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Calendar Puzzle "Rhombus"

Calendar Puzzle "Rhombus"

6 comments

·October 12, 2025
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rawling

Have they made it so impossible dates are impossible, I wonder?

peterpuzzle

Creator here. No, you can arrange the puzzle pieces to make dates that don't exist, like Monday February 31. Actually there may be "impossible" dates, because I didn't check for them, but I guess all combinations of days of the week, day of the month and month are possible. And also many non-dates, like 1, 2, 3. But good point: alle possible dates have at least 1 solution. Disclaimer: I sell these puzzles for a little more than the raw material.

slig

So nice! Do you create them entirely algorithmically, or do you use the solver just to verify that every date is possible?

legedemon

Great puzzle. Do you ship internationally?

seanhunter

Looks like a really nice puzzle. Congrats.

xyzzy_plugh

Doesn't seem like it. Using the interactive board on the website I was able to produce a solution that only revealed numbers.