I’m gonna need a stepladder.

Plenty of places claim they offer large crosswords for the truly devoted solver, but nobody holds a candle to the Ukraine, whose citizens crafted this 100-foot-tall monument to puzzling.

Located in the city of Lviv (Lvov, to Russian speakers), the puzzle is an art installation perfectly designed to keep visitors thoroughly challenged. The clues are scattered on landmarks throughout the city, further encouraging both tourism and brain-boosting.

The puzzle appears incomplete during the day, but at night, special lighting reveals the answers in fluorescent paint.

I can only hope this will inspire other communities to raise the stakes even higher. Crop crosswords that can only be solved with Google Maps! Landscaping sudoku hedges complete with topiary set numbers! Cowboy-style word searches where you actually lasso words on cattle!

Okay, maybe not that last one. But hey! At least I’m trying! The artists of Lviv have set the bar — not to mention the grid — pretty darn high.

You betcha!

A few months ago, I posted a video of various bar bets that are perfect for the puzzle-minded prankster looking to earn a buck or two from an unsuspecting friend.

The same people behind that video have produced another, featuring 10 tricks and brain-teasers with which to baffle and challenge your friends. (Of course, if you keep bamboozling them out of money, they probably won’t want to hang out with you anymore, so use these tricks sparingly.)

Enjoy the following ode to visual trickery!

When pigs fly? You’ve got yourself a deal!

I’m a sucker for a good mechanical puzzle. Figuring out which piece goes where to complete a given item or accomplish a certain task is a staple of many roleplaying games and video games, and coincidentally, that’s one of my favorite aspects of each.

Rube Goldberg machines, perhaps the pinnacle of mechanical puzzle tinkering, never cease to entertain or amaze me, as you can tell by some of the videos Eric and I have posted in this blog over the last few months.

(They also make for excellent set pieces in movies, The Goonies and National Treasure providing two entertaining examples.)

Like many of those who enjoy mechanical puzzles, I can trace my interest back to the board game Mouse Trap, which featured an elaborate multi-stage trap to snare your fellow mice. I don’t recall ever actually playing the game as instructed. Instead, friends and I would freely add pieces, complications, rules, and new wrinkles to the mouse trap itself before setting off the trap with glee.

I have plenty of fond memories solving (and designing) mechanical puzzles of all sorts. Unfortunately, I’ve been having a difficult time sparking the same interest in my nieces and nephews.

Sure, I’ve gotten them all hooked on LEGOs, which is a marvelous start for the tinkerer spirit, but more often than not, the kids would build the sets precisely as instructed, and then just leave them that way. No disassembly, no experimentation to build their own sets and ideas.

None of them have a bucket of random LEGO pieces made up from the fragments of a dozen or so disassembled sets, or know the joy of digging through the bucket laboriously in order to find the one perfect piece to finish a creation of their own design.

Thankfully, my cousin delivered the ideal solution as a gift for Nephew #3’s birthday, discovered by chance at Wal*Mart. The Smart Lab Weird & Wacky Contraption Kit.

This thing is great. The goal is to build a path from the top of a velcro-friendly wall to the bottom for a marble to traverse, traveling down slides and through obstacles of all sorts, in order to reach the landing pad at the bottom, which launches a spring-loaded celebratory pig into the air!

It’s similar to plenty of pipe-and-marble toys from years past, but with a lot more adaptability and flair, and it was an instant hit. Not only did every niece and nephew want a turn designing their own contraption, but they freely made suggestions (helpful and otherwise) for each other’s designs.

The best thing about it? When designs failed or the marble stalled, the kids didn’t get disheartened. It just encouraged them to try again and indulge their cleverness even further. It was a blast simply to watch.

And you better believe the adults got into it too, adding new wrinkles and complications to each contraption, and cheering just as loud when the pig was launched into the air after a successful run.

My cousin was roundly praised as king of the gift-givers that day, and I’ve been recommending the toy far and wide ever since. It’s a great mechanical puzzle and a fun time all at once. And it’s got a flying pig! What more could you want?

I hereby dub thee Sir Cuitous.

Have you ever been jonesing for a puzzly challenge, but your phone’s dead and you don’t have any puzzle books with you and nobody wants to play 20 Questions or Hangman?

What is a desperate, puzzle-hungry person to do in a situation like this?

Well, if you’ve got a chessboard and a knight (or just some graph paper and a pencil, if you want to go bare-bones with it), you’ve got a puzzle waiting to happen.

It’s called a knight’s tour, and the challenge is to place the knight anywhere on the board and, moving the piece as you would in a regular game of chess, you hit every square on the board once.

It’s tougher than you’d think, and if you desire an even greater challenge, you could go for a closed tour, where the knight touches every square just once AND returns to the starting square.

Knight’s tours are common mathematical problems for computer science and programming students to this day, with the endgame being to write an algorithm that will find a knight’s tour for a given grid.

A variation on the knight’s tour is the uncrossed knight’s tour, where the goal is the same but you’ve got the added wrinkle of not being able to cross your knight’s path at any point.

But you don’t have to stick to an 8×8 grid by any means. Any square or rectangular grid can offer a suitable challenge to the aspiring knight’s tour hunter.

There’s nothing quite like a DIY brain teaser to keep your wits sharp. So no matter where you are, remember to keep calm and puzzle on. I’ll catch you next time.