There’s an ‘S’ theme for a few of the puzzles this month, as you can see on the cover (right).

This issue I’m very excited to welcome some brand new Community Puzzles section contributors – Thomas Collyer, the two-time UK Times National Sudoku Champion; and Grant Fikes, one of the most prolific authors of Japanese puzzles outside Japan itself – who have very kindly donated some fantastic puzzles to this issue. There are also some brilliant Slitherlink/Sudoku cross-over puzzles by David Millar of The Griddle, and that’s only half of the section described so far!

The rest of the magazine as always has some new variants and rearranged content in, including Killer Prime (Killer Sudoku with prime numbers…) and Skyscraper S (a twisted 6×6 Skyscraper variant!). At just £3.99/$5.99 for a download it’s still incredible value even when compared to cheaper mags – with 116 puzzles that’s less than 4p/6¢ a puzzle, and you’d have to average around 4 a day to get the whole issue complete in time for issue 9!

With over 50 different types of puzzle in issue 8, what are you waiting for?!

Issue 51 of Sudoku Pro is on sale in independent newsagents now – you won’t find it in WH Smiths or your supermarket, but your local newsagent will be able to order it for you if they don’t already have it on the shelves. Or alternatively you can subscribe via the My Hobby Store website, and save some money and get it delivered to your door as soon as it’s available every month. At £22 for 12 issues it’s pretty amazing value. I have issue 51 in my hands and it looks as good as ever, now being in a slightly smaller and therefore more easily portable format.

If you enjoyed Sudoku Pro before then you’ll certainly enjoy it again, since the selection of puzzles is almost identical. If you’ve never read it but would be interested in a magazine packed full of Sudoku variants and other Japanese puzzles, then please do seek it out to ensure it sells enough issues to keep going strong!

Sudoku Xtra

Issue 7 of Sudoku Xtra contains even more large-page Japanese puzzle fun, with an incredible 116 varied logic and number puzzles. A special section in this issue is devoted to giant puzzles, with the 13 full-page puzzles including Hanjie, Nurikabe, Yajilin, Slitherlink, Hashi, Samurai Sudoku variants, Kakuro and more.

Sudoku Xtra offers greater variety than any other puzzle publication, with a huge range of Sudoku variants that include Jigsaw, Extra Region, Skyscraper, Consecutive and many more. Other featured puzzles include Calcudoku, Futoshiki, Hitori, Killer Sudoku and a range of variants, including Zero Killer Sudoku Inequality!

Designed to print on either A4 or Letter paper, or pre-printed on similarly large paper, Sudoku Xtra features puzzles at a range of difficulties, so is suitable for both logic puzzle fans and casual solvers alike. No matter what you like, you’re sure to find many puzzles to enjoy in Sudoku Xtra issue 7.

There’s also another great Puzzle Community section too, thanks to the generous contributors. Puzzles sent in for issue 7 include Navigrid, Mini Killer Sudoku, Knighted Sum Sudoku, Fillomino and more.

Get Sudoku Xtra 7 now.

It’s packed with a frankly ridiculous 133 separate puzzles. The range of content includes:

• Light-up / Akari
• A large cover Nurikabe puzzle
• -4 -3 -2 -1 0 1 2 3 4 Killer Sudoku – back by popular demand!
• A third Jigsaw 6×6 Variety Pack of miniature variants
• An extra-big Yajilin
• Killer Inequality Sudoku – lots of symbols on a grid!
• Dominoes - first time back since issue 1
• Plus all of the regular puzzles, from Skyscraper to Samurais to Calcudoku to Hashi to Hanjie to Kakuro and so on…

There’s a bumper-packed Puzzle Community section too, thanks to the generous contributors. Just look at some of the types that are in issue 6: 

• Yin Yang Sudoku
• Sudoku Minus (a trickier version of Sudoku Times!)
• Hexagon 25
• Klump
• Modula
• and more!

So if you’d like a copy (and if not, why not?! ) then just pick one of these links:

Download and self-print *  Lulu *  Amazon.com

Have fun!

