Celebrating twenty years
Science and chemistry-themed puzzles, including wordoku, quick and cryptic crosswords. Test your chemistry knowledge and puzzle-solving skills
Grab your periodic table - this jumbo cryptic chemistry crossword only uses letters found in elemental symbols
Can you find the Nobel prize winner in the answers to this cryptic crossword?
Can you work out the anagrams and brain teasers in the clues of this cryptic chemistry crossword?
We’re confident you can puzzle out the answers to this cryptic crossword
You’ll need chemistry knowledge and more to solve this cryptic crossword!
Mammals, birds and a Norse deity lurk in this cryptic puzzle
All cryptic crosswords
Do you have the knowledge to finish this quick crossword?
From French physicists to fantasy authors, can you solve this quick crossword?
Want a brief puzzle break? Try out this quick crossword!
Are you up to the task of completing quick chemistry crossword #22?
A special end-of-year jumbo quick chemistry crossword
Fancy a little challenge? Here’s quick crossword #021
All quick crosswords
Sharpen your problem-solving skills with this sudoku-style puzzle
Can you solve this sudoku-style letter puzzle and unscramble the art-collecting chemist?
Solve this interactive puzzle and find the former president of the Chemical Society
Can you identify the metal from the hallmark? It’s also hiding in this puzzle…
Who is hiding in this sudoku-style puzzle?
Solve this wordoku and unscramble the common amino acid hidden within
All wordoku puzzles
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