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May 2022
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Sunday, May 22, 2022

Who Won the Race?
Math and Logic

Who Won the Race?

We can sometimes use logic to stretch a little information a long way. Can these small clues tell us everything we need to know about who won this competition?

Series 3 of 3

Saturday, May 21, 2022

The Nine Nine Plus
100 Day Challenge 2020

The Nine Nine Plus

There are lots of ways to add to nine, but is it possible to make it happen twice in this puzzle?

Friday, May 20, 2022

How Much Can They See?
Math and Logic

How Much Can They See?

Art needs protecting and so art galleries need guards. How many does this one need?

Thursday, May 19, 2022

Pasta, Pronto
Science and Engineering

Pasta, Pronto

"A watched pot never boils" is about psychology, not physics — how can we actually get water to boil sooner?

Series 3 of 4

Wednesday, May 18, 2022

Cool, Cooler, Coolest
Science and Engineering

Cool, Cooler, Coolest

Adding cold water to hot tea will help to cool it down. When should we do it?

Tuesday, May 17, 2022

Find the Pattern
Math and Logic

Find the Pattern

Mathematics is the art of reasoning about patterns, and not all patterns are numerical. What completes this pattern?

Monday, May 16, 2022

Draw the Line
100 Day Challenge 2020

Draw the Line

Adding additional lines to a diagram can turn a challenging problem into something far simpler.