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Are you ready to take on the Sixes Challenge. You must use exactly four sixes and your choice of arithmetical symbols to form the eight given target numbers. What is the Sixes Challenge? Using exactly four sixes, add arithmetical symbols between the sixes to make each of the target numbers. You may use plus, minus, …

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This 3-1-4 Number Challenge is the perfect way to challenge your brain on Pi Day! How many different numbers can you come up with mathematical expressions for using only the digits 3, 1, and 4? Instructions Use the digits 3, 1, and 4 exactly one time each along with any mathematical symbol or operation of …

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Sankaku puzzles are a geometric based logic puzzle that focuses on finding the area of a triangle. The goal of each puzzle is to connect three dots to form a triangle with the specified area. Sankaku puzzles are the creation of Naoki Inaba, a prolific Japanese puzzle creator. I first discovered these puzzles several years …

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I am really intrigued by these square sudoku puzzles from Erich Friedman. Place 16 digits in each 4 x 4 array so that every row and column contains the same 4 digits in a different order. Each rectangular box should contain the digits of a perfect square when read across or down. Need help remembering …

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Hidato Puzzles have been one of my go-to puzzles in my file cabinet of puzzles for several years now. I have had great success with getting students interested in these puzzles who haven’t been interested in other logic puzzles like Sudoku or KenKen. Somehow, these puzzles have never made an appearance on my blog. Today, …

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