The Floor Is Not to Be Trusted.

We love optical illusions here at PuzzleNation Blog. They’re puzzles for the eye, mind-bending ways that our senses can be tricked by clever manipulators of color, angle, and perspective.

And if you’re looking for visual trickery in flooring, look no further than the tile wizards at Casa Ceramica, a UK flooring manufacturer that decided to kill two birds with one stone. (Well, more like many tiles than one stone, but I digress.)

Supposedly, they had a problem with people running down the hallway to their store, and wanted to dissuade such shenanigans.

So they created an optical illusion to make it look like the floor was more treacherous than it really is. That way, ne’er-do-wells would be forced to slow down for their own “safety.”

And not only are they making their place safer, but they’re showing off their impressive skills while they do so! It’s a win-win.

What do you think, fellow puzzlers? Will it work? Or is it just a clever marketing scheme to draw attention to their topnotch tile skills?

Although I firmly believe it’s just an ingenious way to get the word out about their company, they’re not wrong in thinking that this sort of thing could dissuade rambunctious types. Other designers and stores have employed similar trickery in the past.

I mean, if you were trying to get across this floor, would you risk running?

I think not.


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Visual Video Trickery!

Visual trickery plays an important role in puzzles. It can be the clever rebus that challenges you to find the words each image represents, or a visual brain teaser that forces you to think outside the box.

But nowhere in the realm of puzzles is visual trickery more obvious or more disconcerting than in optical illusions. Some are simple, like the famous old woman/young woman image above (or this hilarious video version). But others are not only more complex, they’re absolutely mind-bending.

Few optical illusions are as effective as those done on video. Drawings and photos are all well and good, but incorporating movement and performance into the illusion are something else entirely.

And stop-motion animator Kevin Parry has some doozies in his Instagram feed.

Check out this one involving a mirror and a wooded area. I’ve watched it a half-dozen times and I haven’t figured it out yet:

He’s also a dab hand at forced perspective illusions, as he shows in this video with a can of soda:

With innovators like Kevin at work, we will never run short of visual wonders, that’s for sure.


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PuzzleNation Looks Back at 2016!

The year is quickly coming to a close, and as I look back on an eventful year in the world of puzzles and games, I’m unbelievably proud of the contributions both PuzzleNation Blog and PuzzleNation made to the puzzle community as a whole.

Over the last year, we explored board games and card games, strategy games and trivia games, dice games and tile games, do-it-yourself puzzlers and pen-and-paper classics. We met designers, constructors, authors, artists who work in LEGOs and dominos, and creative types of all kinds.

We unraveled math puzzles and used statistics to play Hangman and Guess Who smarter. We accepted the challenge of diabolical puzzles, optical illusions, Internet memes, and more.

We delved into puzzle history with posts about Bletchley Park, puzzle graffiti from ancient Greece, Viking board games, and modern mysteries like the Kryptos Sculpture and the Voynich Manuscript. We separated fact from fiction when it comes to puzzles and brain health, avoiding highfalutin promises and sticking to solid science.

We spread the word about numerous worthwhile Kickstarters and Indiegogo campaigns, watching as the puzzle/game renaissance continued to amaze and surprise us with innovative new ways to play and solve. We shared amazing projects and worthy causes like Humble Bundles and puzzle/game donation programs for schools that allowed puzzle lovers to help others.

We celebrated International TableTop Day, built a puzzle fort in honor of International Puzzle Day, attended the American Crossword Puzzle Tournament and the Connecticut Festival of Indie Games, and dove deep into puzzle events like the Indie 500, the UK Sudoku Championship, the 2016 UK Puzzle Championship, and Lollapuzzoola. We even celebrated a puzzly wedding proposal, and we were happy to share so many remarkable puzzly landmark moments with you.

It’s been both a pleasure and a privilege to explore the world of puzzles and games with you, my fellow puzzle lovers and PuzzleNationers. We marked four years of PuzzleNation Blog this year, I’m approaching my 650th blog post, and I’m more excited to write for you now than I was when I started.

And honestly, that’s just the blog. PuzzleNation’s good fortune, hard work, and accomplishments in 2016 went well beyond that.

In April, we launched Penny Dell Crosswords Jumbo 3 for iOS users, and in May, we followed that with Penny Dell Crosswords Jumbo for Android. In November, we launched our new Penny Dell Sudoku app on both Android and iOS.

But the standout showpiece of our puzzle app library remains the Penny Dell Crossword App. Every month, we release puzzle sets like our Dell Collection sets or the themed Deluxe sets for both Android and iOS users, and I’m proud to say that every single puzzle represents our high standards of quality puzzle content for solvers and PuzzleNationers.

