How many squares indeed

This is neither video game, nor film related but since it’s my site, I can do what I like with it.

You see, there’s this image floating around the social inter-tubes of a grid of different size squares and the question all the posters pose is “How many squares do you see?”. Some only count 24, others 32 or 36, but the correct answer is 40. And each time I answer 40, I get the same response: “I just don’t see it”.

So, either because I feel like doing a public service, or because I just want to see this dumb debate put to rest (or maybe because I figure this might be a good way to drive traffic to our modest little site), please join with me in counting the flashing red squares:

40, no more, no less

Christopher Kirkman

Christopher is an old school nerd: designer, code monkey, writer, gamer and Star Wars geek. As owner and Editor-In-Chief of Media Geeks, he takes playing games and watching movies very seriously. You know, in between naps and watching TV.

333 Responses

  1. michael williams says:

    you guys left out the smaller squares adding up to an additional square making it a total of 42 squares, how can you publish this as if it is fact and you are completely wrong lol

    • jeremy says:

      Are you talking about squares 17 and 18?

    • Hi Michael, I’m pretty certain the two you describe are highlighted in the animation above as Jeremy pointed out. If not, grab a screenshot and color in the squares that I missed and I’ll be happy to post an update and credit your find.

      • starknerd says:

        Christopher,

        I found the forty after a bit of mind crunching/relaxing/and rethinking. The 3×3’s escaped me for awhile. Thanks for posting the animation. Very cool. (((And you were a whole lot nicer to Michael than I would have been.)))

      • Cindy Z. says:

        Thanks so much for this animation Christopher. I was trying to explain the answer of 40 to my friends. I posted some other pretty good answers on my wall, but this one anybody can follow & understand. Some insist that there are 44, but I don’t see it, & some self-proclaimed geniuses say that there are only 16 true squares because you can’t count the ones broken up by lines. I am not a genius or math expert by-far, but I think that square can be made up of smaller squares, so when it says “how many squares”, it means all, not just those with no lines.

        • egonhue956 says:

          i also see 44

        • Brad says:

          You are right because the groups of squares people are saying can’t be counted because of intersecting lines is actually wrong because if you look at the perimeter of those groups, they are solid lines and haven’t been counted yet.

      • Christal says:

        In fact there are only 16 true squares. All the other squares shown actually have lines going through them therefore making them not perfect squares. But that’s my opinion, probably thinking too much inside the box instead of outside.

        • Wayne says:

          Christal – I agree but don’t classify myself as a genius. The way I see the graphic once you count past 16 you are counting squares that have already been counted .. that is if you are willing to accept the premise that a “square” can have intersecting lines.

          • Matt says:

            Between any two points there are an infinite number of intersecting lines at infinite different angles.

        • Michael says:

          It doesn’t matter if there is a line going through it, it is still a square.

          • Ted says:

            Bizarre definitions of squares going on here. People clearly didn’t pay any attention in geometry. The fact that there are intersecting lines on a plane does not mean that a plane figure with four equal straight sides and four right angles isn’t still a square. It’s amazing to me that people are clearly and graphically shown the answer to a fairly simple puzzle and they still want to make bizarre arguments.

      • Frank Ward says:

        cool animation
        but it does not highlight the 40th square being the entire outside square.

    • Verena S. says:

      what are you talking about? which “smaller squares”? put a graphics up somewhere, smartie

    • Cindy Z. says:

      No, they counted those.

    • Buck says:

      Thank you! I thought I got ‘em all but missed 4

    • Mark says:

      If you are referring to the two sets of four squares that make two squares, I counted those when I got 40. If you are getting more than forty, you are probably counting some squares more than once or including rectangles.

    • derpderp says:

      do you always count things twice?

    • Sean says:

      I go 40. I’d like to know what two you are talking about :)

    • mgb says:

      Idon’t see 41 & 42? Explain thoroughly please =)

    • brenda shannon says:

      why isn’t anyone counting the square that make up the whole puzzle? that would make 41.

    • Mike says:

      Didnt you watch the answer the 2 small squares were counted after 16. Way to spout off about yourself being so wrong. Think before you speak next time!

    • Michael Willams is a Retard says:

      What the hell are you talking about there are only 40 squares.

    • Kevin says:

      They missed nothing out, I been going over this puzzle for months, I thought it was 36, until a maths teacher showed me and gave me the answer in another link, the correct answer is 40 squares

    • miok says:

      they counted all the squares. you must be drunk…again

    • Michael says:

      What are you looking at, the answer is even up there. This proves that people will argue even in the face of pure facts. it is 40 genius.

    • David says:

      Actually he did, you retard. You counted those squares twice.

  2. Tracy says:

    I’m not sure how you’re getting only 40. I tilt my laptop screen back and see lighter squares inside of the black bold squares. (seems like a rough draft)The total count I have is 50. When I tip my screen back, the first square does not have an inner square. The rest of the squares do have the second inner square which adds up to 30. (15 squares x 2 inner squares each=30)
    Now, the 2 center squares each have 4 squares. Those 4 squares have the lighter squares inside of them. And then counting those 2 squares alone.
    That total is 18.
    Then we have the square at the lefthand top that does not have its’ inner square so that is counted alone. The outer square which is holding them all in.
    30+18+1+1=50
    I could be reading too much into it. However, the game didn’t specify what counted and what didn’t :) A square is a square is a square!

    • Steve says:

      Don’t you think that “tilting your screen back” is by definition “reading too much into it”, or adding a variable that may not be consistent across different types of computer screens? Thanks for the graphical “40” explanation BTW!

    • Well, if you’re looking to read too much into it and get technical, this image is made of of hundreds of thousands of square pixels that make up hundreds of thousands of squares when combined, but this puzzle comes from a good old fashioned geometry puzzle, probably drawn with a good old fashioned pencil, on good old fashioned paper.

      So, assuming this was a simple drawing, you would be able to trace over 40 squares using the lines laid out in the illustration.

    • Jon says:

      If I cross my eyes I see double so there are actually 80. Ha!

    • adam says:

      the way you are counting is going too far. what about the border, or the web page, or each pixel, or the screen? i guess with current resolution of my screen, there are about 1366×780 squares. no. there are 40 squares. 8 – 1/4 size, 18 – 1×1, 9 – 2×2, 4 – 3×3, 1 – 4×4. therefore, 18+9+8+4+1= 40. easy

    • Mark says:

      You’re creating an optical illusion when you tilt your screen. Just think of this puzzle as it was when originally created on paper years ago.

    • Tom says:

      I don’t think the “rough draft” squares are meant to be counted, since they don’t show up on everyone’s computer.

    • william montgomery says:

      The lighter squares are ghost images from a poor scan of the original. Common with lower quality scanners.

    • John Smith says:

      The lighter squares you are seeing (and bare with me on this because it’s going to get very technical) are in fact artifacts resultings from the jpeg image compression (lossy algorithm). This occurs because jpeg algorithms tend to smooth areas where there’s high contrast transitions, thus creating the gray areas between the black lines and the white background. This helps achieving greater compression ratios but the tradeoff is loss of image quality/fidelity. That’s why jpeg is usually not a very good candidate for images with lots of text and charts (there’s lots of high contrast colors between text and backgroud; large one colored areas are not well handled). One can use lossless image formats such as png (or even jpeg but the lossless version which is not mainstreamed yet, probably due to some legal aspects related to the usage of such algorithms). Lastly, I counted 40 squares. :)

      • You make several good points and really aren’t far off, except for one thing…. The image is an animated GIF. :)

      • baritonium says:

        You know, I would have thought your comment was intelligent, but you said “bare” with me. Really? Do you want me to get naked with you? Is your comment just a big complicated come-on?

        Make sure you know what words to use if you’re trying to sound smart or you will fail.

    • miok says:

      you must be drunk too…again

    • emmy says:

      You seem a bit “tipsy”.

    • Bolter says:

      Yeah, Tracey is right, but there is even more. I counted the squares across the top of my screen I got 1366 squares, and going down there is 766. My screen even says there is that many “pixels”, whatever that means. I have lost count at 1,049,088. Genius Tracey, the answer is 40.

    • Dave says:

      Tracy, what kind of hallucinogenic drugs are you using? 42 squares. You think inside the box outside of the square. Then you can see all the cubes. Since they all have lines in them then, the last 2 have lines inside them.

  3. kimmy says:

    looks like there might be some artifacting in that image, but all you should be counting is the black outlined boxes, not any kind of anti-aliasing or negative image when you flip your screen to different angles. 40 makes sense to me.

