Did ‘u’ solve it? Wordplay meets numberplay

The answers to today's lexical perplexities, and the Pilish prizewinner

Earlier today I set you these problems (and a challenge) about constrained writing, a literary form in which a text must conform to mathematical rules.

Here are the puzzles again, with solutions. And below you will discover who won the Pilish challenge - judged by Sarah Hart, author of the fab new book Once Upon a Prime, about the links between maths and literature.