Conspiracy Puzzles

There's a conspiracy afoot!

It's your job to investigate a collection of suspicious persons and, using nothing more than pure logical deduction and spatial reasoning, see if you can use a series of given clues to separate the innocent from the guilty. Each conspiracy puzzle has one, and only one, unique solution that can be reached by pure logical reasoning - guessing and trial and error are never required.

We've got thousands and thousands of unique conspiracy puzzles here for you to solve. You can play for fun, or register a free account to get your scores saved and listed at the end of each puzzle.

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How to Play

Click or touch any suspect's card one to mark them as innocent, or twice to mark them as guilty. Click or tap a third time to return a suspect to "unknown" status. You can cross out clues you've already used by clicking or tapping on them, and hints are always available if you get stuck.

Tips and Hints

• Most clues won't immediately give away a guilty person - you'll usually need to use two or more clues in conjunction in order to reveal a person's guilt or innocence.
• Clues that mention a suspect's "neighbors" are referring to all other people who are immediately adjacent to that person in the grid, including those who are diagonally adjacent.
• Clues that mention a suspect's "line of sight" are referring to all other people also in that suspect's row and column. (Remember: a suspect is never in his or her own line of sight!)
• Hints are always available if you get stuck!

Start a New Puzzle »

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Why Register a Free Account?

You'll never have to register an account to play on this site, but there are several reasons you may want to play as a registered user:

• IT'S FREE!     :-)
• Monthly Competitions - registered players are automatically entered into our monthly scoring competitions, and are eligible for our Hall of Fame listings. Record solve times are also kept exclusively for registered members.
• Resume Puzzles - save your progress on any puzzle and return to finish it later anytime within 24 hours.
• Premium Upgrades - registered users are eligible for premium upgrades which remove all advertising from the site and result in a noticeably larger playing area on the puzzle solving page.

If any or all of the above features sound good to you, click on the button below to register for a free account:

Register for Free »