April 03, 2010

Friday Puzzles #38

A belated entry this week, as I have been travelling somewhat. There’s more travelling to look forward to at the end of the month too, with the world sudoku championships in Phiadelphia. As such, this week’s puzzle is a sudoku variant known as Arrow Sudoku. Standard sudoku rules apply, and additionally, the number that goes into a grey circle is precisely the sum of the numbers to be found on the corresponding arrow.

Do note that numbers can repeat on the arrows, and enjoy!

#046 Arrow Sudoku – rated hard

All puzzles © Tom Collyer 2009-10


- 3 comments by 1 or more people Not publicly viewable

  1. Jack

    Nice to see an arrow sudoku here – I think its one of the more interesting “mutant sudoku” variants. Once you get a good “in”, this one comes together pretty quickly, but satisfyingly.

    04 Apr 2010, 16:08

  2. Fred76

    Nice grid, no so difficult, but there are a couple of things to see. I like the appearence of the grid with this disposition of digits and arrows.

    Fred

    P.S.: On the other side the anti-spam question for the comment on your blog is too difficult. I almost did not answer lol .

    25 Apr 2010, 22:17

  3. Haha, thanks for the comments.

    The anti-spam question was designed to be as unlikely as possible for a spam-bot to crack, but easy enough for someone with half a brain to answer in a second!

    25 Apr 2010, 22:29


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Welcome to the blog of current UKPA sudoku champion, two-time Times national sudoku champion and general logic puzzle fan Tom Collyer.



Home of the original Friday Puzzles, each Friday I publish a 100% original and handmade logic puzzle, inspired by the world-famous Nikoli company.


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Latest comments

  • I like the appearance of the solution. :P Nice one. by Prasanna Seshadri on this entry
  • I think I've seen something vaguely similar in some of Palmer's puzzles as well. To be honest I've a… by on this entry
  • That's two puzzles in a row where I find something I had used before. I know, not plagiarism; just g… by Bram on this entry
  • Kota, that's not really true. I had made my puzzle before going to the WPC already. Also I don't hav… by Bram on this entry
  • About 20 minutes, after restarting from a mistaken conclusion. by Bryce Herdt on this entry

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