Farewell, Maki Kaji.

maki kaji 1

When you get right down to it, the puzzle world isn’t all that big. There are a few names that everyone knows, and plenty of names that people should, but generally don’t. And sadly, too many of those names aren’t celebrated until after they’re gone.

Maki Kaji is one of those names you should know.

He passed away recently, and different articles and obituaries called him everything from “puzzle enthusiast” to “Sudoku creator,” but the title he most deserves is the one he put on his business cards: Godfather of Sudoku.

Honestly, he’s one of the three most important people in the history of Sudoku.

Howard Garns is credited with creating Number Place for Dell Pencil Puzzles and Word Games in May 1979 (though a French variant of the puzzle appeared in the newspaper La France in the 1890s). Wayne Gould stumbled upon Sudoku puzzles in a magazine, then designed a generation program and sold it to the Times in London, kickstarting the craze in the UK that spread elsewhere.

maki kaji 2

[Maki Kaji at Brazil’s first national Sudoku competition in São Paulo in 2012.]

But it was Maki Kaji who championed the puzzle all over, using it in his puzzle magazine Nikoli starting in the early 80s, then taking advantage of the UK boom and selling it in dozens of countries. (Gould didn’t have the resources, so many newspapers and publishers came to Maki Kaji for them.)

The name Sudoku came from him. (In American puzzle magazines, it was Number Place or To the Nines.) Originally the puzzle was called Suuji wa dokushin ni kagiru, or “numbers should be single,” before taking the suggestion to shorten it to Sudoku.

Of course, despite his close association with Sudoku, Maki championed puzzles in all forms. He founded Nikoli (also known as Puzzle Communication Nikoli) with two school friends in 1980, four years before adding Sudoku to its roster of puzzles. It was Japan’s first puzzle magazine!

maki kaji 3

One of the goals of Nikoli was to feature what they called “culture independent” puzzles, meaning puzzles that didn’t rely on a specific language or alphabet. (Talk about accessibility!)

“When we create our puzzles, we want people to enjoy them and not feel stressed by them,” he said.

Because of this culture-independent style, Nikoli was famed for its many logic puzzles, because they relied less on words and more on numbers, symbols, and elegant grid positioning. Popular puzzles included familiar ones like Sudoku and Kakuro, as well as less familiar puzzles like Nurikabe and Hashiwokakero.

nikoli puzzles

“I don’t want to just be the godfather of Sudoku,” Maki said. “I’d like to spread the fun of puzzles until I’m known as the person who established the puzzle genre in Japan.”

One of his key tools was a section in Nikoli that invited readers to submit their own ideas for puzzles. It quickly became the most popular part of the magazine. Readers submitted new puzzles, which other readers then refined and expanded on. Nikoli is credited with introducing hundreds of new logic and number puzzles to the world through this puzzle-loving fan-fueled pipeline.

Of course, even the Godfather of Sudoku ventured into crosswords from time to time. In fact, in 2017, it was reported that he published the world’s largest ever crossword, with 59,365 across clues and 59,381 down clues on a printed grid 30m long, kept in a scroll.

Go big or go home, I guess.

maki kaji 4

[Constructor Peter Gordon (and his Sudoku license plate) with Maki.

Maki stepped down as president of Nikoli just last month, and the company released this statement in response to his passing:

Kaji-san came up with the name Sudoku and was loved by puzzle fans from all over the world. We are grateful from the bottom of our hearts for the patronage you have shown throughout his life.

But, naturally, it takes a puzzler to truly honor a puzzler, and I think Thomas Snyder (aka Dr. Sudoku, no slouch himself when it comes to the famed number puzzle) offered the perfect tribute on his Art of Puzzles website:

A wordoku puzzle dedicated to Maki Kaji.

snyder wordoku

The puzzle world is a far richer and more varied place thanks to the creativity, hard work, and passion of Maki Kaji. You probably didn’t know his name before. But hopefully, you’ll remember it now.

Farewell, Maki. Thank you for bringing so many new eyes to the world of puzzles.

[Source links: Kotaku, The Guardian, Wikipedia.]


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Two Puzzly Events: One Soon, One Today!

If you’re looking for puzzly events in the very near future to keep your solving skills sharp, then this is the post for you.

