Monday, November 3, 2025

Genre Spotlight 65: Trixo (Puzzles 388 and 389)

Before beginning this post, a small update.  Currently, we're on entry 65 -- it's been a long ride!  However, all good things must eventually come to an end.  I always planned for this series to last only a year or so, and it'd be good to end on a nice, round number.  The last entry of the Spotlight series will be Entry 70.  (This means that the last post will be in mid-December.)

Today's genre is Trixo!  This type was invented earlier this year by PuzSQ/Discord user xetto.  It's an interesting type!  Feels Inaba-like, in a way.  (Though I said that about Corner Disorder last week.  Shrug.)

Rules: Place some shaded trominoes onto the grid to form a single diagonally connected network.  All clued cells are shaded.  Cells marked with a "╳" must touch another tromino diagonally.  Cells marked with a "◯" must not.

          

The first puzzle today is antisymmetric. I'm surprised at how it just works.

Puzzle 388 (Penpa)

 

The second puzzle was a pain to construct.  I had 90% of the puzzle done for a long time, but the final 10% refused to die (uniqueness issues!).  I ended up taking the puzzle in a slightly different direction as a result; some logical steps from previous iterations didn't quite survive, but that's what happens during construction!

Puzzle 389 (Penpa)

 

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