All entries for February 2011

February 25, 2011

Friday Puzzles #93

So no controversy in the difficulty rating this week I hope, as I’m continuing my trend of hopefully introducing new puzzle types to newcomers to the blog (hello!). This week it’s hitori – in a relatively small grid. With this size it’s a bit of a challenge to put out something that squeezes between totally trivial and fiddly lame puzzles that are all too common in the hitori world. I reckon I just about succeed with this one. Enjoy!

#119 Hitori – rated easy

All puzzles © Tom Collyer 2009-11


February 18, 2011

Friday Puzzles #92

So – Kakuro. Let the wall of silence begin! This one is genuinely hard this week too. Not hard in the lame way you get with computer generated Kakuro and you end up having to do lots of adding up with overlapping squares, but certainly hard enough to need a few “painting” steps. You might want to keep your advanced sudoku solving technique handbook with you as well. Enjoy!

#118 Kakuro – rated hard

All puzzles © Tom Collyer 2009-11


February 11, 2011

Friday Puzzles #91

And so, dearest reader, we will once more traverse the logical minefield that is numberlink. I’m 95% sure that the solution I have in mind for this week’s puzzle is rigid to the point of being unique – which is interesting because at first glance it doesn’t seem like it should be the case.

I’m hoping very much that this ambiguity is what actually makes this a rather hard puzzle. Assuming that I haven’t bodged it, this is definitely not an easy, and probably rises above medium too – although I’m not a great judge of numberlink difficulty. And as always with numberlink, I think the most valuable feedback would be directed towards any potential multiple solutions anyway, so I positively encourage you to try and break this rather than worry too much about my grading…

And to think I was going to risk yet another comment free week by doing a kakuro! Maybe next week eh. Enjoy!

#117 Numberlink – rated medium

All puzzles © Tom Collyer 2009-11


February 04, 2011

Friday Puzzles #90

I’d definitely recommend the Guardian as the cream of the current UK newspaper sudoku offerings. There may be harder puzzles available elsewhere, but the Guardian puzzles always solve very cleanly, and often come with really striking designs. These are two aspects of a sudoku that most other newspaper providers manage to nail sporadically at best – and here I’m most disappointed to have to include The Times with its often clunky Puzzler Media supplied offerings.

Anyhow, this week’s puzzle is loosely based on a design that I saw the other day in the Guardian; I’ve added in the whole 1-9 theme, and removed a couple of clues to prevent total triviality. Scanraid is much better than me at grading sudoku, and it reckons it’s a 71 (gentle/easy grade). So there we are. Enjoy!

#116 Sudoku – rated easy

All puzzles © Tom Collyer 2009-11


Information

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.


How to play:
AkariFillominoHashiHeyawakeHitoriKakuroLITSMasyuNumberlinkNurikabeRipple EffectShikakuSlitherlinkSudokuSuraromuYajilin.

Tags

February 2011

Mo Tu We Th Fr Sa Su
Jan |  Today  | Mar
   1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28                  

Search

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

Copyright Statement

Puzzles published on this blog are licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License. Please leave a comment or send an email for more information.

Creative Commons License
Not signed in
Sign in

Powered by BlogBuilder
© MMXIX