  4. dennis says:

    i see a total of 43…the extras i see are at #17, #18 and #31

  5. Trevor K. says:

    I call bullshit… There is, arguably, 80, not 40. The reasoning for my argument is set theory; Yes, there is 8 .5x.5 squares, yes there is 18 1×1 squares, yes there are 9 2×2 squares, and 4 3×3 squares, and 1 4×4 square, however there is also negative space which is in the shape of a square as well, this would instantly double the count. Why exclude one from being counted, and allow the other?

  6. Randy says:

    What about the square created by using your #28 and deleting #17 from it? That adds two more…likewise, another unique square type can be formed combining your #1, #2, #3, #4, #5, #8, #9, #12, #13, #14, #15, #15…additional variations of this total 5 additional squares.

    Grand Total 47 that I can find.

    • Randy says:

      Whoops…small typo…should be #13, #14, #15, #16…

      • jonathan says:

        umm…that’s not a square, randy. that’s a toroid.a square-boundaried toroid to be sure, but it asked how many squares, not how many squares and toroids.

        • Randy says:

          Point conceded! I am back to 40…and seriously considering the point that squares, technically, should not have lines through them…leaving a count at 16. Fun puzzle!

          • Beth says:

            If you were to only count squares without lines through them, there would only be 8 squares, not 16. Just an observation…

        • Randy says:

          I stand corrected! 40 it is! Although, someone’s point about the squares with lines going through them should technically count…an interesting point for sure. Fun puzzle!

          • Randy says:

            Sheeez…”SHOULDN’T count”…not “should count”.

          • Beth says:

            Wish I could reply to my own post…and I’m back to 16 “real” squares…forgot the teeny ones in the middle.

            But I still think 40 is the correct answer.

        • dawn says:

          Wouldn’t it be a square-boundaried annulus?

  7. Dawn says:

    I agree with Dennis. I see 43, but i’ve been told that I’m wrong and that the only squares that should be counted are solid squares.

  8. Mark says:

    Dennis, 16,17, and 31 are already in the count. Why would you count them twice? Making the total still 40.

  9. Mark says:

    Trevor, I don’t think the spirit of the game is to include each square twice based on the thickness of the pencil.

  10. Michael says:

    You can only really count the lines, as the “negative space” is divided up by the lines. If you wanted to count negative space squares as well there are only 16 proper ones, making 56.

  11. Erika says:

    You missed 5. There are the four 2X2 squares in the corners and the one in the centre. So I got 45.

  12. Kilahill says:

    Am I the ONLY one that counts 16 squares? A REAL square should have NO lines in the middle of it. Why am I the ONLY one that counts this as a REAL square?

    THINK PEOPLE! THINK!

    • Mike says:

      No, that would be 16 (though I thoroughly disagree with you on premise).

      There are the 4 squares along the left side and 4 along the right to give us 8.

      Then there are the 8 mini-squares.

      That makes a total of 16

      • Jon says:

        The definition of a square is ‘A shape having four equal length sides’. It says nothing about what is inside that shape, it only defines the sides. Therefore a square divided by any number of lines is still a square.

        The answer is 40 and YOU are and Idiot.

        • Mike says:

          Why am I an idiot? I was simply following his logic (he originally stated 12, I believe). I made that clear by saying, “I thoroughly disagree with you on premise.”

        • Coach says:

          Now why would you call this person an idiot? Uncalled for. We are all just having fun. Apologize, my goodness.. Show some class and sportsmanship in this mind-bender game…

    • Cindy Z. says:

      No, you’re not the only one in the entire world to come up with that answer. Read some of the comments, & you will see that. But I don’t agree that a square with smaller squares inside of it is no longer a square. That would mean that a checker board is not a square because it has smaller squares inside of it. What would you call the shape of a checker board? I could not find anything supporting your claim. Please post a link proving that a square is not a square if it has lines through it. And I think that your cocky, superior attitude sucks! Like you’re a genius & the rest of us are slumped over dragging our hairy fingers across the ground.

      • Kilahill says:

        Why so serious? lol

        If a line is inside a square, then that square is broken up. Sure it’s still technically a square, but the INSIDE is NO LONGER a square.

        But, remember this, there seems to be no rules for this game, so actually no one is right. Which is actually quite stupid, because brainteazers should have a logical answer. But, ones like this one open up discussion, which is fun. I was having FUN with my comments, but people like you take them too serious. I was serious about my answer of 16, but NOT about the rest. Just relax.

        Oh, and the answer is still 16. lol

        • Courtney says:

          Technically if you are basing that a square has no lines through it then it would be 17 squares because of the outer box. All the lines hit it perpendicular and not run through it.

        • Ted says:

          The INSIDE was NEVER a square. The SQUARE IS DEFINED BY THE LINES.

          This is really quite a nonsense argument.

      • Pandy says:

        … a grid?

      • Bob says:

        http://www.math.cornell.edu/~hatcher/Top/TopNotes.pdf

        Basic topology.

        Kilahill is correct provided that we are to assume that the lines in the image all lie in the same plane (which I feel is the intent) and are not a projection of a third dimension, in which case 40 is a correct answer.

    • Jaymee says:

      A square can have something inside of it, specifically a line in this matter, and still be a square. The definition doesn’t say anything about the inside of a square. If you would count the squares as you would in the diagram, then you will get 40, not 16.

    • Ted says:

      Kilahill

      It’s because your definition of a “real” square is flawed. There’s nothing wrong with the lines going through. A square is defined only by the lines that create it. So back to 40.

  13. Kilahill says:

    It is 16. Period. End of discussion. If you disagree, you’re an idiot.

    This is meant to make you think there HAS to be a high number of squares. You’re all over thinking it! That’s the whole point to this. It is 16. I am literally the ONLY one EVER to guess 16. Am I a genius? I think so, lol.

    • Cindy Z. says:

      Again, cocky, arrogant, offensive attitude, thinking that everyone has to agree with you, or they’re an idiot. You sound like my mother-in-law.

    • Cindy Z. says:

      http://www.teachingideas.co.uk/maths/chess.htm http://www.basic-mathematics.com/checkerboard-puzzle.html These math websites, as well as others I’ve seen, show that in counting the squares on a checkerboard, you count all squares, yes, even those with lines through them, which would equal 204 squares total.

    • Jon says:

      The definition of a square is ‘A shape having four equal length sides’. It says nothing about what is inside that shape, it only defines the sides. Therefore a square divided by any number of lines is still a square.

      The answer is 40 and YOU are and Idiot.

      • Kilahill says:

        Oh people, oh people. So angry over such a fun brain teazer! lol

        Sure, they OUTSIDE shape is still a square, but, the INSIDE is broken up, making it no longer a square. It’s a square with many shapes on the INSIDE. Rendering it NOT A SQUARE ANYMORE.

        I was serious about my answer of 16, but NOT serious about my attitude. I am having fun with you people. Relax a little.

        • Mike says:

          Did you edit your answer? I could have sworn you said 12 (thus my comment).

        • Steve says:

          Geez people kilahill was being sarcastic, not once was he demeaning! Oh and to the person that keeps calling him ‘and idiot’ it’s ‘an idiot’ I’ll refrain from calling you a dope.

      • Alarm says:

        I agree with Jon..and anyone else who knows the definition of a square being a shape having four equal length sides. PERIOD. The answer is 40.

      • matt says:

        If a square “has” a side, may the side belong to another? The question of side ownership also relates to separability. If you print out the diagram on paper, you cannot cut out 40 squares. So, many of the squares are imaginary. Is the task to count real squares or imaginary ones?

        • Ted says:

          Hi Matt. I’m not sure I quite understand the question. A square, in geometry is defined as having all sides equal, and its interior angles all right angles. So it’s about the lines. Yes, a line can be used for one square and again for another. And it’s not about cutting anything out. It’s about finding 2 sets of 2 parallel lines that cross each other making 90 degree angles and in such a way that the four bordering segments are equal.

          There are no imaginary squares here unless we’re drinking lots and tipping our laptop and holding our head at an odd angle and squinting our eyes. (this last part wasn’t directed at you).

    • Jaymee says:

      I’m not meaning to offend you in any way.

      But how do you not count the 4×4 and 2×2 squares that the diagram shows?

      And you shouldn’t be calling people idiots.

    • se says:

      I got 16 as well. Good job.

    • Killa B says:

      It could never be 16. It would have to be 17. You have to count the entire grid. It has 4 equal sides. But the correct answer is really 40.
      beejay923@gmail.com

    • Ted says:

      No, you’re still wrong because your definition of a square is just….oh my god, re-take high school geometry. Please.

      You’d think a site that starts out with a gif that counts the squares for idiots completely incapable of counting for themselves would end this. It’s astounding, really.