I’m very pleased to announce that issue 5 of Sudoku Xtra magazine is now available for download or in pre-printed form from either Amazon.com (US) or Lulu.com (recommended for rest of world).

This issue has even more puzzles than the previous ones, with a pretty mind-boggling 131 separate logic and number puzzles!

New content includes:

• Suraromu – the latest loop puzzle from Japan
• PivotPix (a.k.a. Tentai Show / Sym-a-Pix)
• -4 -3 -2 -1 0 1 2 3 4 Killer Sudoku!
• An extra page of Yajilin, designed to help you get into the puzzle
• Some new Sudoku combinations

Plus the regular stuff is there too, including:

• Another Jigsaw 6×6 Variety Pack of miniature variants
• More Sudoku at more sizes than ever before
• Lots of Sudoku variations on a theme
• All of the other regular puzzles, from Skyscraper to Samurais to Calcudoku to Hashi to Hanjie to Kakuro and so on…

And the generous puzzle community contributors have been as creative as ever. Just look at some of the types that are in issue 5: 

• Kuromasu / Kurodoko
• Sudoku Times (outside products)
• Hexagon 25
• Shapely Alleys and Skyscrapers
• Modula
• Pathfinder
• and more!

As always, it’s designed to print well in black and white on either A4 or Letter paper, using up most of the space and without pointlessly wasting ink on large dark areas. If you have a colour printer there’s a small colour trim to each issue – this month’s is orange – but this prints fine as a greyscale. Pre-printed copies have a colour cover but black and white interior.

So check it out!

Issue 4 of Sudoku Xtra magazine is now with us!  I really think I might be putting too many puzzles into it, because typing up the list of content just knocked me out with how much is crammed into its 52 large-format pages!  Is too much possible?  I don’t know, but look at this enormous list:

128 puzzles in total, including several seriously giant ones.  Brand new for this issue:

• Samurai Star Killer Sudoku Pro
• Number Link Samurai
• Odd Pair Sudoku
• Samurai Odd Pair Sudoku
• Sudoku Inequality Jigsaw
• Jigsaw Sudoku 6×6 Variety Pack (including toroidal, inequality, X, consecutive and killer)
• Killer Sudoku Pro Jigsaw
• Sudoku 15×15 and Sudoku 18×18
• Killer Sudoku 15×15
• Odd & Even Pair Sudoku
• Killer Sudoku Prime

Regulars from issue 3:

• Hanjie
• Masyu
• Calcudoku (three times as many as in previous issues!)
• Slitherlink
• Consecutive Sudoku
• Hitori
• Samurai Star
• Samurai Star Jigsaw
• Number Link
• Jigsaw Sudoku 8×8, 9×9 and 10×10
• Toroidal Sudoku and Toroidal Inequality
• Kakuro
• Futoshiki
• Killer Sudoku
• Skyscraper
• Skyscraper Sudoku
• Samurai Sudoku
• SSSS: Skyscraper Samurai Star Sudoku
• Sudoku Inequality
• Sudoku Extra Regions
• Jigsaw Sudoku Extra Regions
• Killer Sudoku Jigsaw
• SOS: Samurai Outside Sudoku
• Outside Sudoku
• Sudoku 8×8
• Sudoku 12×12 and 16×16
• Samurai Extra Regions
• Yajilin
• Nurikabe

Adding to that already exhausting list still further are the community puzzles: 

• Heyawake
• King’s Journey (also known as Hidato[TM], Numbrix[TM] and many other names)
• Mosaic (Minesweeper picture puzzle)
• As Easy as ABC
• Knight’s Tour
• Shapely Skyscraper
• Isolate
• Klump

And all of this for just £3.99 or $5.99 – it really is fantastic value!

If you’d like to get hold of it just pop on over to the Sudoku Xtra website!

Right at the moment it’s only available in printed form, but I’ll have download copies available in the next couple of days – as soon as I’ve added a purchase mechanism to SudokuXtra.com in fact!

