Chemistry puzzles
Science and chemistry-themed puzzles, including wordoku, quick and cryptic crosswords. Test your chemistry knowledge and puzzle-solving skills
Our puzzles are sponsored by Shimadzu, a global leader in precision analytical instrumentation.
Shimadzu celebrate their 150th anniversary in 2025
Our top puzzle
Quick chemistry crossword #100 - Shimadzu special
Search for solutions in this special Shimadzu-themed quick chemistry crossword
Cryptic elements jumbo CrOsSWORd 2025
Solve this particularly puzzling crossword and you’ll feel like a ’King who’s rich within (5)’
Cryptic chemistry crossword #116
We hope that doing our cryptic chemistry crosswords isn’t ’Pure torture now and again (4)’
Cryptic chemistry crossword #115
Can you find the ’Odd extra letter (3)’ in this cryptic chemistry crossword?
Cryptic chemistry crossword #114
’Some find I got colour (6)’, but will you find the solutions to this cryptic chemistry crossword?
Jumbo quick crossword 2025
An extra large edition of our quick chemistry crossword
Nobel prize crossword 2025
Test your Nobel nous with this chemistry-themed crossword
Quick chemistry crossword #099 - Lab Innovations 2025 special
Look ahead to this year’s Lab Innovations event with a bumper quick crossword.
Quick chemistry crossword #098
From a mission to Saturn’s moons to a marine mollusc, this quick chemistry crossword will test your knowledge
Quick chemistry crossword #097
This quick chemistry crossword condenses clouds of ions, a dash of Queen Anne’s lace, and a liqueur-laced current into one electrifying challenge.
Chemistry wordoku #125
See 2025 out with an alkaloid hidden in a sudoku-style puzzle
Chemistry wordoku #124
You may need to go out of your depth to find the seawater-studying geochemist hidden in this sudoku-inspired puzzle
Chemistry wordoku #123
Seek the Swedish chemist and mineralogist in this sudoku-style puzzle