Welcome to Logic Puzzles!

Welcome to the world's largest web site devoted to logic puzzles! We've got more than 25,000 unique puzzles available for play, both online and the old fashioned way - with pencil and paper. Feel free to solve online just for fun, or, for an added challenge, register a free account and compete against thousands of other solvers to make it into our Logic Puzzle Hall of Fame!

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What is a Logic Puzzle?

Example Logic Puzzle Grid

Logic puzzles come in all shapes and sizes, but the kind of puzzles we offer here are most commonly referred to as "logic grid" puzzles. In each puzzle you are given a series of categories, and an equal number of options within each category. Each option is used once and only once. Your goal is to figure out which options are linked together based on a series of given clues. Each puzzle has only one unique solution, and each can be solved using simple logical processes (i.e. educated guesses are not required).

A custom-labeled grid is provided for every puzzle, like the one you see to the right. The grid allows you to cross-reference every possible option in every category. You can eliminate pairs you know aren't true with an X, and pencil in pairs you know are related with an O. If you know, for example, that Lauren wasn't born in 1961, you can add an X in the box where the Lauren column and 1961 row meet. Similarly, if you know that Bryant was born in 1971, you can add an O in the appropriate box. Furthermore, since every option can only be used once in any given puzzle, you can eliminate the four other options for Bryant in that category (1937, 1946, 1961, 1975) and the four other options for 1971 (Anahi, Jayden, Lauren and Nikolas).

Continue doing this for every clue you're given. Eventually you will have filled in enough X's and O's on the board that you will then be able to use simple logic to deduce the solution to the puzzle. For example, if A = B, and B = C, then A must equal C. Similarly, if A = B, and B =/= D, then A must not equal D.


Logic Puzzles for iPad and Android Tablets

The logic puzzles you've come to love from Puzzle Baron, now on your favorite tablet! New features like multi-level undo, auto-x abilities and custom error checking make logic solving a breeze. Try it now on your favorite tablet by choosing the appropriate link below!

   



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:

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 »

Competition Timer
  • babs528 babs528 set a new record of 74 seconds on puzzle #38226 April 22, 2019, 5:08 pm
  • chasgoose chasgoose set a new record of 230 seconds on puzzle #14150 April 22, 2019, 4:56 pm
  • blakenagel blakenagel set a new record of 138 seconds on puzzle #22117 April 22, 2019, 4:16 pm
  • blakenagel blakenagel set a new record of 152 seconds on puzzle #11708 April 22, 2019, 3:39 pm
  • chelsini chelsini set a new record of 146 seconds on puzzle #17641 April 22, 2019, 3:14 pm
  • deblu deblu set a new record of 192 seconds on puzzle #45813 April 22, 2019, 1:05 pm
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