I’ve decided that I’m going to make a series of similar books of particular requested puzzles, all of which will be branded as “Sudoku Xtra Specials”.  In this way I can stay organised by keeping all of my download/printed content under the ‘Sudoku Xtra’ heading.  It means that you’ll always be able to find all of my new content in one place, without searching around my various sites.

This book is probably the nicest collection of 25×25 puzzles you can find, if you’re a fan of such things.  Every puzzle has really nice 8-way symmetry – having noticeable patterns in puzzles like this is pretty unusual, and it can help with the solve too.  Just as in my magazines, I’ve thought about what’s sensible in a puzzle like this so they can all be solved without needing pencilmarks.  How exactly would you go about making A-Y pencilmarks in each individual square anyway?!

If you get hold of it please do let me know any thoughts you have on it.  In the same way as for Sudoku Xtra magazine, it’s designed to be printed at home on either an all-together or a page-by-page basis.  And if you get a pre-printed version from Lulu or Amazon.com (already complete but waiting on listing now) then it’s on a large A4 (Lulu) or 8″x10″ (Amazon) page, so there’s plenty of room to write in the solutions.

If there are other books of puzzles you’d like to see, please let me know in the comments here or on the Sudoku Xtra forums – feel free to repeat any requests you’ve made before! Next up is 16×16 Sudoku but after that it’s all open. I was thinking of doing Inequality Sudoku third, but what do you think?

This issue is packed full of all sorts of puzzles, including SOS (Samurai Outside Sudoku!), Toroidal Inequalities and many more.  Community puzzles include picture puzzle Mosaic from Clarity Media, and some fantastic Slitherlink-Masyu cross-over puzzles called Shotgun Slitherlink from David Millar of The Griddle.  There’s also some brilliant Klump and Navigrid puzzles from Vexus Puzzle Design.

With 121 puzzles it will almost certainly take you far more than the month until issue 4 to complete, so you’d better get hold of it as soon as possible!

Pre-printed versions will be available in the next couple of days, but you can download and print it yourself immediately!

I’m very pleased to announce that as of 24 hours ago Sudoku Xtra issue 2 is available for download or ordering in printed form.

It contains a staggering 121 puzzles, with only just a few of each type so there is a huge range of variety. At just £2.95/$4.95 it really is great value, but if you’re still not sure take a look at the sample part of issue 1 still available on the Sudoku Xtra site.

New puzzles for this issue include some crazy Sudoku variants, such as Samurai Killer Calcudoku Inequality, and a whole load of novel community-supplied puzzles, including Puzzle L and Knight’s Tour.

With so many different puzzles you’re sure to find not just one but lots of puzzles you’ll enjoy, so check out Sudoku Xtra today!

If you’ve read issue 1 then you’ll know that I’ve proposed a ‘community’ puzzle section at the back, where people get to send in their own puzzles and I will include a selection in a special section.  The idea is to try and build up the kind of puzzle community that some of the Japanese-language publications have, but which we haven’t yet seen in an English-language magazine. Hopefully it will lead to a virtuous spiral, with on the one hand people who contribute puzzles getting a larger audience for their own work whilst similarly on the other hand encouraging more people to read the magazine for the novel puzzles – and hopefully all the while encouraging more feedback too, which will help everyone.

In time for the second issue I’m not realistically expecting very many submissions – after all, it won’t be long before I need to start finalising content for issue 2, and that doesn’t give people much time to buy the magazine, think about puzzles, draw them up and submit them.  So in order to help things get going I’ve approached a few people who regularly create top-quality puzzles of their own and asked them if they’d be happy to contribute a puzzle or two to issue 2.  Therefore I’m very pleased to announce that David Millar of  The Griddle has agreed to provide a couple of his excellent designs for issue 2.  If you take a look at his site you’ll see that he regularly posts a huge variety of different puzzle types, and it will be fantastic to have some of this content to help launch the community section of Sudoku Xtra issue 2.

That was pretty quick, and is great news!  I already have my proof copy from them, and it looks just fantastic – lovely glossy colour cover, and fantastic quality printing within.  It’s essentially a  large size magazine printed at top book quality, and the paper it’s on is perfect for either pencil or pen solving.  It’s much better quality than a regular store puzzle magazine (particularly US ones, which are typically on very cheap and thin paper).

