# Category Archives: Puzzles

Consider the Liar sentence ‘This very sentence is false’. Is it true, false, neither or both? From Wikipedia: Liar’s Paradox This video is part of a series of work by High Tech High Media Arts 12th grade students in the … Continue reading

## How Old is Grandma?

The answer – if you guess right – will blow you away. One evening a grandson was talking to his grandmother about current events. The grandson asked his grandmother what she thought about the shootings at schools, the computer age, … Continue reading

## My Collection of Favorite Fun Puzzles for All (Part Two)

#8: This is a multi-level rolling block maze with the following rules: 1. Each of the dark blocks (A, B, and C) can roll in any one of four directions, using one of its base edges as the axis of … Continue reading

## My Collection of Favorite Fun Puzzles for All (Part One)

#1: Place the numbers 1 through 10 (each used exactly once) into the circles so that each pair of consecutive circles is farther way than the last pair. #2: In a certain country, it takes a minimum of 5 coins … Continue reading

## Balinese cup trick / candle trick / spinor demonstration

What’s the simplest explanation for this trick? How does this trick relate to the spin-statistics theorem? “It’s the Balinese candle-dance trick, and if you don’t know it, go find someone who can show you how to do it. You hold … Continue reading