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Classics Collection

Classics Collection: Regional Polyominoes

Hi there,
this is the fourth puzzle group in our Classics Collection series. The puzzle type is Regional Polyominoes (Tetrominoes/Pentominoes, to be precise), and it is the first group designed by a guest author. In this case, the guest author is my brother Ulrich (uvo). Here is the PDF file: Regional Polyominoes

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Contest Strategy

Among the few puzzle competitions I am taking part in these days are the online contests of this year’s Puzzle Grand Prix. Given the state the world is currently in, puzzle-solving is certainly not the worst diversion one can think of, and the GP rounds are decent contests. Today’s post is about my strategic approach for this event.

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Angler Topologies

Two weeks into the Nurikabe series I posted an article titled “Nurikabe Geometries”, where I discussed the structure of puzzle grids and how Nurikabe would look like on different grid types. That article included a small set of puzzles featuring substantially different grids. The current post is of pretty much the same kind, but Angler-related. (A PDF file with four Angler puzzles – not exactly the kind suitable for beginners – can be found below.)

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Screen vs. Paper

This is pretty much a straightforward question. Given an online contest where the puzzles are supposed to be solved on paper, should the participants be allowed to solve the puzzles on screen instead?