Chemdle

Each day brings a curated organic chemistry problem, covering topics from named reactions to steps in total synthesis, with six attempts to reach the answer. Structures are entered with a built-in molecule editor, with a choice of Ketcher or Marvin. Hints may be offered, and an archive and community submissions are available.

How you play

Draw or paint, Trivia questions

Languages

English

Daily puzzle

Yes

Archive

Yes

• 6.7
  Beat Darwin

  Identify the species shown in a photo
  Play
• 6.7
  Brainer

  Answer a TV-show-style trivia quiz
  Play
• 6.7
  Capybaropolis

  Identify the animal from clues and a photo
  Play
• 6.4
  Fashionguessr

  Identify runway shows and answer fashion trivia
  Play
• 6.0
  AtomixQuest

  Solve a periodic table challenge
  Play
• 5.7
  Gemdle

  Identify crystals and gemstones from photos
  Play
• 5.6
  Linnaeus

  Classify a species down the tree of life
  Play
• 4.7
  fanimoji

  Match the right emoji to each animal trait
  Play