Logical Psychology

I posed my son a puzzle today. He’s a student, in senior high school, and exams are ever in his mind. I told him a story of four students who missed their exam, and gave him some information about them.

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Magic Squares from Latin Squares

The most recent game I uploaded to this site is a Printable Latin Square Puzzle. The goal of the puzzle is to arrange a set of 16 cards into a 4 by 4 grid, following certain rules.

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The Puzzle Universe – A History of Mathematics in 315 Puzzles

The other day I received a marvellous package in the post. Inside was a book, The Puzzle Universe, by Ivan Moscovich, published by Firefly Books. Ivan Moscovich has made a career out of making amazing mathematical puzzles and games.

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A Probability Puzzle From Dilbert’s Author

I’ve been reading this book, by Scott Adams, the author of Dilbert. Inside, I found a probability puzzle!

Scott Adams talks about Volleyball games, and how he noticed that the team that reaches 17 first usually wins. (A win in volleyball is 25 points.)

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Coffee and Coconuts

I’ve been playing with word puzzles lately – I want to add some more games to another website I have: Dr Mike’s Word Games for Kids. I don’t talk much about it, because it’s only got two games on it so far … that’s clearly not enough!

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Jigsaw Puzzles and the Riemann Hypothesis

[This is a back-issue of one of this site’s newsletters]

Here’s a simple-sounding puzzle: I give you a bunch of triangular tiles. What shapes can you make with them? The tiles are all the same size, all equilateral triangles. You have to use all the tiles I give you.

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Can You Solve This Puzzle?

I saw this puzzle the other day.

You have two fuses. Each fuse is a piece of string, that burns for exactly 1 minute. However, the fuse doesn’t burn evenly, so cutting the fuse in half doesn’t give you two 30 second fuses.

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Rectangles and Right Triangles

Can you find a rectangle whose perimeter equals its area?

I’ll explain one way to solve this puzzle below.

Allergy warning: this product contains algebra. May contain traces of number theory.

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