After all, the 41st annual American Crossword Puzzle Tournament is only six weeks away! Yup, on March 23rd to the 25th, puzzlers shall descend on the Stamford Marriott Hotel once again to put their puzzly skills to the test in what is lovingly known as “the Nerd Olympics.”

I’ve attended the event for several years now, and it is always one of the highlights of the puzzle year. The tournament itself takes place over two days, with six puzzles to solve on Saturday, followed by one on Sunday. Then the top three finishers in the A, B, and C brackets solve the championship puzzle on whiteboards in front of the audience.

On Friday and Saturday night, there are puzzle events, demonstrations, and panels by top puzzlers and figures in the puzzle world as well.

It’s a terrific way to not only see how you’d fare in a tournament setting, but also to meet many of your fellow puzzlers, including prominent constructors and previous tournament winners!

(Click here to read our rundown of last year’s event, and click here to visit the Facebook page for attendees and new solvers to share info and learn more about the event!)

But maybe March is too far away for you. What if you’re looking for a puzzly challenge right now?

Well then, The World Puzzle Federation has you covered, because The WPF Puzzle Grand Prix returns today!

With similar rules to the Sudoku Grand Prix (which kicked off last month), the Puzzle Grand Prix consists of multiple rounds over the course of the year, spanning all types of puzzles, including kakuro, deduction puzzles, and more.

And although only members of the WPF are active competitors for those rankings, you can still solve each round’s puzzles and see how you fare against the best in the world!

The Turkish team have prepared the puzzles for Round 1, which will be available from noon on February 9, 2018 (GMT + 1 hour) to 11:59 PM on February 12, 2018 (GMT + 1 hour).

So what do you say, PuzzleNationers? Do you accept the challenge of the Puzzle Grand Prix?

Let us know in the comments below! We’d love to hear from you!


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PuzzleNation Review: Topple Magazine

One of the best things about being a puzzle constructor these days is the level of access solvers have to you and your puzzles. Many constructors create and maintain their own puzzle subscription services, funding them through tips, crowdfunding, subscription fees, or direct-to-solver sales. When puzzly skills and a knack for self-promotion meet, you have the opportunity for real success in building a reputation and an audience.

So when constructor Gregory Gray reached out to me regarding his puzzle e-magazine, Topple, I was all ears. Whether it’s print books, downloadable puzzle packets, or Kickstarter campaigns, I’m always happy to spread the word about puzzle projects that I think the PuzzleNation audience will enjoy.

Gregory sent me the latest edition of Topple (issue VII) to review, so let’s dive right in.

Issue 7 offers a variety of different puzzles to try out. Anagramming and word-forming challenges, trivia, a rebus, some deduction, find-the-path games, and more can be found across these 12 pages of puzzles (plus solution pages, obviously).

I was immediately impressed with all of the different solving styles on display. Shying away from classics like crosswords, word seeks, and fill-ins, Topple opts for puzzles that offer greater opportunities to incorporate art and interesting layouts.

From the anagram rings of ‘Gram Crackers to the alphabet blocks of Blockhead, a great deal of work has clearly gone into not only the puzzles, but the presentation of them, which makes for a very eye-catching solving experience.

The mix of art and puzzles also presents a more welcoming tone for new solvers, who might find a denser arrangement of puzzle grids to be more off-putting or daunting. Each puzzle is given plenty of space to establish itself, so even unfamiliar puzzle types seem more inviting.

But solvers who prefer a bit more challenge will also find something worth their time in this issue of Topple, as a two-page spread of Japanese-style deduction puzzles awaits you in the middle of the book. Whether you’re connecting the dots in Masyu and Hashi or deducing the placement of numbers in Kakuro or black square in Nurikabe, these were easily the most challenging puzzles in the entire magazine, a pleasant change of pace for a more experienced solver.

[Examples of Hashi and Nurikabe puzzles.
Images courtesy of Conceptis Puzzles.]

To be fair, the book isn’t perfect. Some of the blurbs explaining the rules of each puzzle are a bit clunky, which can lead to moments of solver confusion. For instance, it’s not immediately clear in Blockhead if you can anagram the letters in each given word, or if those letters stay in place while you add a letter from the options below.

But those hiccups are few and far between, and for the most part, I found solving issue 7 of Topple to be a very enjoyable solving experience. I breezed through some puzzles, while others put my puzzly skills to the test.

