🧠 IQ Puzzle Challenge

IQ-style puzzle games, just for fun

IQ Puzzle Challenge is a free set of pattern puzzles, like the picture grids you might see on an intelligence test. Each one shows a 3 x 3 grid with the last piece missing. Look at how the shapes change across the rows, work out the rule, and pick the piece that fits. There's no download and no sign-up, and every answer comes with a short explanation, so you get better as you play.

This is not a real IQ test

It's worth saying clearly: this game can't measure your IQ, and it doesn't try to. Real IQ tests are carefully designed, are tested on large numbers of people and are given by trained professionals. Plenty of websites claim to give you an IQ score in a few minutes, but those numbers don't mean anything. Here, you just get points and stars for fun. If you're getting stars, then you're practising a useful skill, and that's the whole point. And if you're stuck, it doesn't say anything about how clever you are. Pattern puzzles get much easier with practice, as you learn the kinds of rule to look for.

What are matrix puzzles?

The puzzles in this game are known as matrix puzzles. They're popular in intelligence tests because they use pictures instead of words, so they don't depend so much on how well you read. The best-known examples are Raven's Progressive Matrices, which were developed in the 1930s by psychologist John C. Raven. All of the puzzles in our game are generated by computer and are our own. They use just a few simple building blocks: the shape, how many of them there are, how they're shaded and which way an arrow is pointing.

How to solve pattern puzzles

Look at one thing at a time. Ignore everything except the shape, and see what it's doing along the row. Then do the same for the number of shapes, then the shading. Look for these rules. A thing might stay the same along a row. It might go up by one at each step. Or each row might use the same three shapes in a different order. That last one is the most common, and the easiest to miss. Test it on the next row before you trust it. Rule out wrong answers. When one rule tells you the shape, cross off any piece with the wrong shape. Often that leaves only one or two.

Three levels

Warm-up changes one thing in each grid, so you can learn the kinds of rule. Two Rules changes two things at once, and it opens at 4 stars. Three Rules opens at 12 stars, and it adds a little arrow that turns as you go along. Each round has 12 puzzles from a bank of 30 in each level, and it shows you ones you haven't seen first. You can play with no clock, or against 20 seconds a puzzle for bonus points.

Print puzzles for class

Teachers and parents can print the whole set of puzzles, with or without the explanations, using these buttons. Pattern puzzles make a great wordless activity for mixed-ability groups, and for children who are still learning English, because there's nothing to read.

A worked example

Imagine the top row shows one circle, then two circles, then three. The second row shows two squares, then three, then four. That's enough to guess the rule: the number of shapes goes up by one along each row, and the shape stays the same along each row. The third row starts with one triangle and then two triangles, with a question mark at the end. Apply both rules and you know you need three triangles. Now look at the four pieces. One might have three circles, which has the right number but the wrong shape, and another might have four triangles, which has the right shape but the wrong number. The wrong answers are built to catch people who only spot one of the rules, so always check every rule before you choose.

Do brain games make you smarter?

Scientists have studied this question for years, and the honest answer is that it's complicated. Practising a puzzle clearly makes you better at that puzzle. There's much less evidence that it makes you better at everything else, and big claims from brain-training companies have been challenged. We think that's fine. Puzzles are worth playing because they're fun, because they give you the pleasure of working something out, and because they teach useful habits like looking carefully, testing your ideas and not giving up at the first try. Those are good reasons on their own, without any promises about your IQ.

More brain games

For more logic, try Logic Grid Detective, Math Cages or Picture Logic. To exercise your memory and concentration, try Brain Gym. Every puzzle is on the Brain Games page.

Free and safe

IQ Puzzle Challenge is free to play, with no download, no sign-up and nothing to buy. There is no chat, and your progress is saved only on your own device. See the Parents & Safety page for more.

Frequently asked questions