  14. Joedygirl says:

    I see where they are getting more than 40 from…IF you copy and paste the image into something like microsoft word and blow it up it has little squares at the corners of the squares in images 17, 18 and 31. In fact the one I blew up has even more little squares in that. Like Tracy said though you have to tip your screen back and such. But looking at ONLY the black lines and not the little gray ones that pop up at the corners of the squares there are 40 and that is what I counted before finding this site! Hope this helps some of you!!! Have a great night!

  15. Tommy says:

    @ Kilahill

    If you are getting picky then there are only 8 squares. a square needs 4 lines, if you draw square 1 then to draw square 5 you are only drawing 3 lines so is that really a square?

    square 1 and 9 can be squares or 5 and 13 and 4 and 12 or 8 and 16 then 4 of the small ones.

    If squares are allowed to be drawn using sides that are already in place then this drawing can be made by drawing 29 squares that at the time of drawing do not have any other lines inside them. e.g. the 4×4 square then square 27 then 1

    I just did a quick count of these 29 so there may be a way of drawing this with more than 29 squares that do not have any internal lines at the time of drawing

  16. Holly says:

    I got 40. I found this on facebook and decided to try it out. It took me going on to paint and pasting the puzzle square 11 times to color in all the different squares to get my number. I felt kind of stupid when I scrolled up through the comments and saw that you had pasted the answer and how to figure it out. I was fun trying though so I wasn’t to bummed. Actually I was kind of suprised how many people only got like 24 squares.

  17. Wayne says:

    I guessed 16 because I was looking for only actual visible squares and not overlaying and reusing what I had already counted. It is your perception that causes different answers to come up. So depending on the method you use and your own personal perception we are all right to some degree.

  18. Wayne says:

    So I’d say 40 and 16 are both correct. Take a crayon, color the squares different colors as you count them and don’t reuse the colored squares and you can only come up with one answer….16. That is my reasoning. The 40 is only possible if you reuse what you have already counted.

    • Michael says:

      No I disagree. You are not reusing them, they are different sizes. You are not reusing the same square at any point.

  19. Wayne says:

    It is simply a parlor trick with more than one answer. I bet you could win money at a bar with this easily. Because no matter how they did it you could still tell them they are wrong. LOL!

    • Ted says:

      No. You’re wrong. There are 40 squares.

      Once again kids, squares are defined by the lines that make them, not the color in the middle, or the space in the middle. Get any geometry book or look it up online. A definition of a square is about the lines.

      This isn’t a game of perception. It’s about counting 40 damn squares.

  20. David says:

    I got 40 right away then counted rectangles. 74 correct?

  21. Chris Brogden says:

    I count 41 squares. Your animation misses the square encompassing your #6, 7, 10, and 11.

    Crhis

  22. Chris Brogden says:

    Never mind; I’m an idiot. There are 40 squares after all.

  23. sphexes says:

    OK…So you have the squares figured out….how many RECTANGLES are in the same group? No cheating!

  24. sphexes says:

    104 rectangles so far

  25. The Count says:

    There are (5 choose 2)^2 + 2*(3 choose 2)^2 = 10^2 + 2*3^2 = 118 rectangles. The first term comes from choosing which of the big vertical lines are the sides of the rectangle, and which of the big horizontal lines are the top and bottom. The other term comes from asking the same question in the smaller 2×2 grids that are offset from the big lines.

    This is the same approach I used to get 40 for the original problem, except the 1^2 + 2^2 + 3^2 + … + n^2 = n(n+1)(2n+1)/6 squares in an n-by-n grid are replaced by (n+1 choose 2)^2 rectangles.

  26. ramik says:

    Depends on what you consider a square. A square to me is shape with 4 points, and I counted 16 because of it.

    Based on my definition, I am correct.

    • Ted says:

      Ramik. Was that sarcasm? If so, it was funny.

      On the small chance you were serious, there is no “what you consider a square.” A square has a very specific definition.

      But I’m going with that your post was pointed and funny.

  27. steph says:

    this is really funny. i counted 3 times and got 36 then i saw 36-39 the forth time i counted. although i have never participated in an online discussion, i find them really amusing because this really is a simple geometric puzzle and people are getting all in a rut about something so small. really, there are 40 squares, this isnt a debate, but so many people seem to be getting in a huff about it, debate something that can be debated!

    • Agreed. I stopped trying to explain to people and just decided to sit back and watch the shenanigans. I can’t help but laugh at people who have their own definitions of a square. Last I checked there was only one definition, and a pretty solid one at that.

      • Jaymee says:

        I agree. “A square is a shape with 4 sides of all the same length.

        • Greg says:

          Four right angles and all sides are the same length, to be exact. :)

          • baritonium says:

            Show me a shape with 4 equal sides that’s not a square. No?

            It’s superfluous to specify the 90 degree angle requirement, since “4 sides of all the same length” must also make 4 right angles.

          • Greg says:

            The shape YOU’RE thinking of is a Rhombus. A shape can very easily have 4 equal sides without having 4 equal angles. That’s why the definition of a square stands at 4 equal sides and 4 equal angles. http://en.wikipedia.org/wiki/Rhombus

          • Greg says:

            Oh, and to quote from your other comment regarding a simple spelling error:
            “Make sure you know what words to use if you’re trying to sound smart or you will fail.”

            You were close to right at least. A triangle with 3 equal sides automatically has 3 equal angles. A rhombus however does not.

          • baritonium says:

            Dang, you got me there Greg. I think it was too late and I had too much gin to drink. Completely forgot about parallelograms.

            And one of my pet peeves is when a person uses a whole bunch of big words to try to sound smart, but then gets a simple word wrong. It just bugs me. Kind of like when people think they know how maths work. :)

          • Greg says:

            People always forget about parallelograms.
            … and the Spanish Inquisition.

  28. Zach says:

    I have consistently found 40, but I am curious as to how anyone is finding 44. I don’t see how that works and would like to know their logic.

  29. EveSerene says:

    Hello, When counting white squares, yes, there are 40. However, think ‘outside the box’ and count both white solid squares AND black lined squares. There are two sets here, taking the total to 80.

    • Ted says:

      There are no white “solid” squares. The squares ARE THE LINES NOT THE SPACE IN BETWEEN.

      40 squares.

      If you look at a street and are asked to count buildings, you wouldn’t also count the dead air space between. Why do people keep doing this with squares???

  30. whiskey_joe says:

    Holy God, whomever made this gif has WAY too much time on their hands. Furthermore, I can’t believe this “puzzle” is still going around the internet. I think I remember something like this in 2ND GRADE MATH! There is no excuse for anyone not being able to count squares.

  31. Tilly says:

    I saw thus first on Facebook and for ages I counted 36, but then realised I’d missed the 3×3 squares. A square is a shape with 4 equal sides. A pizza is still I circle when it is cut into pieces. The Pentagon is still a pentagon even if the centre is cut with another pentagon. I think the question should be without moving any lines how many squares can you make. It’s 40, thats a logical way to work it out. No hidden squares, use the lines. How many squares can you seperate from the rest?

  32. Dan says:

    The shapes around the small squares in the interior have 6 sides so they are not squares. You have to ignore what you see and you have to ignore the definition of a square to count them. If you get to play psychological games to arrive at the answer you want, anything goes.

  33. http://www.flickr.com/photos/disneywizard/7648693432/ I agree, I made this animation independently. It results in agreement – there are 40 squares.

  34. Shoshanna says:

    No way are there 40! The video went back over 16 of them to get that number!!! My protest is lodged…though I may be wrong!

  35. Bobby Umar says:

    Hey guys

    There are actually more. The trick is how many you can ‘see’. If you look at the 2 smaller squares, you will notice that around it is a square with a thick border (If you can visualize it). That creates 2 more squares, more than 40. You can also find a few more that way.

    The second catch is that if you look long enough, a visual image of a square will appear at all the intersections of 4 lines. This has been documented with the right google search.

    That brings the total so far to 63.

    I hope someone can find more, but my google research has only gone this far. Enjoy! :)

    • stephane says:

      I counted 63 by myself and wondered If I wad the only one on the net to come with that count thank you for your post^^

  36. Bobby Umar says:

    OOH OOH, someone just gave me a new insight. If you imagine a square that is only white (ignoring the black surrounding border) you can add ANOTHER 16 white squares. Cool!!

    Take care
    Bobby

    • Ted says:

      First, there are 40.

      Second, there are 40.

      You’re playing games with the resolution of the picture–which is a fun exercise–but there are 40.

      Second, there are no white squares. The lines are black. Since squares are defined by LINES, and since there are no white lines (that we can “see,” since that is the exercise), we’re again back to 40.