And with Topple, you get quite a bang for your buck. Literally: Each issue of Topple is only $1, and when you consider both the variety of puzzles and the production quality of the book, it’s a steal.

So if you’re looking to try something new without breaking the bank, Topple is an excellent place to start.

The complete Topple collection, along with a free downloadable sampler pack of puzzles, can be found here. You can also subscribe to Topple through Patreon, and be sure to keep up with all things Topple-related on their Facebook page.


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Getting Started with Crosswords

We spend a lot of time talking about crosswords here on PuzzleNation Blog, and rightfully so.

For more than a century now, crosswords have been the standard-bearer for paper-and-pencil puzzles. From your local paper to The New York Times crossword, from online solving to puzzle apps like our very own Penny Dell Crosswords App, crosswords sit comfortably at the apex of the proverbial puzzle mountain, atop worthy also-rans like word searches, cryptograms, and Sudoku.

[Apparently Puzzle Mountain is actually a place. Who knew?]

But in talking about crosswords, it’s easy to forget that not everyone solves them. In fact, plenty of people find them intimidating, given the mix of trivia, wordplay, and tricky cluing that typify many crosswords these days, particularly in outlets like The New York Times, The LA Times, The Guardian, and more.

So today, I thought I’d offer some helpful resources to solvers just getting started with crosswords.

First off, if you need help filling in troublesome letter patterns, Onelook is an excellent resource. Not only can you search for words that fit various patterns, but you can narrow your searches according to cluing, look up definitions and synonyms, and even hunt down phrases and partial phrases.

Along the same lines, there are websites like Crossword Tracker that offer informal cluing help culled from online databases. For something more formal, there’s XWordInfo, an online database of entries and cluing that also serves as an archive of NYT puzzles you can search for a small fee.

The NYT Wordplay Blog chronicles each day’s puzzle, including insights into the theme, key entries, and more, plus they’ve begun amassing helpful articles about crossword solving. Not only are there sample puzzles to download and solve to get you started, but there are lists of opera terms, rivers, and sports names to know to make you a stronger solver.

And if British-style or cryptic crosswords are your puzzle of choice, look no further than The Guardian‘s Crossword Blog, which frequently posts about various cluing tricks employed by crafting cryptic puzzle setters. Their “Cryptic Crosswords for Beginners” series of posts has discussed all sorts of linguistic trickery, covering everything from the NATO alphabet to elementary chemistry.

For other variety puzzles, our friends at Penny Dell Puzzles offer sample puzzles and helpful solving tips for many of the puzzles in their magazines. For example, you can find a sample Kakuro or Cross Sums puzzle on the page for their Dell Collector’s Series Cross Sums puzzle book, as well as a How to Solve PDF.

Is there a particular puzzle that troubles you, or one you find too intimidating to tackle, fellow puzzlers? If so, let us know! We can either point you toward a solving resource or tackle the puzzle ourselves in a future post to provide helpful solving tips!


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5 Questions for Constructor Doug Peterson

Welcome to 5 Questions, our recurring interview series where we reach out to puzzle constructors, game designers, writers, filmmakers, musicians, artists, and puzzle enthusiasts from all walks of life!

It’s all about exploring the vast and intriguing puzzle community by talking to those who make puzzles and those who enjoy them! (Click here to check out previous editions of 5 Questions!)

And I’m excited to welcome Doug Peterson as our latest 5 Questions interviewee!

Crossword gentleman and constructor Doug Peterson is a regular in the Los Angeles Times and many other outlets, offering topnotch grids and brilliantly fun, pop-culture-savvy cluing. Doug was also one of the constructors in this year’s Lollapuzzoola crossword tournament and a winner at this year’s American Crossword Puzzle Tournament. Anytime you encounter one of his puzzles, you’re guaranteed a great solve.

Doug was gracious enough to take some time out to talk to us, so without further ado, let’s get to the interview!


5 Questions for Doug Peterson

1. How did you get started with puzzles?

Like many others, I caught the puzzle bug from older family members, specifically my dad and maternal grandmother. I’d spend summers at my grandparents’ house, and my grandma always had a stack of Dell puzzle books on hand. My favorite thing was to tackle one of the huge 21×21 crosswords, which would literally take me days to finish. And that was great, because I had a lot of long, boring days to get through.

