and ask if their number is on the board. Show all the boards, as their number will appear on more than one board.
3. Take away the boards that do not contain your opponent's secret number.
4. Add up the numbers in the top left corners of the remaining boards. The result will be your opponent's secret number..

• Difficulty Level: 3 (Difficult)
• Dimensions: 1" x 1" x  4.5"