  37. Emily says:

    THANK YOU! I was getting so frustrated telling people!!

  38. Scott Stamm says:

    Okay, if you wanna be a technical f tard about it! There are 40. BUT If you count the Inside of the border/ the Border / Outside of the boarder, then you’ve got 120. Just saying!

    • Scott Stamm says:

      Using this method, being a wise ass and all, with m-theory on dimensions, you’d have 2640 squares, but using the typical 10 dimensions you’d have 2400 squares….but this is thinking way outside the box!….

  39. tolits says:

    it’s 40. i draw it manually and color-code each square and i found 4×4=1, 3×3=4,2×2=9, 1×1=18, .5x.5=8 total of 40. i still remember my grade school fun games..

  40. Areeb says:

    Their is definitely 27

  41. Bravoe9 says:

    I get 11sets of 4squares +the 1 square that outlines it all which makes it 45 squares no imagination just straight count.

  42. Steve S. says:

    The answer is either 40 (as you demonstrate) or 16, depending on how “square” is defined.

    The conventional definition is something like ” A plane figure with four equal straight sides and four right angles.”

    Only 1, 4, 5, 8, 9, 12, 13, 16, 19, 20, 21, 22, 23, 24, 25 and 26 meet that definition, since the others have lines inside and therefore more than four right angles in the figures.

    But thanks for the great demonstration

    • Ted says:

      Only 1, 4, 5, 8, 9, 12, 13, 16, 19, 20, 21, 22, 23, 24, 25 and 26 meet that definition, since the others have lines inside and therefore more than four right angles in the figures.

      No, this is not correct. The lines inside don’t have anything to do with the the 4 lines and their angles. They don’t negate them creating a square. If you take a piece of aluminum and cut it in such a way that all 4 sides are equal and are connected by 4 right angles and write “Eat at Joe’s” in the middle, it doesn’t suddenly mean that the sign isn’t square because there are scribbles in the middle.

      The lines inside the squares are forming other objects to themselves, but any instance of two sets of parallel lines intersecting at 90 degree angles and whose lines are equal is a square. No matter what else is going on around it.

      • Bob says:

        Your argument is only true if we are to assume that the image is a composition of objects projected onto a single plane for our viewing.

        It does matter if there are lines “inside” the larger “squares”. The larger “squares” are not topologically equivalent to those which are smaller. What you propose would also lead to the conclusion a figure 8 is equivalent to a circle, topologically. This makes no sense if the squares are indeed supposed to lie in the same plane.

        The answer is 16 unless we assume some really strange projection space.

        • Bolter says:

          But Bob, if you had a big circle, and there was a smaller circle inside it, does the outside one cease being a circle. No, it doesn’t. Despite the clear amount of logic, do you cease being an idiot. No, you don’t.

          • Bob says:

            A circle inside of a circle is topologically different from lines intersecting inside a larger square. There is an issue with connectedness…

          • Bob says:

            The question posed was “how many squares”, not “how many projections of a square” onto the image plane.

        • 5talentgirl says:

          @ Bob

          In a flat plane, on a piece of A4 paper, how many square shapes can you draw on the image under discussion, using different coloured pencils and only tracing along an existing line?

          That is the question, plain and simple. And, Bob, as others have shown you, if you do this (colour-coding as per @Tolits post 4×4, 3×3, 2×2 sized squares etc.), you will be able to trace EXACTLY 40 SQUARES.

          Why don’t you try it? It is elementary, key stage 3 Maths, and the answer is not subject to perception or interpretation, only knowledge.

  43. Keegan says:

    Made up my own little graphic to illustrate my finding of 47 squares…

    http://img96.imageshack.us/img96/8660/squaresg.gif

    • Keegan says:

      To clarify (as some people may refute some of my choices in what constitutes a square):

      – I have decided that hollow squares count. Why? Well, if you draw 4 lines connected at four corners, that is a square (regardless of whether it’s ‘filled in’ or not). Who’s to say how thick these ‘lines’ can be?

      – You kinda need to think ‘outside the box’ – pun intended – in order to count over 40. 40 seems to be a fairly obvious number of conventional squares to discover in the image.

    • Renee says:

      You’re kidding right? Putting a hole in the middle of a square you’ve already counted doesn’t make it another square. The point of the exercise is to count how many squares can be drawn with the lines provided. It has nothing to do with filling them or not filling them. What you’ve done with your image is link up rectangles.

      “Who’s to say how thick these ‘lines’ can be?” That original image lays it out pretty clearly. The black lines are the rules that have been presented for this puzzle. You’re just making your own up. That’s like saying the wood grain of a basketball court should act as some sort of boundary. The lines painted on the court are pretty clearly the lines the refs want you to pay attention to.

    • starknerd says:

      Yeeaaahhh, ok….I get where you’re going. Make the “lines” thicker and you can grasp seven more…sorta…but naw. I’m not buyin’ it. But, thanks for participating!

  44. DavesChillaxin says:

    I realistically stand by 16.

    http://postimage.org/image/6dtek0rgv/

    “Everything should be made as simple as possible, but not simpler.”
    ~ Albert Einstein

  45. Peter Bay Jespersen says:

    If you allow horizontal & vertical wrap-around there are more, & if you say allowing Horizontal and vertical wrap-around implies diagonal wrap-around too (ie, mapping onto a sphere) then there’s more again. In all, on top of the 40 already counted, you can add 12 [16-sqs] + 16 [9-sqs] + 4 [4-sqs] or additional 32 squares, making 72 total.
    Of course, allowing spherical mapping thus, actually limits the number of possible plane-squares, by making the following impossible:
    without wrap-around, you can add an infinity of squares, if you allow the 16-sq to also represent a 25-sq, the edges of which don’t completely show; then a 36-sq, 49-sq, etc etc. These could all be counted as part of each IS shown in the diagramme…
    Plus, as someone else on FB said, add one for the WORD ‘square’ in the question. So, 73, plus.. And, a shot in the dark, maybe people familiar with 4-to-n-dimensional topology could add more by mapping the 16/18-sq onto more exotic concepts like klein bottle etc..

  46. Deborah says:

    Did you count the 3×3 squares as well?

  47. Deborah says:

    Did you count the 3×3 squares as well? Which would make the total higher than 40. If not, why?

  48. josh says:

    I see circles….time for zzzzzzzzzzzzz

  49. DICTATOR says:

    YOU VILL SEE 40 SQUARES AND LIKE IT!!!

  50. Carla says:

    Either 16 or 40, depending on how you look at it…but I think that’s the point. I guess that technically there are a fair few irregular hexagons. Ooh what fun!!

  51. Anthony I MacIsaac says:

    When I first saw this picture on Facebook, I counted 40 squares. I don’t need any animation to tell me there are 40 four-sided figures in this picture!!

  52. kelly says:

    there are 44. you missed 4 in your animation.

  53. Jack says:

    If you have 4 equal length lines making a box with four 90 degree angles you have 1 square. You could say you have 1-squared squares.
    With a 2X2 grid you would have 2-squared plus 1-squared squares which equals 5 squares, some with lines in them.
    (From here on out I will write that as 2² + 1² = 5 squares.)
    With a 3X3 grid you would have 3² + 2² + 1² = 14 squares.
    With a 4X4 grid (like here) you would have 4² + 3² + 2² + 1² = 30 squares.
    With a 5X5 grid you would have 5² + 4² + 3² + 2² +1² = 55 squares.

    What we have here is a 4X4 (that’s 30 squares) and two 2X2 squares (that’s 5 each, so 10 squares) which means you have 30+5+5=40 total squares.

    And now you can figure them out for other combinations.

  54. Jack says:

    I like Peter BJ’s suggestion. Back when I was young we played checkers. We called it 3-D checkers, but actually it was more esoteric than that. The two sides of the board were the same line. So for example, you could move diagonally forward to the right when you were already on the right side of the board — IF the correct square on the left side of the board was empty!
    The two ends of the board were another same line. So for example you arrived at the next to the last row and jumped over the other’s piece he hadn’t moved yet, you didn’t land on the king row, you jumped over it (back into your own king row). We eventually decided that the rules said you had to land on the king row to become a king, so jumping over like that you didn’t become a king.
    It’s two cylinders, going two directions at once, so you can’t create a board in real (3D) space. But I finally figured out that if I in my imagination copied the playing board as a 3X3 grid of checkerboards, I could jump from the center board onto one of the imaginary boards to see where my position was — but on the real (the center) board. That helped.
    We never could get it to work with chess (first player has check mate without moving).
    We wrote it up and sent it in to Scientific American, but never heard from them, so we sent a copy to the Library of Congress for copyright purposes but never got anybody else interested in it, so it didn’t go anywhere.

