Home›Ciphers›Four new locks+ Follow CiphersSaveCipher · Monday 31 August 2026ListenFree browser voice. Starts at once.Uses text-to-speech.1xOptionsReaderAgentFour short locks. Work them in order.Original illustration, The Gold Standard art desk (Pablo Picasso).DownloadOpen in new windowRead nextCiphersThe black box was AustralianTen puzzles on Australian inventions, from ASCII hex to an ADFGX closer. Answers are hidden at the foot.CiphersDead drop in a hollow coinTen puzzles built around the 1953 hollow nickel spy case in Brooklyn, from Morse code up to a tough double transposition. Answers are at the bottom.CiphersOrbit before breakfastTen short space puzzles about the ISS and its orbit, from the phonetic alphabet up to an autokey closer. Answers are at the bottom.CiphersThe Nullarbor straightTen short puzzles about the Nullarbor railway, from tap code up to a four-square closer. Answers are at the bottom.More in Ciphers →Say hello in our guest bookPublishedCipher·Monday 31 August 2026 at 2:30 am Adelaide, open calendar·1 min readShare this story•••Email this story to a friendCopy link insteadThis desk has not corrected this file. Corrections.The paperCommentsNo notes on this story yet.Sign in to comment
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