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Thread: Visual Ilusions

  1. #11
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    Default Re: Visual Ilusions

    Two illustrate my last post - with two shapes of my own. The angels have been exaggerated A LOT.
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  2. #12

    Default Re: Visual Ilusions

    I think that Risto is correct. I looked around for the missing square on the internet and found these solutions.

    http://www.highiqsociety.org/common/...s/puzzle03.htm
    http://www.jimloy.com/puzz/missing.htm
    http://perplexus.info/show.php?pid=38&cid=2167

    And here are some more puzzles for you.
    http://www.puzzles.net/PuzzlePlayground/DirectLinks.htm
    Last edited by a4hire; 30 August 2005 at 03:27 AM.
    Bruce
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    Happiness is free for the taking, Please take some for yourself
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  3. #13
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    Post Re: Visual Ilusions

    A great way to drive friends and family mad...

    See below...

    Without lifting the pen:

    Draw one line that goes trough all walls of the shape

    - You CAN'T go through the same wall twice...
    - You CAN start anywhere you like - inside or outside the shape...

    Easy? You bet!
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  4. #14

    Default Re: Visual Ilusions

    Still working on it, Risto... I can't figure this one out ... The temptation to Google for the answer is overwhelming .
    Since we are on the subject matter of optical illusions, here is a link to a very large pdf file on the topic:
    http://www.sapdesignguild.org/resour..._illusions.pdf
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  5. #15
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    Default Re: Visual Ilusions

    Grafixman,

    Feel free to Google it... If you can find the answer to this challenge on mere 8 billion web pages, I will chug a Dab for you (on a weekend) without taking a breath!

    This is one of those "Zen" challenges... Or as I said in my first post: "A great way to drive friends and family mad..."

    At first glance it looks easy though, doesn't it?
    Last edited by RTK; 31 August 2005 at 04:10 AM.
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  6. #16

    Default Re: Visual Ilusions

    Don't have too much free time right now, but a quick google gave me this link:
    http://www.katev.org/maths/stands/TRACE1.HTM
    Too mathematical for me to think about it, but maybe the answer lies in there somewhere... unless the puzzle involves some underhanded trick, like placing another piece of paper over the drawing... or folding the paper at one corner to use it as a bridge to pass over a previously crossed edge... technically not lifting the pencil from the paper
    Last edited by Grafixman; 31 August 2005 at 04:34 AM.
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  7. #17
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    Default Re: Visual Ilusions

    Okay here is my take on the subject...
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    Last edited by John Rayner; 31 August 2005 at 05:34 AM.
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  8. #18
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    Default Re: Visual Ilusions

    Risto's puzzle is, of course, unsolvable. Here's why:

    1. Draw a short line through each of the 16 "walls".
    2. Count the number of end nodes INSIDE each of the 5 rectangles.
    3. You'll find each of the 3 larger rectangles contain 5 end nodes, the other two have 4 each.
    4. Drawing a continuous line dictates that only pairs of nodes can be connected.
    5. This leaves one free end node in each of the 3 larger rectangles.
    6. A continuous line has only 2 (or 0) free end nodes.

    Clear as mud, eh?
    Lonnie
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  9. #19
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    Default Re: Visual Ilusions

    We have clear as mud winner in Lonnie!

    Before Grafixman comes over to my house to administer a beating... I did say, "A great way to drive friends and family mad..." And "This is one of those "Zen" challenges..."

    This thing is a great way to get a free beer at the pub, as it looks so obvisouly easy to "solve". It's also great for making your annoying brother-in-law have a nervous break-down...

    Nicely done, Lonnie!
    IP

  10. #20
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    Default Re: Visual Ilusions

    My interpretation met all your requirements. 1 line through each wall only once... Pffffffffftttt..........
    IP

 

 

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