    • Peter Bay Jespersen says:

      hey Jack, nice to see *someone* isn’t being dogmatic etc. See my new post below too. I was thinking, about my last idea, of connecting in a kind-of 3d spiral .. say square labelled clockwise fashion ABCD, then connect side BC with side DA, but moved so B actually connects one square down from the top of DA, kinda spirally.. But then I had a thought – say your game, you made some kind of ‘Hyper-Transport/Wormhole’ rule that allowed you to (metaphorically) bend/stretch the board so the king-line of one side could connect up with ANYWHERE on the board (that’s ‘topology’ I guess; google it if unfamiliar). Guess you’d have to think a lot about the rules involved..makes me think of those Star Wars (was it?) 3-D Chess games, sorta,.. Or of the game was virtualised on a screen rather than IRL, maybe AI could generate random wormholes (just from one square to one other random square) or major board warp (connecting a whole rank to another rank) – each event random & connection existing only for random short time, say one or two moves??.. though that would prolly require more like chess pieces to take most advantage than drafts.. and you’d prolly have to think over it carefully so the game didn’t get TOO random.. anyway, jus’ an idea. Cheers !

  55. Bernice says:

    If you do not count squares with lines, you can’t even count the original square as there are lines running through it.

  56. Sandra says:

    I get 40 every time but have a hard time getting others to see it. This is FABULOUS!! Thanks for taking the time to create it.

  57. Mark says:

    But you’re all wrong. After all, how many squares CAN’T you see? The question doesn’t ask for a number. You can see them all.
    If you ask “How many squares are there?” …. that requires a number.

  58. Ian says:

    I tell you what. Some of the posts on here are genuinely retarded. Some will pick fault in my comment as its not is US English etc however, the puzzle is great. Squares with lines through are still squares as its the outer border which is counted. You all need to lighten up and say “yeh, this is good. It got me thinking.” ((like a gimp) for most of you)) and that you are all trying to be too clever and it really doesn’t suit any of you. The comments saying they appreciate the puzzle are much more valuable then some of yours.

    40 is correct. Stop questioning it.

  59. Aaron says:

    I think the answer is infinate as no-one seems to be counting the “squares” counting the squares. On this page I see many squares who have been TAKEN IN by counting squares thus meaning your are all “squares” who are now part of the puzzle .. hehehehe also meaning if the negative space inside a square and the posative space inside are square are squares in thier own right and you have all been taken into one of those spaces by taking part you must also be counted. Thats real math for you lol

  60. Sean says:

    I have to agree with you Ian. I counted 40. Did the math after I realized the number and yes it is 40. What this discussion has turned into is perception. Pretty much the two schools of Athens going on here in geometry and math. Which is absolutely appropriate, given the Greek reference. Aristotle inductive reasoning. Use the sense to establish patterns and create an absolute
    Definition (simply put). Or Plato. There are Shapes and shadows that we, normal humans, are not aware off because our simple senses fail us.

  61. Dan Smith says:

    I see 40 in traditional 2 dimensional math that are described, but also see a total of 57 if you count each intersection that has a full x/y cross (square black pixels at each intersection). If you count partial intersections I count 81, but traditional math dictates 40 as each line is considered to be 0 space, only used as a reference. I am no math genius, but I see 40 as described.

  62. brianna says:

    There is actually well over 150 there.

  63. brianna says:

    I got to 172 so far. im sure a second look there will show more

  64. Inge says:

    There is an infinite number of squares that are not demarcated by visible black lines. Just kidding. 40 is correct if you go by what is surely the spirit of the puzzle. (OK, maybe 80 if you count negative space, or 120 if you count both the outside and inside of the lines as squares in their own right. But again, the spirit of the puzzle probably doesn’t include those somewhat esoteric squares). 40 is the commonsense answer.

  65. mark says:

    I would like you to know that the square middle left and middle right are not in fact squares as they have 6 edges and not four so the 40 squares is wrong

  66. jonathan manwarren says:

    hey Christopher Kirkman, I found this picture on facebook and I have a question about it. the picture itself is square so could you consider the whole of the picture outside the lines as being square number 41?

    • I don’t believe that to be the intention of the puzzle. You can read back through dozens of comments here and on FB and see that people have as many explanations and answers as there are comments. However, remembering back to when I first saw this in 6th grade geometry class, I believe solving it correctly meant interpreting the question as “how many squares (4 sides of equal length) can you TRACE using the lines provided?

      There are many others like this using other shapes, and although the immediate answer isn’t usually correct, the overly complicated ones people seem to fabricate so only they can appear correct are, at best, stretching things.

      The truth is, the stated question is “how many squares do you see” so in essence you could scroll down for 3 pages worth of comments and count each of the squares surrounding the icons of every commenter, every checkbox, every thumbnail image and every social feed icon to get hundreds, but that’s just a little silly, don’t you think?

  67. Stan K says:

    Aside from the clever philosophical debates and attempts at humor – I really fear for the state of mathematics in the world. There are 40 squares. Even with this flawless animation (thank you!) there is still attempted debate. Less than half of more than 200,000 posts to facebook appear to have answered it correctly. There is only one mathematical definition of a square. A planar figure 4 equal length straight sides connected and 4 right angles. Arguments concerning what is inside the square are just absurd. If you have a square driveway and draw a line bisecting it to make two rectangles – the driveway is still a square. One post defines a square as any 4 points! Still I’m encouraged that this inspires such passion from so many people. – Maybe math can make a comeback!
    Another fun test – how many squares are on a Chess Board?

    • You aren’t alone. It astounds me not only how much traffic I’ve gotten from this little one-off post, but how many people are refuting the simple, and what I feel is pretty clear, animation.

      And yes, I do find it a little disconcerting that basic mathematics principals seem to be lost on so many people. Much in the same way correct spelling is a thing of the past, especially on Facebook.

      But to answer your last question, a commenter above, “Jack”, typed out the formula for figuring out how many squares can be made from any normal grid. Our up there isn’t normal, but a chess board would be, so an 8×8 board you add:

      8² + 7² + 6² + 5² + 4² + 3² + 2² + 1²

      and get [drumroll]….. 204.

      • william montgomery says:

        Humans are funny animals, I witnessed a whole week of debate on talk radio about why a corn cob looks as it does after having been eaten ( the shape before and after viewed from the end ). These are the things that make one go hmmmmmm.

  68. LostFaith says:

    If you come on here arguing for anything other than 40 squares, it is obvious to every sane mind here that you are either-

    1. Completely ignorant
    2. A pretentious a** hole
    3. Trying desperately to get people’s attention so they will reply to your comment

    Please attempt to do the puzzle in the nature it was intended. It is obvious how this was meant to be counted, do it as such. We get it, you think you’re smart; you don’t have to prove it to strangers on some random website.

  69. Terri says:

    ok…none… they are all rectangles, it is an optical illusion and if you don’t believe me, measure the sides!!!! really????? a million people and no one has measured the sides!!!!

    • LostFaith says:

      I hope that is a joke.

      • Terri says:

        if you measure all the sides, they are all rectangles I see two squares of 4 blocks high and 3 blocks across that are actually squares…

        • LostFaith says:

          When I open the image file on my computer it says the image is 2.67″ by 2.67″, meaning the length of the overall image is the same as the width of the overall image. Since all the lines are straight and parallel to the line across from it, perpendicular to the lines adjacent to it, that is one big square by definition. Next, the vertical and horizontal lines are all spaced evenly apart and placed perpendicular or to the outer square’s lines, separating the big square into 16 smaller squares (and yes, I did measure the lengths of the distances between all the crossing lines, they were all nearly exactly the same, likely off by some absurdly small inconsequential distance). The other 2 central squares (each of which can be separated into 4 additional squares) have equal lengths and widths, as well as parallel opposite sides and 90 degree angles at the corners. I honestly have know idea what you are doing to measure this, but you are clearly wrong. Terri, if you think you’re the first person in, as you say, millions of people to find out that these are not squares, you are out of your mind.

          Unless you are measuring at some ridiculously small and insignificant scale just to be cute and differentiate yourself from the others, I recommend you stop measuring things with whatever tool you are using (likely the width of your thumb or placing gaps between your fingers and moving them from line to line). Be realistic here.

          • Ted says:

            Thank you @LostFaith.

            Just when I thought this exercise couldn’t be any more stupid, Terri proved you can take stupid to a whole new level. Well done.

