All entries for Friday 03 June 2011

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


Friday Puzzles #106

So this is the post to make up for an absence of anything last Friday. This might have been the Great Wall sudoku that I came up with on the coach to and from – you guessed it – the Great Wall, but it turns out that was broken and I want to give that a little more time to fix it to do things justice.

Instead, you’ll have to make do with one of my trademark slightly quirky Nurikabe puzzles. It’s generally plain sailing, but watch out for the odd moment. Enjoy!

#133 Nurikabe – rated medium

All puzzles © Tom Collyer 2009-11


Friday Puzzles #105

Firstly let me apologise for being absent the previous couple of Fridays. I have been out of the country on both occasions, the logistics being something terrible.

The first Friday was due to being in Beijing on Sudoku duty at the Beijing International Sudoku Tournament. Expect a full report later, but as something of a taster here are the final four puzzles as solved by Jan Mrozowski of Poland and Jakub Ondrousek of the Czech Republic. Jan was the runner up in the event, solving these 4 in a shade over 11 minutes – but Jakub took the crown with a total time of 10 minutes. Needless to say these are both breath taking performances, and whilst everything was broadcast to some Chinese sports channel, I’m not sure the viewers would have kept up – the commentary team of Chen Cen and Wei-Hwa Huang didn’t seem to…

BIST 2011 Final #1 – Sudoku

BIST 2011 Final #2 – Diagonal Sudoku

BIST 2011 Final #3 – Consecutive Sudoku

BIST 2011 Final #4 – Sudoku

[These were reconstructed from photos taken by Bastien Vial-Jaime – hopefully they are all good and typo-free but I haven’t actually had time to solve these myself to verify this is the case.]

With the quality of the puzzles being so high, I’m not sure that I am well advised in starting the first of my three legs of Friday Puzzles today with a sudoku, but there we go, it’s too late now. Enjoy!

#132 Sudoku – rated medium

Edit: Did anyone notice this was broken? I must have typoed a digit when transposing this over to inkscape!

All puzzles – except obviously the BIST puzzles – © Tom Collyer 2009-11


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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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