Sunday, January 26, 2025

Puzzles #735 - #737 - We Are So Back (Double Back Variants)

Continuing my backlog posting of old puzzles I haven't shared, here are the three puzzles I made for Logic Showcase 66. The prompt was to make a puzzle with a Double Back rule, and I took that prompt in three different directions.

The first puzzle I made was a Norinori where the unshaded cells had to be solved as a Double Back. In other words, draw a loop passing through all but 2 cells in every region, that enters and exits every region exactly twice. Cells unused by the loop should be shaded, and each shaded cell should have exactly 1 shaded neighbor. I had a lot of trouble finessing some parts of this to be unique near the end, which was a bit annoying given how nicely the start worked out.

The second puzzle I made was an Aquapelago where each region has to have exactly two unshaded components. Originally I dabbled with a fully clueless grid for this but decided a few clues would be an important addition. The first version of this puzzle was also broken, unfortunately, but I was able to fix it.

Finally, I knew I wanted to make a proper loop puzzle - not just a Yajilin-style mashup. So I combined Double Back with All or Nothing - solve as an All or Nothing where every region is visited either 0 or 2 times.

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