Sudoku Xtra 18
Mar 28th
The 18th issue of Sudoku Xtra is now available, either pre-printed or as a downloadable PDF. It’s designed so each page can be printed separately, so you need only print the puzzles you want to try, and all of the puzzle content is in black and white.
This issue features 130 logic puzzles in a wide range of designs and sizes, from 5×5 right up to larger than 30×30. Puzzle types include Yajilin, Heyawake, Nurikabe, Masyu and more of the Windows puzzles introduced in the previous issue, plus an enormous range of different Sudoku variants including many seen on this blog.
There’s also a packed Community Puzzles Section featuring content from the world’s best puzzle authors, such as David Millar’s awe-inspiring Knighted Samurai Shape Sudoku through to more of Vexus Puzzle’s delightful route-finding Tiktaka.
Sudoku Xtra 16 and Sudoku Xtra 17 have also been published since I last updated this blog, so head over to the Sudoku Xtra magazines page for more details.
You can also view a full list of the contents of each magazine on the Sudoku Xtra site.
Non-Consecutive Sudoku
Mar 28th
Non-consecutive Sudoku puzzleI’m currently working on a new book of sudoku variants for a major publisher, so have been making lots of new puzzles of different types. From time to time I’ll probably post again here with some examples of these.
I thought I’d start off with Non-Consecutive Sudoku. This is a minor variant on Consecutive Sudoku, where all the rules of standard Sudoku apply but there is one additional constraint:
- Neighbouring squares are not consecutive. This means there is never a difference of ‘1′ between two edge-adjacent squares (i.e. touching, not including diagonally).
For example, if a square contains ‘3′ then any neighbouring square cannot contain either ‘2′ or ‘4′.
Good luck!
Jigsaw Sudoku 6×6
Nov 18th
Jigsaw 6×6 puzzle 2
Jigsaw 6×6 puzzle 1I just made some Jigsaw Sudoku puzzles for a book and had a couple spare which I thought I’d post here. Just place A to F once each into every row, column and bold-lined jigsaw shape.
Giant maze
Nov 3rd
I’ve recently made a few mazes for a puzzle book, which included one that was too large to go in in the end – so I thought I’d post it here. Have fun. 
(Just find your way from the in arrow to the out arrow…)
Sudoku Xtra Issue 15
Jun 15th
Sudoku Xtra issue 15 is now available for download from SudokuXtra.com, and it’s another packed issue of the logic puzzle magazine. With 59 different types of logic puzzle at a wide range of difficulties it’s got something in it for everyone, and it’s far from just Sudoku and variants. In fact there’s not a single regular 9×9 Sudoku in the whole magazine! From the giant cover Masyu through to the Tapa, Heyawake, Nurikabe, new puzzles and more there is plenty to keep you busy.
The magazine can be downloaded as a PDF and printed at home, or it can be ordered pre-printed from Lulu or Amazon.com (the last of these coming in the next week or so, once their system updates and lists it).
I’m also now posting full lists of content over on the magazines page at SudokuXtra.com,so you can click the expanding links to see a list of every puzzle in both this and the previous two issues, as well as order back issues.
And talking of back issues, I didn’t post here previously but issues 13 and 14 are also available (and have been for 4 and 2 months respectively), although the Amazon.com issues of these have only just been uploaded so again these should appear in the next week or so.
Skyscraper puzzles
Mar 16th
I’ve just added Skyscraper puzzle support to Puzzlemix. Hop on over if you’d like to try playing Skyscraper puzzles online!
This means that there are now 16 different types of puzzle on the site, plus a variety of sizes for each of those puzzle types.
7×7 Calcudoku+
Mar 14th
I had a request for a 7×7 Calcudoku-esque puzzle that uses only + operations, so I thought “why not?”. And here it is.
Sudoku Xtra 12
Jan 25th
I must apologise for the delayed announcement, but Sudoku Xtra issue 12 has been available for a while from www.sudokuxtra.com. Both download and pre-printed copies available.
The cover puzzle is a giant Masyu, and then it follows through from there with the usual varied mix of sudoku variants and other puzzles, plus an extra-large bumper-packed Community Puzzles section.
This issue features more than 65 pages, leading to a record-breaking total of 139 puzzles! You’d need to complete more than 4 a day in order to do them all in time for the next issue. There are also two special Christmas Tree Sudoku puzzles (both much easier than they might look and really quite fun I think!) – it may be past Christmas now but they’re still fun puzzles!
Issue 13 is also due out in the next few days.
Sudoku [Jigsaw] 6×6
Dec 7th
Sudoku 6×6 puzzle
Jigsaw 6×6 puzzle
I had a couple of 6×6 Sudoku puzzles left over when making issue 58 of Sudoku Pro magazine, so I thought I’d post them here.
Just place 1-6 into each row, column and bold-lined area.
Sudoku Xtra 11
Oct 22nd
Sudoku Xtra 11 is now available, and it is packed with even more puzzles then last month!
The cover features a Boomerang Samurai, made up of 10 overlapping 8×8 puzzles, and then later on there’s a double-page spread with a real X factor, the facing Return of the Boomerang 1 & 2 – consecutive and odd/even-pair variants.
There are also heyawake, yajilin, nurikabe, masyu, dominoes, calcudoku, slitherlink, killer sudoku prime, killer sudoku pro +/-, variant size jigsaw, hitori and many more puzzle types. And there’s a second huge 13-grid 9×9 Samurai, with a Consecutive Samurai 13-X – every bit as huge and intimidating as you might imagine!
The Community Puzzles section this month welcomes another new contributor, Deb Mohanty, a key member of the Indian puzzle community and author of some very well-respected puzzles and competitions. His “No 4 in a Row” puzzles will challenge your ability to both spot the “obvious” and also reason using uniqueness logic! There are also more Labyrinth puzzles, more Haijo from Vexus, an alternative set of Yajilin from Thomas Collyer, and the hexagonal ‘Hexagodoku’ from Clarity Media. David Millar’s mighty Knight Samurai Sudoku +/- will test your Sudoku variant skills to the limit, with its five grids of attacking knights and positive and negative numbers. And that’s just some of what’s in the section this month.
Sudoku Xtra 11 is available for download as a PDF, as well as pre-printed from Lulu and also from Amazon.com (eligible for free super-saver shipping!).
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