All 9 entries tagged Slitherlink

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January 06, 2012

Friday Puzzles #138

So I think rather than me going on a Thomas S style 2012 theme-athon, the inspiration for this week rather comes from Palmer M’s excellent slitherlink puzzle pack. Still, I do manage to squeeze in quite a few 2012’s there, and I think there’s just about enough in the puzzle to keep things moderately interesting as you are solving. Maybe I’ll think of something for next week too – who knows? Not me, yet, haha. Enjoy!

#169 Slitherlink – rated medium

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All puzzles © Tom Collyer 2009-12


December 02, 2011

Friday Puzzles #133

So I’ve had a rather whirlwind week this week, including a trip down to BBC Television centre in London to offer my services as a sudoku “expert” (haha), as well as focussing some of my puzzling energies on a hopefully forthcoming UKPA project. Part of this is involving writing some easier style puzzles of more familiar type to try and encourage participation amongst those slightly more casual solvers.

Whilst I think it’s fantastic that some of the world’s best solvers maintain blogs with their own fiendish puzzling creations, I think sometimes its easy to overlook the beauty and elegance and simplicity of a really well made “easy” puzzle – and in particular the appeal these sorts of puzzles have for those who aren’t quite at the level of the MellowMelon’s of this world. The idea is that you don’t want things to be patronisingly easy, but you do want any sticking points to be resolved by the more casual solver after perhaps a few moments of careful thought. And of course you want a really pleasing design.

Something along the lines, hopefully, of this week’s puzzle. Enjoy!

#163 Slitherlink – rated easy

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All puzzles © Tom Collyer 2009-11


November 11, 2011

Friday Puzzles #130

And so, dearest reader, it matters not that that I’ve been away all week at both a world sudoku championship and a world puzzle championship performing quite well in the former and somewhat forgettably in the latter. Here is a Friday puzzle which is (just about) on time!

Yup, no puzzling updates, because frankly at this stage I’m not sure I want to write about how pear-shaped things have turned and I am sure that you probably don’t want to hear about my moanings just quite yet, so here is a slitherlink, plain and simple. Conceived on a long and boring coach trip, no less. Enjoy!

EDITED EDIT: this one works!

#160 Slitherlink – rated hard

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All puzzles © Tom Collyer 2009-11


August 05, 2011

Friday Puzzles #116

So thanks to everyone who gave feedback re the javascript akari – it’s clearly not quite ready for the big bad world, but hopefully firefox users at least managed to glimpse the potential there. Rest assured all comments and criticisms will be passed on!

And so most dearest of readers, on to this week. This puzzle started life almost as something of an exercise, but I think it’s turned out reasonably well, all things considered. Maybe that’s just the claret speaking though. I think there’s just about enough bite there to this to warrant the medium tag, although that too you might attribute to the good claret. Anyway, there are too many other things to be worrying about, alors, c’est tout. S’amuser!

#146 Slitherlink – rated medium

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All puzzles © Tom Collyer 2009-11


June 03, 2011

Friday Puzzles #107

And so we’re back up to date with this entry. Unfortunately I’m running very low on inspiration for blurb text, I’ll let this Slitherlink puzzle speak for itself. Enjoy!

#134 Slitherlink – rated easy

Ah what the hell, seeing as I’ve got this lying around anyway, and this is apparently the only thing I do on my blog, why not another twisted-symmetry Masyu? You’ll note I’m sure, that this (along with the vast majority of my other recent Masyu offerings) indeed has the full twisted symmetry. Enjoy!

#135 Masyu – rated easy

All puzzles © Tom Collyer 2009-11


January 28, 2011

Friday Puzzles #89

So I don’t really do many slitherlink, and I think undoubtedly I have a lot to learn about how you skilfully put together a really good coherent puzzle. This one probably counts as an easy, although it isn’t entirely trivial. Enjoy!

#115 Slitherlink – rated easy

All puzzles © Tom Collyer 2009-11


October 29, 2010

Friday Puzzles #76

So after the treat I served up last week, I’m afraid it’s time to come down to earth a bit this time around. This is one of those promised weeks where I’m serving up a puzzle featured in the recent LMI puzzle test I was responsible for. Albeit this one was fairly well received. I suppose that a possible ulterior motive for posting a slitherlink puzzles is that recently I have been in the habit of solving at Kwon-Tom Loop – which is curious as I don’t really enjoy the puzzles there that much. They are all taken from the generator and whilst all are certainly challenging, there is no elegance to them. On the other hand, I think that when you have a hard puzzle there should be a certain je ne sais pas to the solve that feels like getting a good bit of logic is being rewarded. Hopefully you get this here.

#096 Slitherlink – rated hard

Ah what the hell, why not have something original? I’ve been on something of a roll with my twisted symmetry masyu recently (it’s very therapeutic to design them) – and whilst it’s fair to say that most of them are fairly trivial to solve and I should really try making them in sizes larger than 10×10 – I am a bit pleased with this one as it’s by no means a trivial solve. So I don’t think that I could ever call a 10×10 masyu hard, but this at least isn’t totally easy. Enjoy!

#097 Masyu – rated medium

All puzzles © Tom Collyer 2009-10

Finally, I’d like to offer a hearty congratulations to all competitors at the 19th World Puzzle Championship in Warsaw, Poland. I wasn’t out there myself, but I have been following the progress of the British contingent via the UKPA forums with great interest. See also Thomas Snyder’s blog (over there on the left – I’m getting tired of linking everything).

Special congratulations should go to the nikoli.com solving behemoth, Hideaki Jo, of Japan, who finished third; to seven-times world champion Ulrich Voigt of Germany; and finally to the new world championship himself, Taro Arimatsu, also of Japan. You might surmise that the Japanese had an excellent time of it out in Poland, but they were ultimately pipped to the post by an excellent American team. Not only did they feature Mr. Snyder on the left there, but for the first time none other than Palmer Mebane – a.k.a. MellowMelon – whose blog you can also find there over on the left. So I suppose the final congratulations go to them.

Really finally, expect news of the immanent UKPA sudoku championship very soon!


July 16, 2010

Friday Puzzles #61

Another puzzle week busy making sudoku, and now also this slitherlink puzzle. Nothing too taxing, but hopefully enjoyable enough. Tested properly this time, too!

#075 Slitherlink – rated easy

All puzzles © Tom Collyer 2009-10


May 25, 2010

Friday puzzles #49

Funny how forgetting to make a puzzle until lunchtime brings out the urge to try new things. Of course, this Slitherlink puzzle is in no way a little bit silly. Just as the titling is by no means getting ridiculous. Oh well – I thought it might be more fun for regular readers to have one a day rather than a huge glut of them on a Friday.

Anyhow, ditto yesterday, this is the first time I’ve ever made a puzzle of this type, and ditto yesterday, if you don’t know the rules, then please check out the “how to play” section on the right. Enjoy!

#059 Slitherlink – rated easy

All puzzles © Tom Collyer 2009-10


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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.


How to play:
AkariFillominoHashiHeyawakeHitoriKakuroLITSMasyuNumberlinkNurikabeRipple EffectShikakuSlitherlinkSudokuSuraromuYajilin.

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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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