Chemistry puzzles

Science and chemistry-themed puzzles, including wordoku, quick and cryptic crosswords. Test your chemistry knowledge and puzzle-solving skills

Our top puzzle

Cryptic crossword grid 090

Cryptic chemistry crossword #090

Sponsored by , By

Tin, toxins, and tricky turns of phrase all show up in this cryptic chemistry crossword. Can you solve it?

Cryptic crossword grid 098

Cryptic chemistry crossword #098

Sponsored by , By

Lay aside leathery liquid (5) and spend some time on this cryptic crossword

Cryptic crossword grid 097

Cryptic chemistry crossword #097

Sponsored by , By

Stretch some winning sides (7) and see if you can complete this week’s cryptic chemistry crossword

Paul Board

How I became the crossword compiler for Chemistry World

Sponsored by , By and

Paul Board has been setting Chemistry World’s crosswords for over 15 years. To celebrate the centenary of the (fully) cryptic crossword, he explains his crossword setting process and dissects some of his favourite science-based clues  

Cryptic crossword grid 096

Cryptic chemistry crossword #096

Sponsored by , By

This puzzle might give you a ‘happy moment when working’ (6)

Quick crossword grid 098

Quick chemistry crossword #098

Sponsored by , By

From a mission to Saturn’s moons to a marine mollusc, this quick chemistry crossword will test your knowledge

Quick crossword grid 097

Quick chemistry crossword #097

Sponsored by , By

This quick chemistry crossword condenses clouds of ions, a dash of Queen Anne’s lace, and a liqueur-laced current into one electrifying challenge.

Quick crossword grid 096

Quick chemistry crossword #096

Sponsored by , By

This quick chemistry crossword covers codebreaking, chemistry, and ecclesiastical architecture.

Quick crossword grid 095

Quick chemistry crossword #095

Sponsored by , By

From niobium to Nobelists, meet chemists and revisit the lab where the pH scale was born in this quick chemistry crossword.

Quick crossword grid 094

Quick chemistry crossword #094

Sponsored by , By

Ready to chase Nobel discoveries and trace molecular mysteries? Give this quick chemistry crossword a solve!

Wordoku grid 106

Chemistry wordoku #106

Sponsored by , By

Stirring stuff in this week’s wordoku sudoku-style puzzle

Wordoku grid 105

Chemistry wordoku #105

Sponsored by , By

The author of the first text on chemistry is written through this sudoku-style puzzle

Wordoku grid 104

Chemistry wordoku #104

Sponsored by , By

 There’s a chemist with an interest in chiral nanomaterials hiding in this letter-based puzzle