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Twitch streaming, abacuses and Pascal's secrets feature in our AW23 issue! Plus all your favourite puzzles & columns.

We find out more about the charity's work to support maths education in prisons.

We review the fourth of this year’s nominees for the Book of the Year

We review the third of this year’s nominees for the Book of the Year

We reveal the shortlist

In 2018, scientists discovered a new shape that is essential to multicellular life