        • LostFaith says:

          In addition, to extinguish any lingering doubts (although I’m sure in your fantasy world you have to be right and I can’t convince you), I clearing out the white background, leaving just the black lines, I then duplicated the image, having the grid (with a transparent background) superimposed on the original image. I then rotated the superimposed image 90 degrees (typing in a 90 degree rotation, not by hand) and the lines of top rotated image was indistinguishable from the original image below (except the two central squares were now left and right, instead of top and bottom). If you were right, the longer lines would have stretched out beyond their underlying shorter counterparts. That did not happen, in fact, the lines didn’t even look thicker, meaning this image is really well designed and the squares are perfectly square. I understand this logic is hard to follow with a visualization, but try it your self and see. I think even simple paint programs can rotate an image and let you superimpose them. Again, definitively, you are wrong; completely and utterly wrong. I would advice you reconsider your stance, I’m sure others will take the opportunity to let you know you are wrong as well.

    • Bolter says:

      The shame about social media is that every idiot now has a voice, and people that should never be heard now are on a global scale. Thank you for proving my point.

    • Ted says:

      Terri.
      You’re an idiot. That is all.

  70. Russell says:

    What I don’t understand is how the middle 2 columns of squares can be counted when they are actually not squares… Because parts of them have been chopped out by the middle 2 boxes…

  71. Katy says:

    I do not understand everyone arguing over this.

    Define square.

    Those are all rectangles.

    Zero squares.

    • Ted says:

      Katy. Yes, they are rectangles But they are a special kind of rectangle called squares. Please continue to 6th grade before ever speaking or typing again.

  72. Peter Bay Jespersen says:

    @Christopher Kirkman – you haven’t commented on wrap-around. It seems a perfectly obvious thing to me since every time one types more than one line of text wrapping is used. If you (or others in here) say that wrapping implies 3D, hence disallowed, that is incorrect: when mapping a 2D (plane) figure onto a 3D figure, the ‘surface’ is still plane in itself, even though it may appear to be 3D from the 3D perspective. For example, the surface area of our planet, Earth, is measured in square miles/kilometres (plane units), even though we know the earth is, approximately, a sphere, a 3D object. Or to put it the other way, if I draw a square ABCD (clockwise) on a piece of paper: what is it’s volume? = (B-A) x (D-C) sq units. If I then curl the paper into a tube with the side AD on the side BC, and ask the same question, the answer remains the same, even if the tube of paper looks like a 3D shape. Of course you can’t physically wrap both directions, paper isn’t flexible enough, so you use theoretical (or virtual) paper, Photoshop it, so to speak, and/but the answer to the question, what is the area of the square ABCD?, is the same, in *square* (ie, plane) units.
    Of course, for purposes of a junior math type question, no argument with 40. But if it were a figure in say, a physics or astronomy or etc etc* paper then the expectations might be different, and so might the results, and a simple answer of ’40’ might not be sufficient.??
    just for interest: [SURFACE AREA : Volume] (ratio) is a useful thing to contemplate in some situations – (eg: http://en.wikipedia.org/wiki/Surface-area-to-volume_ratio)
    @Stan K – care to comment on this (above) ?
    re squares on a chessboard: I assume you mean chessboard as example of 8×8 square plane figure – in which case, drawing them all out for myself, I get:
    [1x1]64 + [2x2]40 + [3x3]36 + [4x4]21 + [5x5]16 + [6x6]9 + [7x7]4 + [8x8]1 = 191.
    but if wrap-around is allowed (horizontal, vertical, & diagonal),:
    [1x1]64 + [2x2]50 + [3x3]64 + [4x4]52 + [5x5]56 + [6x6]49 + [7x7]28 + [8x8]29 = 392, or 201 extra over the 191.
    I spent the last half-afternoon drawing all the figures – I looked, removed duplicates (hope I got them all), so this is *not* just off the top of my head.
    Next part – if I did a fancy wrap, say a spiral one where top right corner wrap corner connects to one square down from top left corner..or that PLUS bottom right connects to one square along from top left.. and then varied the ‘pitch’ again after that for possibly more results… checking carefully not to include what’s already been counted… but I’ve spent long enough on this already, too long even, so if you want to work on this, good luck to you. LOL. Cheers !

  73. brenda shannon says:

    i see it now! it is 40. sorry for saying you were wrong!

  74. B.A. says:

    I now see 40 but first saw 32. I missed the one’s in the center first time.

  75. Stan K says:

    @Peter Bay If you allow wrap around – it does become more interesting. If you take a square ABCD with side length =2m then the area is 2×2=4m^2 (obviously). You can’t compute the Volume of a 2D figure – When you wrap it into a sphere like shape (using virtual figures) you are correct the surface area is still 4. When you asked about the “Volume” I think you meant surface area. Units of length are one dimensional (like miles), Area is 2 dimensional (Square miles), Volume is 3 dimensional (Cubic Miles). If you could do the mapping of the square piece of paper onto the surface of the cube – the Surface area would be exactly 4. The cube would have a diameter of about 1.13m from S.A. = 4*pi*r^2 (integrating the Surface area yields the volume equation) V = 4/3 *pi * r^3 = 0.7524m^3 Giving a surface area to volume of 4/0.7524 = 3/r = ~5.317 for a Sphere with radius 0.564 (S.A. =4)

    Regarding the basic chess board calc you had two small errors. There are 49 2×2 squares and 25 4×4 squares – for a total of 204. For an N sided board – the number of squares without wrap around is the sum of n^2 from n = 1 to N. or 1 +4 +9+16+ 25+ 36 + 49 +64 = 204 (for a chessboard) note each term is a perfect “square” (to end on a pun).

    I’ll think about the wrapping aspect of a chessboard and write back on the number of squares in this case when I have more time.

  76. Stan K says:

    Oops – I said “cube” a few times in my last post- I meant “Sphere”

  77. refinnej says:

    theres actually little tiny lighter colored squares all over in the black lines meant to be a focus trick. I count 80.

  78. william montgomery says:

    Looking straight forward, using k.i.s.s. system, “I see” 16. No lines crossing to make squares, 8 large, 8 small, 4 shapes are not squares. The question asked was “how many squares do you see?” that question leaves it up for debate. Had the the question been worded different, and rules applied (cannot make squares crossing other lines, etc.), certainly 16 would be correct. Remove a square from the grid each time you count it and squares run out at 16. There’s an even number of squares so all the odd numbers are wrong, some are losing count and repeating. If you ask what’s the highest possible number of squares can be found, certainly 40 is the best answer as the animation points out. There are some faint lines that appear but I believe those are ghost images from a poor scan. Glass half full/empty never seems to be solved, this one may never be solved. Applying rules (math?) makes it simpler but then what’s the fun in that? ;)

  79. Terri says:

    lost faith…did it make you feel better to be ugly about it??? I MAY NOT BE AS CEREBRAL AS MOST ON THIS COMMENT STREAM, but I was not being mean…on my computer, with an external measuring device, the only Squares are 4 high and 3 wide, the entire pic is a rectangle… if on your computer or if you can print it and measure, you will find 40 squares. but will stick with 2 as my image is a rectangle…

    • LostFaith says:

      I apologize for getting admittedly snappy and “ugly” in my comments. Regrettable decision. As to you seeing rectangles, I don’t know what source your image is from, but I would guess the image is distorted, or your computer/printer distorts it. Opening the file on my computer, the file stays under the dimensions set by the source I found the picture through. According to my image there are 40 squares. Again, sorry for being hateful; no real need for that kind of stuff.

    • Ted says:

      Terri, you’re not as cerebral as a rock. You’re an idiot.

  80. christy Hart says:

    I’m with you Terri…It asks for squares…they are all rectangles! And initially I thought the only squares were the two shapes in the middle, but they are just off a bit too which= rectangles. It’s an optical illusion folks…

  81. Chris says:

    Based on an image size of 320 pixels x 320 pixels, the correct answer is 10,973,920. I don’t know why every guess is 5 orders of magnitude off… :/

  82. jerry madrigal says:

    144 squares, 40 square boxes as defined as boxes of 4 sides of equal lengths, 104 squares as defined by 104 90 degree angles and combined 144 “squares”…

  83. Baffled says:

    My mind is killing me!!!! lol

    My argument is based on first the definition of a square?:

    A plane figure with four equal straight sides and four right angles. Two important points in the definition: 4 equal sides and 4 right angles.

    Using this definition this eliminates many squares….from my calculation 19 but there could be other squares that fit this defintion out there…they seem to appear out of nowhere.

  84. Monica says:

    I see 42 squares. The Square that has a middle square, can be looked at as an empty middle, with a thick edge forming an additional square.

