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
  • deblu deblu set a new record of 168 seconds on puzzle #44234 May 24, 2019, 6:50 pm
  • serenia serenia set a new record of 195 seconds on puzzle #40523 May 24, 2019, 6:06 pm
  • anamsc anamsc set a new record of 79 seconds on puzzle #57697 May 24, 2019, 5:26 pm
  • babs528 babs528 set a new record of 138 seconds on puzzle #41545 May 24, 2019, 4:48 pm
  • bonbon23 bonbon23 set a new record of 220 seconds on puzzle #63613 May 24, 2019, 4:16 pm
  • comet56us comet56us set a new record of 173 seconds on puzzle #17996 May 24, 2019, 4:11 pm
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