September 20, 2024


In the recreational math world, puzzle advent calendars are a thing. One of my favorites is produced by Mathigon, a beautiful free website for students, teachers and self-learners, and from which I chose today’s puzzles. Happy solving, everyone!

1. The knights move in.

How many knights can be placed on the board so that no knight attacks another knight?  A chess knight jumps two squares horizontally/vertically and one to the side.
In other words, how many knights can be placed on the board so that no knight attacks another knight? A chess knight jumps two squares horizontally/vertically and one to the side.

2. Round the missing number.

puzzle-2

3. Are you square?

puzzle-4

4. Hexagonal, hexagonal, hexagonal.

puzzle-5
Balls can only move downwards ie no bounce back!

5. Satsuma segment.

puzzle-3

I’ll be back at 5pm UK with the answers.

NO SPOILERS. Please reserve your favorite knights.

Thanks to Mathigonwhich belongs to international edtech firm Strengthen. Mathigon is one of the most engaging and creative math resources on the web, and it’s free. Check it out!

I’ve been doing a puzzle here on alternate Mondays since 2015. I’m always on the lookout for great puzzles. If you want to suggest one, email me.



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