2. What, in your estimation, makes for a great puzzle? What do you most enjoy — or most commonly avoid — when constructing your own? What do you think is the most common pitfall of constructors just starting out?

I think the most important element in a puzzle is craftsmanship, meaning that significant effort has gone into making that puzzle as enjoyable as possible. I realize that’s a little vague, but it’s like the old line about pornography: “I know it when I see it.” Basically, the theme, fill, and clues should all demonstrate care and a personal touch.

I’m not the best at coming up with themes, so I strive to make my fill and clues pick up the slack, so to speak. There’s plenty I avoid in my grids, and I’m getting pickier all time. For the record, I’ve never used ÉTÉ in a grid. I don’t trust three-letter words with two accent marks. Also on my “banned list” are IDI, AMIN, and ULEE. I’m not going there. I hate brutal dictators, and bees kinda scare me.

The most common pitfall I’ve found among newbies is trying to do too much right out of the gate. My advice is to get a few 15×15’s under your belt before trying to construct that 21×21 triple rebus with five meta-answers and a tribute to your favorite band hidden diagonally. My first published puzzles are embarrassing to look at now. I used PATLY in my debut puzzle. PATLY? That barely resembles a word that a human would use. But I got better, and by the time I was ready to tackle something truly challenging, I had some constructing chops.

Teaser: I’ll give my best advice to newbies (and all constructors) in my answer to Question 5.

[Two of Doug’s books currently available on Amazon: Sit & Solve© Brain-Straining Crosswords and Sit & Solve© Lickety-Split Crosswords.]

3. Do you have any favorite crossword themes or clues, either your own or those crafted by others?

We’re living in a golden age of crosswords, and there are so many superb themes and clues out there, and of course I can’t think of anything specific off the top of my head right now… I solve a crapload of puzzles, more than 20 per week, so honestly it’s hard to single out themes or clues that made me say “Oooh!”

Constructors whose themes I admire include Brendan Emmett Quigley, Andrew Ries, and Erik Agard. They’re at the top of my “why the hell didn’t I think of that?” list. BEQ publishes two free high-quality puzzles a week, which boggles my mind. And he used to do three a week! Just recently, he posted puzzle #900. I would have burned out years ago. BEQ’s puzzles are a blast to solve, and they’re hip without being eye-rolly.

Andrew Ries publishes a weekly crossword (www.ariesxword.com) that’ll run you $12 bucks a year (a steal!) and consistently features fresh themes and clues. It’s often my favorite puzzle of the week. And then there’s Erik Agard over at gluttonforpun. Mind-bending, multi-level themes and clues that make me laugh out loud. This dude is the next wave of crossword puzzles.

The best venue for stand-out themes by a variety of constructors is Fireball Crosswords, edited and sometimes constructed by Peter Gordon. Shameless plug: I constructed the first Fireball puzzle of 2017, which will hit solvers’ in-boxes in January. It’s a theme that’d been bouncing around in my brain for over two years, and I finally got off my lazy butt and made the puzzle.

Cool entries do tend to stick in my head, and a couple recent entries I loved (and wish I’d thought to use myself) were BEER O’CLOCK and DC UNIVERSE. Both were in puzzles by another of my favorite constructors, C.C. Burnikel. She turns out quality puzzles on a regular basis. In fact, on a more-than-regular basis. C.C. is remarkably prolific. Nary a week goes by that I don’t solve a well-crafted Burnikel puzzle in one of the major outlets.

4. What’s next for Doug Peterson?

On the constructing front, I’d like to branch out a little and create more non-American style crossword puzzles. I love constructing cryptic crosswords. I had a couple published in the New York Times ages ago, and then I drifted away from them. I got my start writing cryptic clues back in the Dark Ages in the rec.puzzles.crosswords Usenet group. (Psst, constructors. No one remembers USENET anymore, so stop putting it in your grids. SYSOP, too.) And maybe I’ll try my hand at constructing a Rows Garden or a Marching Bands puzzle. Something outside my comfort zone.

[A. A familiar Sudoku grid; B. A Kakuro (or Cross Sums) grid; C. A Nurikabe
grid, a variation on Minesweeper-style solving; D. A Hashiwokakero grid,
which readers might remember from this year’s UK Puzzle Championship.]

