Catriona is a maths teacher who started drawing puzzles in the summer of 2018. Kat is a designer here at Gradino who first put this collection of 2018 puzzles together as a gift. After sharing the collection on Twitter, you asked us where you could get your hands on a copy. We listened and here it is, your chance to own 85 of Catriona’s beautiful puzzles printed in full colour.

There are no new puzzles here – everything in this book appeared on Twitter at some point in 2018. All have been creatively solved in several ingenious ways by different people, and we’ve included the date each puzzle was posted in the hope that this will make it easier for you to find these solutions online, and add your own! For those times when you don’t have an internet connection, there are numerical answers at the back of the book.

If there’s a puzzle you particularly enjoy, or need a hint for, tweet Catriona!

Happy puzzling!