  85. Raquel says:

    I see 40. This picture finally finished my quest for an answer lol how is it that someone made this game and never supplied an answer? I would also like to know why everyone still keeps arguing there is more than 40 and saying how could you post this? How could you post a comment and not thoroughly make sure your argument is a valid one?! lol good lawddd.

  86. plooger says:

    Ok, just wanted to write to thank you for taking the time to publish this animation, and to comment on how eerily similar our brains functioned in regards to the animation — with yours demonstrating a tad more diligence, having included the counter which I opted to leave out (due to my GIF animator not having an easy way to cleanly add one).

    http://home.comcast.net/~krkweb/misc/squares.gif

  87. Martina says:

    What a fun game for the mind — and the kids :) I spent far too much time geometrically working through my formula only to discover what I thought were two additional squares; thus, arriving at 42. I, however, did not use highlighted animation. Entirely possible my mind double counted. Any more puzzles available???

  88. Andy says:

    When you draw a square and then draw lines inside that square attached to the lines of the original square, you instantly make the original square a different shape than a square. This 40 square assumption is incorrect unless you qualify that every background square should be counted. Even then that’s cheating!

  89. julie nanhoo says:

    I couldnt resist counting the squares.
    i found 40 squares…..

    I missed out the 3 x 3 squares

  90. Brent says:

    In my opinion, there are 16 squares. Anything beyond that is based on the assumptions that the image is layered and/or transparent. Since that’s impossible to know unless it is stated as fact along with the image, the only certain answer is 16.

    • Renee says:

      Ugh, yer kidding right? You have to be. Let’s make it simple. Print out the image. Take a crayon to the paper. Now draw a horizontal line from any point on that grid to any other point in the grid on that line. then draw a vertical line to another point. then horizontal, then vertical again back to the original point. If your lines are the same length:THAT’S A SQUARE. It doesn’t matter how many other points you passed over to get from point A to point B. There’s no layering, there’s no transparency.

      It’s a simple shapes puzzle for a 5th grader, why is this so difficult for everyone?

  91. amp says:

    is wrong are 41 there is also a central turn of the small

  92. amp says:

    OPS sorry, is counted are 40

  93. HughAW says:

    I counted 41.
    All of the squares you Identifed +1 2X2 square in the center!

  94. HughAW says:

    Correction 40; Re-watched the video Center 2X2 counted

  95. geison says:

    ridiculous, are only 17

    português

    inglês

    espanhol

    the boxes can not overlap

  96. Christine says:

    Thank you. I had gotten 40, also, but I was seeing people saying things like “58” on another posting, and I couldn’t for the life of me figure out what I was missing.

  97. figgy says:

    if you want to know how many squares are actually in the image you must not think in 3d. There are only 17 actual squares. However, if you count the ones that your mind can perceive there are 40

  98. Nicole says:

    I think each of you will find you are in fact all wrong, the original puzzle is infact an optical illusion and when drawn properly each ‘square’ is infact a rectangle and when you turn the paper on its side only then can you see that the measurements do not match those of the descripiton of a square so the answer is 0 … hope I cleared that up a bit for people

    • Bolter says:

      Yeah, good one Nicole. Thanks for proving the fact that all people aren’t equal, some are stupid and shouldn’t be allowed to breed.

  99. Larz says:

    Your counting the outer sq As 1 but in fact if you count the twelve sq on the inside it would
    Be 41…?

  100. Steve says:

    It’s amazing how little common sense most people have if they can’t figure out the simplest things. I guess common sense isn’t that common.

  101. dave says:

    you missed a lot of the squares, please re-evaluate

  102. Anne says:

    Why are smart people dumbed down to name calling? I guess an increase in intelligence comes with a decrease in immaturity? Just state your case and zip it.

  103. Gary says:

    it amazes me how people try to “outsmart” other people with things like this. THERE IS NO SPOON PEOPLE…

  104. Sarah Campbell says:

    There are 40 if you count the ones with black edges. There are also another 16 if you count the ones with WHITE edges (i.e. inside the black squares). I make it 56 total, but maybe I am just being picky :)

  105. Wayne says:

    I printed out the graphic and got my scissors out. After cutting along each line I had 8 large pieces of paper and 8 smaller pieces of paper in the shape of what is traditionally known as a square. I had 8 large pieces of paper with 6 sides not a square. So in the “real” world there are only 16 squares whereas in the “virtual” world there could be 40 more or less depending on how intelligent you are, level of education you have, eye color, hair color or any number of traits you possess.

  106. Joseph says:

    What about the white border outside of the entire square…. Does that not count??

  107. Joseph says:

    And why are some of you talking about “there are only 16 true squares” etc.. Imagine them as stacked on top of one another..

  108. carolyn says:

    THANKS for the clever easy to understand graphic! It took me forever to arrive at 40, then wanted to know if it was right. The search led to you!! Vindication!! (and no more searching for more)

  109. stani says:

    You can cut out only 16 squares. How many you can count, is a nother thing, the test is to little described to know if u gna count it as a hexagram or none “destroyed” squares. 92 % here says 40, i say 40, but i understand ppl saying 16.. maybe theres just a dude fu**ing with us, he did a great success

  110. Manc says:

    Do you guys know and make a difference between square and rectangle my answer is 28

    • If you’re referring to me, the author, then yes, I know the difference. A rectangle is a four sided plane with four right angles. All squares are rectangles, but not all rectangles are squares. As laid out in the animation above, 40 squares (a plane with four EQUAL sides and four right angles) can be created using the lines provided.

  111. burnt says:

    I had the same issue and created my own version of your counter here:
    http://youtu.be/5bMdrdcV4yM

  112. christy says:

    this is about the hidden square there are 40 square the solution is ( 8×1 ) + ( 4×4 +2 ) + (3 x 3) + (2 x 2) + (1 x 1) = 8 + 18 + 9 + 4 + 1 = 40 squares

  113. Register says:

    The formula n²+(n-1)²+(n-2)²… will determine the number of squares in a square arrangement. In your chessboard setup with its 8×8 arrangement the number of squares will be 8²+7²+6²+5²+4²+3²+2²+1²=204

    In the picture we have a 4-square setup which then gives you 4²+3²+2²+1²=30 squares plus two 2-square setups (2²+1²)×2=10. All in all 40 squares in the picture.

  114. Richard Kelly says:

    putting the two squares in the middle splits those eight middle squares into 4 smaller squares each even though they are not outlined.

  115. Kurt says:

    Saw this on FB for the first time today and counted 40 the first time I tried b

  116. Terri says:

    Wouldn’t it be 41? The entire box is also a square.

  117. Mike says:

    terri. that is square # 40. haha people crack me up just accept it :)

  118. Fujikoma says:

    I think the problem with people using the line thickness to get more than 40 squares is that they don’t understand the representative definition of those lines. Using their logic, there would be no true squares because none of those lines is truly straight, none are truly the same length and even the angles would not be exactly 90 degrees. It would also render the ‘they’re really rectangles’ argument as false. This problem is a simple geometry problem, not something that was meant for college math majors (although I’m sure they could have more fun with it), so all the extra ‘dimensions’ being mentioned have no real place either.

  119. Mark Douglas says:

    I usually don’t respond to anything like this, but in this case given the idiousy of the debates and tirades against an absolute (that being 40 squares) I just can’t resist.
    Does anyone remember this old maxim? “It is better to remain silent and thought a fool, then to speak up and remove all doubt.”. The End

  120. Jessica says:

    I got it right!

  121. Christer says:

    40 is correct, but does anyone know how many rectangles?
    I do.

  122. Dave says:

    Yea I see 40, and 42 but 16 is right. Logically a square is not a stack of cubes making a structure as a whole unless you want to count all the friggin atoms which are not square. If we allow a stack of cubes to be a larger cube then the damn things with the voids count as a squares or cubes.. or whatever you want to call it. Actually, the whole square with a square hole is in fact a square and the piece that left the void is another square. I’m thinking this debate is HOLY CRAP OVERBOARD! Let the smart people be smart :D I’m not. But there are 42 squares and 16 “real” squares.

    • Bolter says:

      You’re right Dave, you summed it up perfectly with the line that you are not smart. At least you are self aware, most people aren’t.

  123. Linda says:

    I love these games. They make me think. Usually I draw them out on graph paper. I got 40 when I drew it myself. Going over every line with different colors. I can’t find anymore. Thank You for the fun. Keep them coming. I enjoy these and number games.

  124. Dave says:

    Well bolter, you needed that. I just feel bad for the people that have the misfortune of being around you.

