British comedian John Finnemore put his time in quarantine to good use, becoming only the third person to solve “Cain’s Jawbone”, a super-tough literary puzzle, in its near 90-year history.

Created in 1934, by Edward Powys Mathers, a pioneer of advanced cryptic crosswords, Cain’s Jawbone is one of the most difficult puzzles ever created. It consists of 100 cards, each containing the page of a murder mystery novel, and challenges you to put the cards in the right order and figure out who kills who in the book. It might not sound so hard, but only two people have been able to solve it in the last 86 years. Well, until recently, when British comedian John Finnemore managed to do it, after working on it, on and off, for about four months.

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Most people struggle to solve a 3×3 Rubik’s cube with their hands, but there are people out there who can do it in under 20 seconds, using only their feet.

You’ve probably heard of people solving Rubik’s cubes blindfolded, using only one hand and even while juggling them; all these different ways of solving the popular puzzle are impressive to watch, but there’s another way of doing it that will probably blow your mind – solving the colorful cube using nothing but your feet. For some reason, I never imagined solving a Rubik’s cube without touching it with your hands was even possible, but it turns out people can do it much faster than the vast majority can using our hands. The current record for the fastest Rubik’s cube solved exclusively with the lower extremity of the legs beneath the ankles is 16.9 seconds.

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Looking for a real challenge to put your puzzle-solving skills to the test? Try Pure Hell, a maddening puzzle made up of extra tiny pieces that are all the same solid color.

Created by the sadistic minds at Beverly Japan, Pure Hell puzzles come in 1,000 and 2,000 piece variants and promise to make you miserable as you try to figure out what piece goes where. Looking at the image of the completed puzzle on the box, you may be tempted to think that all of the puzzle pieces are the same and can be placed anywhere to quickly complete it. Alas, that is just a cruel illusion. The puzzle pieces are actually based on seven different shapes and you are required to figure out all the subtle differences between them. Even when you’re sure you’ve found the right combination, if you feel any tightness or see the riniest misalignment when putting two pieces together, it means they don’t fit, so you’d better try again or risk having to start over later. They are called Pure Hell for a reason…

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Cicada 3301 is often referred to as the internet’s most elaborate and mysterious puzzle, one that often leaves cryptoanalysts and hackers scratching their heads. A sort of cross between a contest, job interview and highly complex puzzle, Cicada 3301 recurs each year, but no one knows who is behind it or what prize awaits the person who solves it.

The first internet puzzle appeared online on January 5, 2012, and two subsequent rounds were released on the same day of the following years. During the first year, Cicada 3301 started with a picture on 4Chan, along with the message: “Hello. We are looking for highly intelligent individuals. To find them, we have devised a test. There is a message hidden in this image. Find it, and it will lead you on the road to finding us. We look forward to meeting the few that will make it all the way through.” The message was simply signed 3301.

The ensuing puzzle provided focused heavily on data security, cryptography and steganography. The clues were scattered in locations all over the world – from the US to France and Poland, within various forms of communication including the internet, telephone, bootable Linux CDs, digital images, and physical paper signs. The clues have also referenced several books, poetry, artwork and music. Clues are always signed by the same cryptic private key to confirm authenticity.

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Devon-based artist Rupert McKelvie has used thousands of discarded puzzle pieces to create a stylish table complete with a lamp.

If you’re wondering what inspired the 27-year-old artist to create pieces of furniture from a weird medium like broken puzzles, it was the frustration of spending hours of patient labor assembling a puzzle, only to see them wasted because of a missing piece. Apparently, charity shops get a lot of puzzles handed in these days, only most of them are missing at least one piece, so he decided to use these incomplete artworks to create something new and complete.

McKelvie has put in hundreds of hours painstakingly assembling around 4,800 puzzle pieces into what looks like a functional and stable table, from popular jigsaw puzzles featuring the Taj Mahal, the Arc de Triomphe and Winnie the Pooh. It must have been a pretty tedious process, but it beats searching everywhere for that one missing puzzle, only to find it under the couch, years later.

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Gerhard Mayer, a talented artist from Nürnberg, Germany, uses thousands of puzzle pieces to create incredibly beautiful collages.

If you’ve ever tried to complete a common jigsaw puzzle you know how hard and time consuming it could be. Now imagine you have to assemble dozens of puzzles into a gigantic one that actually looks like a scenery taken out of a fantasy novel. Sounds impossible, right? Wrong, and Gerhard Mayer’s intricate works prove it can be done, provided you have loads of talent, patience and time on your hands.

Up to 18 meters in size, sometimes covering entire gallery walls, Mayer’s gigantic mosaics are made of thousands of colorful pieces carefully pieced together to create breath-taking images. The artist uses a special technique that includes creating multiple layers of puzzle pieces over already completed sections to create an entire new landscape, and putting together multiple puzzles in an imperceptible way. Gerhard Mayer places all the pieces by hand and uses no other type of coloring other than that of the puzzles.

The artist says he tries to create children’s worlds to heal the world of adults.

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