As mentioned yesterday, the most exciting feature (other than being able to view and buy and read about the magazine!) is the new discussion forum.  It’s a pity Sudoku Pro never had one, because the old BBC MindGames one (which incidentally featured a large number of my puzzles too) was always great.  It would be brilliant if we could make the Sudoku Xtra forums just as good! Here’s hoping…

If you’ve got issue 1 (or even if you haven’t!) please feel free to let people know about it – building up a readership is of course an important part of launching a new magazine, particularly one that won’t be on shop shelves any time soon!

I’ll also be adding more content to sudokuxtra.com over the coming week, including a discussion forum.

The magazine is 44 pages long, each page 8 inches by 10 inches (20cm by 25cm), and with exactly 100 puzzles in. It prints really well on both A4 and Letter paper, either 1-up (one page per sheet) or 2-up (two pages per sheet) as you prefer. There is a small preview on the Lulu site if you’d like to see what you’re getting (or read back through previous posts here too!). If you order the printed Lulu version you will actually get some extra blank pages at the back to make it up to their minimum page count for an A4 publication, so ignore the page count on the Lulu description.

Click here for a printed copy of the magazine: Sudoku Xtra issue 1 on Lulu

I haven’t yet set up the subscriber ordering site (it will be at SudokuXtra.com hopefully within 24 hours), but if you want to get in right away you can click directly on the Paypal buttons below, and then I will email you a PDF version of the magazine within 24 hours. Once the website is up and running you’ll receive the magazine immediately, so this is just temporary for the next day or two.

If you’re in the US or Canada and want a printed copy you have three choices: wait for it to appear on Amazon in a week or more (you might want to do this to get free delivery as part of a larger order), order from Lulu using the link above, or (for the 8″ x 10″ Amazon.com version but without the option of free postage) order a printed copy of Sudoku Xtra from CreateSpace.com instead, who supply the printed copies for Amazon (in fact they’re owned by Amazon too).

However the best option of all for me – the one where I get most money from the sale – is to order a download version and print it yourself. You can print either the whole magazine or just the pages you choose. If you’d like to do this you also have the option to subscribe for a year (12 issues) for the price of 11 issues, if you’re keen! This also insures you against any price rises that might happen in the coming year. Just click one of the four Paypal purchase buttons below.

Note that when buying on Paypal you can click the ‘Continue’ link next to “Don’t have a Paypal account?” to pay directly with a credit card – you don’t need to create a Paypal account if you don’t already have one. The checkout process will say ‘PuzzleMix.com’, which is another of my sites.

Or for a 12-issue subscription:

By Friday night I had a complete draft of the magazine, without solutions yet in it, and so I spent the weekend away checking through the proofs and re-solving many of the puzzles.

Today I made a few revisions and so now I can confirm that apart from laying out the solutions (and finishing the colour cover that will go on the Amazon version) it is fully complete.  There are exactly 100 puzzles in the first issue of the magazine, including several full page ones, and I’ve tried to include something for everyone – so there are some large grids for the people who want them, but they don’t dominate the magazine by any means for the people who don’t like them.  I’ve also included some unusual variants which you probably won’t have come across before.

Because probably the majority of readers will be printing their own copies from a download version, I’ve designed it so that each individual page can be printed alone – each sheet is a standalone ‘work sheet’ of a particular type of puzzle, including summary instructions and an example solution.  So you don’t need to waste paper printing the whole thing – you can easily skip the puzzles you are less interested in, or only print them when you’re ready for them.

I’m really very pleased at how it’s turned out, and hopefully you will be too when you see it!  Thanks very much to everyone who has posted here or emailed me directly with comments on what they’d like to see, as well as on Sudoku Pro – you’ve really helped encourage me to get it done quickly, and it’s definitely informed the puzzles I’ve put in.  (For example I was going to not include any super-large regular Sudoku but after a few requests I’ve made sure there’s some in there, including a rather unusual 20×20 Sudoku with 5×4 boxes.)

