Archive for March, 2012

Sudoku Xtra 18

Sudoku Xtra 18The 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.

Sudoku Xtra 16Sudoku Xtra 17

Non-Consecutive Sudoku


Non-consecutive Sudoku puzzle
I’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!