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Ships within 48 hours · Estimated delivery Oct 16 - Oct 21
Pay in 4 interest-free payments of $4.99 Learn more
Ships within 48 hours · Estimated delivery Oct 16 - Oct 21
5 by 1 inch
water bottle
or browse the full Impossible Puzzle Series
Watch the Doomsday Calculator in Action:
25 inches and travels easily in a bag or glovebox
Magic Math Square 1-9 Brain Teaser | 3 Different Puzzles in 1 handcrafted game 5 by 1 inchYou are presented with nine pieces containing the digits 1 to 9 and four pieces with a math operation (such as +, , x, ) on both sides of the piece. Your challenge is to insert them into the board to solve three problems as defined below. Using each digit from 1 9 1) Make 3 correct equations. 2) Arrange the numbers so that each row, column and diagonal add to the same number (dont use the math operation pieces). 3) Arrange the numbers so that each