Tag Archives: puzzle set

Puzzle set: Classic Sudokus, 2017 East Asia Sudoku Championship

Last Sunday, South Korea hosted the Asian Sudoku Championship in Seoul, which included a set of classic Sudokus that I wrote.

These originally came out of practicing my Sudoku construction skills by writing a puzzle a day for a long week early last year. It’s still a hit-or-miss process for me, but I think there were some nice ones. Solve on PZV (a b c d e f g h i) or find the set below.

In other news, don’t forget to take part in Puzzle Ramayan at LMI this weekend: A set of easyish classics and region puzzles that I prepared, including some instructionless variants.

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Puzzle set: 24 Hour Puzzle Marathon, 2016 edition

Took me a bit longer this year, but here’s my set for the 24 hours from April. I took a bit of a different approach this year, with four puzzles each of six more or less standard puzzle types. My hope was to make the round a bit more approachable than in previous years, though this may have been taking it a bit far. But I think the round worked out fine in the contest.

Individual puzzles below, or get the whole set in PDF: 2016-24h-rob-puzzles.

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Puzzle set: Polish qualifiers 2016

I made a couple of puzzles for the Polish qualifiers back in February. I previously posted two more puzzles which didn’t make it: Angle Loop, Doubleback.

One Minesweeper puzzle (with an unknown number of mines). The kind of puzzle that just feels too trivial when constructing, although in the end I think it’s quite ok.


One Pentominous, with the obvious PL theme.


Finally a small an tricky Checkered Fillomino.