  125. Roy White says:

    Sorry, but the solution in the video is incorrect. Since there is no information given concerning the figure as to whether any of the angles have a degree measure of 90 or as to whether any of the segments have equal lengths, there is no reason to conclude that this figure contains any squares. The only correct answer to this would be zero.

  126. Tim M says:

    Those who claim a square is not a square based on “lines” inside do not understand that the term relates to the outside shape. Mr Bean’s image could be inside, it’s still a square – with an image inside.

  127. mike says:

    tracy is a fn idiot… tilting your screen back? wtf… are you serious… you;re such an idiot.

  128. Jay Oli says:

    Hey Christopher, nice animation. There still seems to be some debate though – by the dummies of course – so I’d thought I’d throw my 2 cents worth in that might make it a little clearer (even though for some it seems, this would be futile). Can you reconfigure the animation to start with the 8 small squares first, then the 2 squares that enclose those 8 before going to the other 16 singles, 9 doubles, 4 triples and then the full plate? It might help those idiots that, beyond all efforts made towards reasonably practicable assistance… still can’t get it through their thick Neolithic skulls.

    And it looks like some might need the definition of a square also:

    A four sided flat shape characterized by four 90 Degree angles (right angles) and four straight sides of equal length. And before you (those imbecilic, block-headed, dim-witted, simpleton clowns) try to argue the point – It doesn’t matter a fuck if there’s another line running though it or… or a fucking train for that matter! Lets also say it’s safe to assume that they are squares… without the need to debate whether they are a thousandth of a degree off true 90 degree right angles – either way… if only because the puzzle suggests they are squares by asking you how many squares there are in the first place.

    If that doesn’t put the debate to rest then… well then I’m at a loss! A tougher puzzle than this one is determining how this sub-culture of humanity ever manage to walk on two legs, let alone string their mental masturbations together into words, or make an argument… and why are they breeding! Furthermore and for the love of all humanity – who in the hell is allowing this injustice to continue. We’ve come so far and yet the swelling of stupidity is still on the increase! Why?

  129. Marty says:

    There are only 40 squares. Squares are formed by 4 equal sides at right angels whether or not there are other lines running through those squares. Also, you cannot include rectangles because the sides of a rectangle are not equal.

  130. jon says:

    How do I add a photo.. their are other squares that are left out. You know what, just check out my facebook page.. i’ll post the pictures there! (give me a little time, i’ll post them shortly after this post.) https://www.facebook.com/jon.michael.988

  131. Kim says:

    damn i got it right I counted 40!

  132. Realist says:

    One thing is for sure, Jay Oli wins “self-important dbag” of the thread! Bravo, sir, bravo!

  133. richard says:

    I don’t care how many squares there are. All I know is that every time one of my friends comments on this on FB it shows up in my newsfeed again.

  134. Christine says:

    People, you have all debated, counted, called each other names and DEFINED a square, but NOBODY bothered to measure one of the “squares” in the diagram. A million people commented on facebook and everybody came across arrogant and self-important and tried to promote themselves as geniuses, but NOBODY measured the objects in the diagram.

    The answer is ZERO squares. They are ALL rectangles!

    • Hi Christine,

      Any fourth grader can tell you that all squares are rectangles that have four equal straight sides and four right angles. Every square is a rectangle. So yes, in this diagram, they are all rectangles, but that’s because they are all squares.

      Secondly, barring any image artifacting, each of the squares depicted here all have the traits defined above. I should know, because I recreated the original Facebook image, ensuring the pixel height and width for each shape was equal. So, for example, the first 16 highlighted squares are each 80 pixels by 80 pixels. A perfect, by-the-book definition of a square.

      Besides, even if I had made some error in the illustration, the point of the puzzle was never to be a trick question. It’s an exercise for looking beyond the obvious.

  135. Stan says:

    27. Some squarez are no longer squares.

  136. dlambert123 says:

    I am pretty sure this website is where retards come to die. Everyone get out before you lose all the IQ points you have left

  137. Aaron says:

    I believe that the black background that makes up the lines when looked at as a solid object sitting behind the white squares would also count as a square.
    Because I work with illustrator and photshop I would consider these part of the visual construction but if the black space is not considerd an object then 40 it is.

  138. GSM says:

    This comment thread is amazing. You clearly illustrate through the use of animated GIF the CORRECT number of squares, yet people still disagree because:

    1. They missed part of the animation and thus assumed you missed some squares, and felt compelled to call you out on “your” error before doublechecking.

    2. They missed the lesson in Geometry that defines a square to be a regular quadrilateral (ie equal sides, equal angles), and call you out for allowing lines to overlap (by the way people those are line SEGMENTS and they still do not interfere with the squares!).

    3. They fancy themselves to be mathematically erudite and want to call attention to their knowledge of non-Euclidean Geometry including the projective plane, toroids, and other esoteric facets of obscure mathematics, and thus call you out for solving this puzzle using basic elementary school knowledge.

    4. They are highly suspicious of “puzzles” and are looking for the “gotcha” – i.e., include the number of pixels, oh actually they are all technically rectangles, don’t forget the outer part of the lines creates a square “different” from the inner part of the lines, the puzzle really contains an optical illusion. Thus, they call you out for trying to bamboozle them, but no! they won’t be fooled.

    Thank YOU for an exceptionally clear explanation of what should be a relatively simple and classic puzzle.

  139. Jerry says:

    0 or 8 or 16 or 40 depending on your definition of “square”. There’s quite a few rectangles, too, for that matter. If the lines are used to represent the borders which create squares, print the picture out and cut along the lines. You will be left with 16 “perfect” squares: 8 large + 8 small, with 4 leftover “L” shapes. I also see bunny rabbits and cotton candy and dead people.

  140. Diana Bush says:

    You forgot to count the big square whichcontains all the smaller squares!

  141. Bawb says:

    Holy smokes! This is one of the longest clusterfucks of human stupidity I’ve ever seen! Watching people argue over something like this utterly compounds my complete lack of faith in this species. I’m ashamed to be a human right now. I wish I was an ape, because then I would feel smarter reading this insanely long thread if nonsense.

  142. 6thSense says:

    I don’t see any squares at all. I see dead people.

  143. Brian says:

    Nice! 1 Large square divided into 39 smaller squares = 40 squares.

  144. Michael says:

    4squared+3squared+2squared+1squared
    Plus
    2(2squared+1squared)
    =40

  145. Jennifer says:

    I saw this on line and I counted 43! Then someone post your page saying it was 40? So my answer is why didn’t you count the three squares made up of four squares down the center?

  146. Jennifer says:

    Ok me bad!! I see it!!

  147. Anton says:

    Can’t believe people are still debating this..

  148. Alex says:

    Well… Even so sir… I found well above 40 squares… Here’s why:

    4×4=16=1
    4(3×3)=36
    11(2×2)=44

    1+16+36+44= 97 Squares is what I’v found…

    But these types of problems, I guess, seem to be rigged by the original creator, whomever they are, to make it sound like anyone’s opinion is right no matter who looks at it… But this is quite the mindbender.

  149. david says:

    i get 41

  150. Tom says:

    I’m not sure if anyone mentioned but does’nt the written word “squares” count it is in the full picture that would make it 41 to me.

    • david says:

      I agree! ^ ^ ^
      I’ve always counted the written word ‘squares’ and apparantly the people who count that, have a more creative mind and think ‘outside the square’ so to speak. So we win!

  151. Brad says:

    Easy. 40 18 regulate squares, 8 little squares, 9 of 4 regular squares grouped together , 4 of 9 regulate squares grouped together and the whole thing. People say you can’t count groups as a square because of intersecting lines, but actually if you look at the groups your aren’t count the groups as a square you are counting the perimeter of the groups which is a solid line which makes the square and you not counting the same ones over because those grouped square to make bigger haven’t been counted yet.

  152. jijianfeng says:

    40,according to length of sides:
    1/2,8;
    1:16+2=18;
    2:9;
    3:4;
    4:1.
    add up to 40.

  153. Greg Ercolano says:

    Ha, I made the same graphic before finding this one. It’s funny I counted the squares in more or less the same order the OP did, even using red to draw the squares and white to draw the numbers. I used gimp to define the squares, saving each as a separate image, then used a script with mogrify(1) to draw the number into each image, then whirlgif to bring them all together into a single animated gif. Too funny, and apparently a waste of time on my part; result is here:
    http://seriss.com/people/erco/tmp/squares-count.gif

  154. koyo says:

    please can someone tell me how many rectangles are here

  155. Kathrin says:

    You’ve really written a very good quality article here.
    Thank you very much for sharing.

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    It’s pretty worth enough for me. Personally, if all site owners and bloggers made good content as you did, the web will be
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