It will be out this week, certainly by first thing Friday for anyone who would like it in time for the weekend. And that’s a promise!

(Yes, that’s not Slitherlink on the right but this is a mock-up at the moment!)

I’ve been working hard on Sudoku Xtra today and hopefully my new magazine will be ready really soon. Of course the first issue of anything will be more work than subsequent issues (I hope!), since there’s so much more stuff to do – from the title to the content to the basic design to all the infrastructure around it. Right now I’m just getting to the point where I’m happy with the page layouts and basic design, thus this posting to preview it.

Any design needs to print fine on black+white printers, but I’ve used a small amount of extra colour throughout for page top/bottoms so it looks a bit nicer when previewed on screen (and a little shinier if you have a colour printer), and I can vary this colour from issue to issue.

It’s an interesting task to design a print-it-yourself magazine because you can’t use very large areas of black/colour otherwise people won’t want to print it out (it will cost too much and on some inkjets will make the paper go all wrinkly), so with essentially just black+white and not much opportunity to use large shaded areas you’re pretty restrained – however all that said I think I’ve come up with a layout that works and won’t be too much work to update with new puzzles each issue.  There’s a small sample at the top of this post.

Going forward I imagine most pages will have 4 puzzles on, which seems to work well with the 8″ x 10″ page size.  People ordering a printed copy worldwide from Amazon.com will get it at exactly that size (and will get a bonus colour cover) for $9.99 and eligible for free super saver shipping.  I’ll also make it available in printed form from Lulu.com, which should be cheaper for UK residents – this will cost £5.99, although they add postage costs to this.  Oddly this will be supplied in A4 format due to the page sizes they support, but there’s no extra puzzle content in the extra space!  It will also be available for download, and the 8″ x 10″ page fits very nicely on both A4 and Letter pages without much wasted space.  You can also print it with two pages on one A4/Letter sheet if you don’t mind smaller puzzles, and it’s still perfectly legible and usable.  (I know this – I’ve tested it!).  Download copies will be £2.99 or $4.99 respectively.

PS As mentioned above if you look closely at the Slitherlink puzzles in the sample you’ll see they look suspiciously like Consecutive Sudoku puzzles – that’s because I haven’t substituted the graphics on that page yet!

Anyway, using Google’s page cache I’ve retrieved the previously-published URL:

http://viewer.zmags.com/auth.php?magid=210247

Note that to use this you will need your subscriber number, which was on the bit of paper with your delivery address. Enter that in the top box, and your surname in the bottom box.

It’s still working as of right now, at any rate.

And here’s the previous issue 49, also thanks to Google: http://viewer.zmags.com/auth.php?magid=198026

I can’t imagine these will keep working too much longer, but who knows?

Sudoku Xtra – The Magazine for Japanese Puzzle Fans

Today someone commented on my blog here about how Sudoku Pro subscribers who get in touch about their magazines are being told that Accolade Puzzles Ltd, the publisher, is no more, so I thought I should comment.

As a freelance puzzle author I get commissioned by a wide range of different publishers, and I don’t work (and never have worked) for Accolade Puzzles, the publishers of Sudoku Pro magazine, so I don’t know any of the gory details. What I do know is that sadly Accolade Puzzles have ceased trading and entered formal insolvency. I also see today that all mention of them is gone from their parent site, Accolade Publishing, and that the Total Puzzles brand site which covered all of their magazines now redirects visitors to the appointed insolvency practitioners

This is very sad news for me, because I always thought of Sudoku Pro as ‘my’ magazine – I wrote literally all of the content for it, from the front cover to the back cover, and not just that but all the little things too such as the puzzles instructions, hints and tips for the puzzle of the month and so on.  Every 4 weeks I sent all of the content off to the publisher and I always enjoyed receiving the magazine in the post, and trying out many of my puzzles anew.

