Archive for May, 2010

Sudoku Xtra 7 magazine now out

May 26th

Posted by Gareth Moore in Books

Sudoku Xtra Issue 7 coverSudoku Xtra issue 7 is now out! It’s available for download and also pre-printed from Lulu (for UK and most of the world), with the Amazon.com pre-printed version (for the US) due to follow in around a week or so (once they update their database).

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.

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Samurai Killer Plus and Minus

May 14th

Posted by Gareth Moore in Killer Sudoku


Killer Plus Minus Samurai puzzle

If you’re a Sudoku Xtra reader you’ll have seen these in their regular 9×9 form in both issues 5 and 6, but this is the first time I’ve made a Samurai one, and the first time I’ve posted one here I think.

This is essentially a regular Killer Sudoku puzzle, except that instead of placing 1 to 9 you must place -4, -3, -2, -1, 0, 1, 2, 3 and 4 into each row, column and bold-lined 3×3 box.  There are also two overlapping 9×9 grids to solve simultaneously.

As in regular Killer, the values in each dashed-line cage must sum to the given total, and you cannot repeat the same number within any one cage.

Good luck! :)

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Sudoku Xtra 6 available worldwide

May 3rd

Posted by Gareth Moore in Published books

Sudoku Xtra issue 6 coverI’m pleased to announce that Sudoku Xtra issue 6 is now out and available for the full triumvirate of download and self-print, pre-printed from Lulu (recommended for most of the world) and also free same-day posting from Amazon.com (recommended for US). 

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! :)