Every Seeker offers two statements, and exactly one in each pair is false. Untangling which half of each pair holds up is the whole puzzle: a knights-and-knaves twist on the morning mystery. One of five styles of the daily logic puzzle. Also try the lineup grid puzzle, or browse past mysteries in the archive.
Tonight's mystery is being arranged.
A Morning Mystery is a logic-grid deduction puzzle: a short scenario, a cast of suspects, and a handful of clues that fit together exactly one way. Read the clues, rule things out on the grid, and name the culprit. Most take about ten minutes.
You solve it by elimination, never by guessing. Every clue removes possibilities; mark what a clue rules OUT and the answer emerges from what's left. If you get stuck, a hint narrows the grid for you; taking one costs time on the leaderboard but never blocks the solve.
A new mystery posts every morning, and the deduction style rotates: the classic grid, dual-category grids, directional map puzzles, paired-statement truth-tellers, and lineup ordering. Dani's Diabolically Difficult Deduction is the same day's puzzle at maximum difficulty, for people who want a fight.
Every puzzle prints. The daily pack collects the day's sheets with an answer key at the back, and past mysteries stay playable in the archive. Solving an old one just won't land on that day's live leaderboard. Free, no account needed; signing in only saves your solve times and streak.
In this style every Seeker says two things, and exactly one of the two is false. There is no single liar to find. Your job is to work out which half of each pair holds up, and the true halves fit together into the one solution.
It differs from a liar day, where one guest lies in everything they say. Here every guest tells one truth and one lie, so you can never throw out a whole statement-giver. It is the same idea as a knights-and-knaves puzzle, with a twist that keeps you checking both halves.
A solving tip: pick a Seeker and assume their first statement is true. That makes the second false, so follow both consequences through the other clues. If you hit a contradiction, flip the assumption and the other half must be the true one. Because the answer is always reachable by elimination, a contradiction is progress, not a dead end.
New to logic grids? The full Morning Mysteries guide has a worked example and answers to common questions. You can also browse every logic puzzle on the site or play past mysteries from the archive.
One of the characters in a Morning Mystery. You work out what each Seeker did, sold or said. More in the glossary
A logic puzzle where each Seeker says two things and exactly one is true. More in the glossary
A Morning Mystery where each Seeker says two things and exactly one is false. More in the glossary
Two facts that cannot both be true. Reaching one tells you an assumption was wrong. More in the glossary
Working out a fact for certain from the clues you already have. More in the glossary