I agree that getting the solution can ruin the fun of the game, but sometimes you've been stuck for a long time and it can get frustrating. It would be nice to have something in between getting the full solution and nothing at all.

I propose a second button, called "Hint", which places the solution pieces one by one. That way I can maybe get a single piece hint, then try solving the rest myself.

Code wise, I see you get the pieces in numbered form. Each press of the button would just go through the list and render the next number. Although that means the first hint will always be the same piece. Maybe it would be nicer to instead have a shuffled list of numbers and use that to get a random order every time.

Hello! We love your A-Puzzle-A-Day solver! We are the inventors of A-Puzzle-A-Day, and very happy you have put a link to our DragonFjord page (www.dragonfjord.com).

We have several international patents on the design: WIPO DM/215118; EUIPO 007690433, which has helped slow the flood of copycat designs filling the market. We see you have put a link to one of these copiers alongside the link to our original, and wonder if you could remove this link? This is company that is knowingly copying our original design with no credit and claiming it is their own.

Thank you!

Keiichi, the puzzle calendar you called "one with tetromino pieces" is my design. https://imgur.com/a/tsEAO7Q Thanks!

Related to #3 :

https://puzzleparadise.net/listing/puzzle-calendar-solve-for-each-day-of-the-year-cherry-pieces-and-walnut-border/107535

Maybe if I have some free time I'll take a look at this.

I notice you always prefill the calendar solver with today's date and the dragon calendar. would it be possible to make an endpoint to choose which values to prefill on the url? that way I would for example be able to always land on today's weekday puzzle?
This would also allow for an easy addition to create a next/previous day button on the site.
Would you be open to me adapting the code to do this if you don't have the time?

A new type of puzzle a day has shown up that includes the day of the week. It uses all 9 of the previously defined pentominoes with the addition of the line tetromino. It continues the grid past day 31 to include the 7 weekdays but puts the last three on the bottom right instead of wrapping around.

I can't find information on the original creator, but it has appeared on a plethora of different websites.

The additional piece should be easy to add, but the new board type and third target would take a bit of code re-work I believe.

--Hi,

your tool is a fascinating job and i want to know how you find all the soluces ?
Which is the mathematical method ?

thank you --