All entries for Friday 29 January 2010

January 29, 2010

Friday Puzzles #29

Ok, so here’s part one of my mini-crusade to provide a more enjoyable alternative to those who can’t have a go at the UK WSC qualifiers. And indeed to those who have done or will do them. Puzzler have bastardised the name of diagonal sudoku, and instead call it “X-Factor”. In my opinion this sounds really quite stupid, but there we go, I’m not a marketeer.

This is the first time I’ve written a sudoku puzzle introducing the diagonal constraint. I think It turned out quite nicely, and should make a good warm-up for the coming harder diagonal puzzle.

Incidentally, the remaining puzzles for this initial section will be a harder diagonal, two classic sudoku puzzles, and a killer. Bearing in mind I think the Puzzler killer generator is actually quite good, I’m going to have my work cut out with that, but those are worries for another time. For now, enjoy!

#034 Diagonal Sudoku – rated medium

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.


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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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