It wasn’t marketing hype when the magazine claimed that the puzzles were hand-made – every single puzzle in the magazine was either entirely hand-made or had a significant manual component. None of it was churned out of an off-the-shelf Sudoku generator, unlike (it will hardly surprise you to know) just about every other Sudoku magazine you can buy. (My top tip for Sudoku puzzles is only to buy content with a named author on it!)  If you’re going to play puzzles created with a free generator someone found on the internet, you may as well print them yourself rather than pay someone else for the privilege. Sudoku Pro was never like that, and indeed the final issues had very few regular Sudoku puzzles in them at all – the majority were variants or other Japanese puzzles.

The final issue, number 50, was available digitally online, so for those who didn’t receive a printed copy you could try checking at the digital version site, if you had it bookmarked (I didn’t, so I can’t tell you what the URL was).  I’m afraid I’ve no idea if any printed copies were ever sent out, but I have a PDF I downloaded from the subscriber’s website just last week so I have a copy of issue 50 myself at least. I’d also sent all of the content for issue 51.

I suppose if the magazine was to end then issue 50 was a good number to reach. Of course I suppose it’s always possible that someone will buy up the assets and continue publishing the magazines, but I have literally no idea how likely that is. I thought their titles were way above the average puzzle mush on the market, and they certainly didn’t deserve to go under.

But this now leaves me with a big magazine gap in my life, and so on to my new project: Sudoku Xtra.

I’ve decided to start publishing a monthly puzzle magazine myself, initially along the lines of Sudoku Pro but then hopefully branching out to a wider range of logic and number puzzle content, and with even more variety.  I’m also hoping to encourage other puzzle authors to contribute.  The magazine won’t be essentially just a UK publication like Sudoku Pro but will be available worldwide for download from a website which  I’m in the process of setting up, and also in a printed version from Amazon.com. The printed version will cost $9.99, to cover the on-demand printing cost, but the download version will most likely be just $4.99. In UK pounds that’s about £2.99, which is pretty much what Sudoku Pro cost. It will be formatted in large page format, at 8″ x 10″, so Amazon-delivered copies will be much larger than book size, and it will  nicely fill the page size for both worldwide (A4) and US (Letter) printers.  If it is successful enough then I will also make it available for order in printed form from Amazon.co.uk and many other sites (an up-front cost I am avoiding until I know I can cover it!). At least to start with it will be entirely black and white, so anyone can print it without trouble.

If you’re a puzzle author and would like to contribute, please get in touch. Initially any money made will go to cover costs so I can’t offer any payment for content other than a free PDF copy, but hopefully I’ll be able to grow the magazine both in terms of readership and content and it will be a worthwhile thing to contribute to and indeed receive. And then going forward, who knows?

Also if this is something you’d be interested in buying then please post here too with any comments, including what sort of puzzles you’d like to see and how many puzzles you’d expect in the magazine (Sudoku Pro had 67 puzzles, plus the four brain workouts on the back page). I am assuming that a monthly (12 issues/year) format would be best, although without any distributor schedule to keep to this could be flexible and shift around slightly.

Perhaps the (probable) end of one magazine can also signal the beginning of something new?

The latest issue is number 49, and the puzzles in it include:

• Hanjie
• Killer Sudoku (and Killer Sudoku X)
• Jigsaw Sudoku (both 6×6 and 9×9)
• Sudoku X
• Toroidal Sudoku
• Futoshiki
• Nurikabe
• Masyu
• Yajilin
• Hitori
• Dominoes
• Sudoku Inequality
• Battleships
• Hashi
• Kakuro
• CalcuDoku
• Consecutive Sudoku
• Sudoku Extra Regions
• Samurai Sudoku
• Samurai Star (Sudoku)
• Slitherlink
• Jigsaw Killer Sudoku
• and of course Sudoku (including 6×6, 9×9, 12×12, 16×16 and 25×25)

Plus each issue has a guest ‘master class’ puzzle – issue 49’s guest puzzle is Number link.  And there’s also the Mind Gym at the back, which this month features various memory tests.

There’s more details and some sample pages on the Total Puzzles website.

PS Sorry I haven’t posted for a while – I’ve had various distractions, both work and family, over the past month, but as of tomorrow hopefully things are going to return to relative normality!