For grown-ups who miss maths
Come back to mathematics.
One good problem a day. A club of six to think it through with. A notebook that remembers every hour you reclaim.
Free, always. We charge only for in-person festivals.
How it works
Try the daily problem
One problem, no timer, no score. Hints if you want them.
Take a seat at a table of six
Matched softly by city and interests. Small enough that you’re missed when you’re quiet.
Learn a little, then solve one problem
A short lesson leads to the day’s problem, and your club talks it through.
Chew on the month’s big question
One research question stays pinned all month. A mentor drops in; Lemma, an AI assistant, gives hints when asked.
Meet your city at a maths mela
A team marathon every month. Festivals when enough of you share a city.
A table of six
Small enough to be missed
Six people, matched softly by city and interests, with a mentor who drops in and an AI assistant that speaks only when asked. The same faces every day, so a conversation can build over a month.
What you won’t find here
Ranks or leaderboards
Countdown timers
Streaks to lose
Adverts
Your notebook keeps time reclaimed, not scores.
Mathematician of the day
Maryam Mirzakhani
She won gold at the International Mathematical Olympiad in 1994 and 1995, the second time with a perfect score.
In 2014 she became the first woman to win the Fields Medal, for her work on curved surfaces. This photo is from that year.
Gert-Martin Greuel, CC BY-SA 2.0 de, via Wikimedia Commons (resized)
Meet more of the people behind the ideas in the gallery of mathematicians.