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A Mathematician’s Guide to Wordle

We invited mathematician and wordplay fan Ali Lloyd to share his thoughts on hit internet word game phenomenon Wordle. If you’re not familiar with the game, we recommend you go and have a play first.

Photo of a mastermind board, showing coloured pegs in rows.
CC BY-SA ZeroOne

When I first saw Wordle I said what I saw many other people subsequently say: “Oh, so it’s a bit like Mastermind but with words? That’s a neat idea”. 

Mathematical Objects: Arbelos with Catriona Agg

Mathematical Objects

A conversation about mathematics inspired by an arbelos. Presented by Katie Steckles and Peter Rowlett, with special guest Catriona Agg.

Catriona mentions this proof without words, which is taken from Proof Without Words: The Area of an Arbelos by Roger B. Nelsen in Mathematics Magazine.

Arbelos by Catriona Agg


Equatum puzzles – a chat with Justin Roughley

Equatum is a new puzzle format invented by mathematician Justin Roughley, and is now available in the form of a book. We chatted to Justin about his life and his puzzles.

Alex Bellos – The Language Lover’s Puzzle Book

The Language Lover's Puzzle Book - front cover image

If you’re a fan of maths (which we assume you are, if you’re reading a maths blog), you might be familiar with Alex Bellos from his excellent popular maths books, including Alex’s Adventures in Numberland and the follow-up Alex Through The Looking Glass; you might also enjoy his more recent forays into puzzle books, including Can You Solve My Problems, and Japanese logic puzzle collection Puzzle Ninja, as well as his regular Monday puzzle column in The Guardian.

For his latest book, The Language Lover’s Puzzle Book, Alex has focused on language puzzles, largely drawn from the linguistic equivalent of Maths Olympiads (which he’s gotten really into lately). It’s a hefty volume split into cleverly collected sections on different aspects of language – including how languages are constructed, how words are pronounced, and as you might expect, the origins of how language is used to communicate numbers.

Podcasting about: Odds and Evenings Podcast

In this series of posts, we’ll be featuring mathematical podcasts from all over the internet, by speaking to the creators of the podcast and asking them about what they do.

We spoke to Alaric Stephen, maths teacher and one of the two hosts of the Odds and Evenings podcast, along with Alex Mayall.

A paper version of the Seven Triples puzzle

Last year I wrote about a 3D-printed puzzle I’d designed, called Seven Triples.

At work we want to use this puzzle during an A-Level enrichment day, which means we need about twenty copies of it. I 3D-printed four copies over the course of a couple of weeks, in amongst other jobs, and I don’t have the patience to do any more. So, I’ve made a 2D version that we can print and cut out much more quickly.

Triangles arranged in rows. Each triangle is filled with one of seven patterns. There are white, yellow and magenta triangles.