Chris Ramsay is not your usual nerd. Between his ZZToplike beard, sleeve tattoos, and quotidian hoodie/baseball cap, you would foolishly think that he is not one of the world’s greatest puzzle solvers. And you would be wrong! This guy has built up a massive YouTube subscriber following of over 6.62 million, that’s million with an M, subscribers solving Level 10 puzzles. Level 10 puzzles are the hardest possible puzzles in the world that would drive most of us bonkers trying to solve. But not Chris Ramsay. In fact, he thrives on these challenges. He has spent countless hours attacking some of the world’s most difficult and craziest puzzles such as: The Impossible Excalibur Puzzle The Absolute Hardest Jigsaw Puzzle The Hardest Lock Puzzle in History And many, many others. Even though the amount of time it may take for him to solve one of these could be half a day, his videos are thankfully edited down between 15 and 25 minutes (give or take)—and they are they are truly fascinating to watch. There’s also lot of sped up POV footage and pithy commentary as he tinkers with these mindnumbing enigmas. Another thing to note about Chris is that he’s a very good cinematic videographer as well. Frequently, he’ll introduce a new puzzle video with a sweeping array of lens flared artistic and themed cinematography along with an epic Game of Thronesstyle music score. It’s his signature film style, coupled with his happygolucky (and extremely patient) persona, along with his inconceivable ability to solve crazy puzzles that make him a YouTube sensation. If you like real physical 3D puzzles that you can touch, rotate, tinker with, and lose your mind over, then you want to watch Chris Ramsay’s YouTube Channel. He’s also got links to where you can purchase these puzzles yourself for hours of intense eyehandbrain coordination entertainment that...
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February 17, 2020[From the website of Dr. Donald Simanek—see further down.] Browsing Martin Gardner’s books I stumbled on this diabolical puzzle. Gardner calls it “an incredible problem”. He traces it back too Samuel I. Jones’ Mathematical Nuts, 1932, p. 86. It is seen on the web in various forms, often ambiguous in wording, along with endless discussions often leading nowhere. I have tried to restate it to remove ambiguity (which isn’t easy). A hole is drilled completely through a sphere, directly through, and centered on, the sphere’s center. The hole in the sphere is a cylinder of length 6 inches. What is the volume of the remainder of the sphere (not including the material drilled out). You’d think there’s not enough information given. But there is. The solution does not require calculus. Gardner gives an insightful solution that requires only two sentences, including just one equation. Visit From mathworld.wolfram.com for more info. The answer is provided by Doctor Donald Simanek, Professor of Physics Emeritus at Lockhaven University. Visit Donald Simanek’s page at Lockhaven.edu for more brainbending physics puzzles! Now that’s an interesting answer! Keep scrolling down… Wanna see a video answer to the brainteaser? This video was created by Tom McNaney Jr., Generalist Applications Engineer, Fellow at PTC (the company that I currently work for). Here is his detailed approach to the brainteaser using PTC’s flagship CAD program Creo Parametric! For the Holey Sphere challenge, Creo Parametric says the volume is 113.097 in^3. Interestingly, the volume remains constant regardless of the sphere Radius. Cool. I have no idea what the mathematical formula is, but probably 4/3*Pi*(something)^3. Who needs advanced math when they have Creo or Mathcad?

January 27, 2020Here’s a quick little brainteaser for young and old alike! Slice the square into 4 identical sections, so that in each section there is 1 caterpillar with its leaf. One caterpillar will not have a leaf, she is taking a diet. This and many other great geometry puzzles can be found on BrainDen.com!

January 20, 2020When writing fun stuff for my company’s global communications site, sometimes I like to throw in a brainteaser every now and again—especially given that a lot of PTC’s employees and customers are engineers. So here are two geometry puzzles to get those old mental juices flowing! 64 = 65 Geometry Paradox Where does the hole in second triangle come from (the partitions are the same)? Write Numbers Write the numbers from 1 to 8 into the squares, so that the squares with consecutive numbers do not touch (neither edges nor corners). These and other amazing geometry puzzles can be found here on BrianDen.com.