Speaking of comfort zones, on the solving front, I want to get much better at solving logic puzzles. And by “get much better at,” I mean “actually be able to solve.” I’m talking about Sudoku, Kakuro, Nurikabe, Hashiwokakero (yes, that’s an actual puzzle type I just found on Google), all the puzzles with Japanese names and little lines and boxes and circles. I’ve solved maybe ten Sudoku puzzles in my life, and it would be cool to stretch my brain in another direction or many other directions.

And hey, it will open up a whole new world of puzzles that I can print out and never quite get around to solving!

5. If you could give the readers, writers, aspiring constructors, and puzzle fans in the audience one piece of advice, what would it be?

To aspiring constructors, my best advice is: Solve puzzles! I cringe when I hear a constructor say that they don’t solve puzzles or “can’t” solve puzzles. Just looking at answer grids or reading reviews of puzzles isn’t enough. To me, solving is the only way to figure out what sorts of things make a puzzle enjoyable. There’s a reason I don’t use ULEE in my grids, aside from my slight apiphobia. It’s because it bugs me when I see it in a puzzle I’m solving.

Create the kinds of puzzles that you enjoy solving, and you can’t go wrong. (Unless you like solving really crappy puzzles for some reason.) And if you’re interested in being published and getting paid a few bucks for your hard work, it’s essential to solve puzzles from the venue you’re submitting to.

OK, I’ve rambled on long enough. Look for my été-free puzzles in all the usual places. Thanks for reading. Peterson out.


A huge thank you to Doug for his time. Be sure to follow him on Twitter for the latest updates on all his puzzly creations!

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It’s Follow-Up Friday: More UK Puzzles 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’m returning to the subject of big international puzzle events!

A few weeks ago, the UK Puzzle Association hosted the 2016 UK Sudoku Championship. And this weekend, they’ve got another major puzzle event in store for puzzlers worldwide: The 2016 UK Puzzle Championship!

The event spans June 24 through June 27, and chairman Alan O’Donnell of the UK Puzzle Association sent out the Instruction Booklet for this year’s event a few days ago, continuing a string of major puzzle events in Europe and across the world.

Although the UK Puzzle Championship is only open to competitors from the UK — with the top two earning a place on the UK team for the 2016 World Puzzle Championship — international players are welcome to test their puzzly mettle as guest solvers.

But even if most PuzzleNationers aren’t eligible to compete, you can still enjoy the challenge of some topnotch puzzles. Let’s take a look at some of the diabolical puzzles they’ve cooked up for this year’s event!

This Banknotes puzzle sets the tone for much of the Instruction Booklet to come, offering a number-placement puzzle with clues outside the grid. In this case, you have different valued 3×1 “banknotes” to place in the grid, and their total values add up to the numbers outside a given row or column.

So this is a bit like the game Battleship, except with different valued ships instead of different sized ones.

Here we have a more traditional Fill-In puzzle, but with an nontraditional grid shape. This one is all about efficient word placement.

Instead of placing words into this grid, the Cloud puzzle asks you to fill in which squares are covered by “clouds,” based on the total number of cloud-covered cells given on the outside of the grid. This is essentially a small Logic Art puzzle.

This Hidoku turns the usual Sudoku-solving on its ear by requiring you to place the numbers 1 through 25 into the following grid so that they form an unbroken chain. Consecutive numbers must touch, either horizontally, vertically, or diagonally.

For fans of Penny Dell Puzzles, this is like Sudoku and Word Maze had a diabolical little baby.

[I left the solution in with this one to help illustrate the solving style.]

Hashi is an intriguing deduction puzzle that follows the same cluing mentality as Blackout! or Minesweeper. Each circle contains a number indicating how many “bridges” connect that “island” to the other islands either vertical or horizontal to that island.

You’re essentially building your own Word Trails puzzle with Hashi, except you’re using numbers instead of the letters in a famous saying.

This is probably my favorite of the puzzles I’ve encountered in this Instruction Booklet, and I’m definitely looking forward to solving it this weekend.


These puzzles are just a sampling of the numerous puzzles you’ll tackle if you accept the UK Puzzle Championship challenge.

Not only are Kakuro and Sum-Doku (or Killer Sudoku) included, but also other twists on classic solving styles like Fill-Ins, Deduction puzzles, and Logic Problems.

You can check out the full Instruction Booklet here, and remember, you’ll have two and a half hours to solve as many of the 29 puzzles in the packet as possible, so good luck on June 24!


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