We even revamped our ongoing Crossword Clue Challenge to feature a clue from each day’s Free Daily Puzzle in the Crossword app, all to ensure that more puzzle lovers than ever have access to the best mobile crossword app on the market today.

And your response has been fantastic! The blog is closing in on 2000 followers, and with our audience on Facebook, Twitter, Instagram, and other platforms continuing to grow, the enthusiasm of the PuzzleNation readership is both humbling and very encouraging.

2016 was our most ambitious, most exciting, and most creatively fulfilling year to date, and the coming year promises to be even brighter.

Thank you for your support, your interest, and your feedback, PuzzleNationers. Have a marvelous New Year. We’ll see you in 2017!


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It’s Follow-Up Friday: Blind Spot edition!

[No, not THAT Blindspot. Though friend of the blog David Kwong works on that show…]

Welcome to Follow-Up Friday!

Follow-Up Friday is a chance for us to revisit the subjects of previous posts and bring the PuzzleNation audience up to speed on all things puzzly.

And today I’d like to return to the subject of optical illusions.

[Image courtesy of Geekologie.]

We’ve discussed optical illusions many times in the past, covering everything from the Necker Cube to the Dress, but today’s illusion is a little bit different.

The 12-dot optical illusion pictured above, also known as a Hermann grid, has been making the rounds lately, and although many puzzlers have accused people of using a video or an animated gif instead of a simple picture, that’s simply not true.

This is a static picture, but our eyes are not designed to capture 12 dots in view at once, so the others vanish when you focus on one dot in particular.

And the folks at ASAP Science have an explanation for this phenomenon! As it turns out, this illusion and others involve both how your brain processes visual information and how the natural structure of your eye creates a blind spot that some optical illusions exploit.

Check out the full explanation here:

So next time someone shares one of these optical illusions, you’ll be ready to explain how they work and show off your puzzly knowledge.


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It’s Follow-Up Friday: This Illusion’s Got Legs edition!

Welcome to Follow-Up Friday!

By this time, you know the drill. Follow-Up Friday is a chance for us to revisit the subjects of previous posts and bring the PuzzleNation audience up to speed on all things puzzly.

And today, I’d like to return to the subject of viral optical illusions.

Last year, we had The Dress. Then, in March of this year, we had The Jacket. And in May, we asked the question How Many Girls?

Whether we’re spotting iPhones or looking for cats in woodpiles, we can’t seem to get enough of optical illusions.

And there’s a new one making the rounds recently:

[Image courtesy of TheChive.com.]

A woman named Bree tweeted this image of a pair of bare legs that look incredibly shiny. Are they false legs? Are they lotioned or wrapped in Saran wrap? What’s going on here?

I’ll give you a few moments to ponder the image before revealing the secret behind it. Because, as Bree said, “Once you see it, you can’t unsee it.”

Ready? Okay, here we go.

Like most optical illusions, the answer is startlingly simple.

[Image courtesy of TheChive.com.]

The illusion of shininess is actually the result of strategically placed streaks of white paint or toothpaste or something similar.

Pretty impressive once you really look at it, isn’t it?

This image has truly gone viral. As I write this, it’s been retweeted over 16,000 times, and liked over 20,000 times. Bree herself seems baffled by the attention the post has received.

Amazing what you can do with a bit of white paint.


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How Many Girls Do You See?

Optical illusions are a topic we’ve covered numerous times here on the blog, but I’ve noticed a growing trend in the optical-illusion memes that go viral: something to debate.

Think about it. We had The Dress, which the Internet lost its collective mind over. Then we had The Jacket, which upped the ante from two interpretations to four.

Now a friend of the blog has sent me an optical illusion that’s been making the rounds in her group of friends and sparking much debate.

Fellow puzzlers and PuzzleNationers, I give you…How Many Girls?

What’s going on here? Is this a casting call? A family reunion? Are there mirrors involved, or identical twins? Is this a doppelganger convention? Evidence of human cloning?

This image first appeared a few months ago on the Instagram account of Swiss photographer Tiziana Vergari, and although it hasn’t quite reached the fever pitch of The Dress, it’s by far the most viewed image on her account.

So, how many girls do you see?

Last chance before I give you the definitive answer!

Okay then.

According to Vergari, this photo features two sisters, both of whom are looking into mirrors (although one of those mirrors is out of frame).

Honestly, based on the eye placement and angle of the heads for the two I circled, I would’ve said four.

Just goes to show you, you never can tell.

Except for The Dress. That was obviously blue and black. I mean, come on.


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