All entries for Friday 29 October 2010

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!


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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 Thomas Collyer 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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