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Calendar Puzzle "Rhombus"
- rawling 1y agoHave they made it so impossible dates are impossible, I wonder?
- xyzzy_plugh 1y agoDoesn't seem like it. Using the interactive board on the website I was able to produce a solution that only revealed numbers.
- peterpuzzle 1y agoCreator 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.
- seanhunter 1y agoLooks like a really nice puzzle. Congrats.
- legedemon 1y agoGreat puzzle. Do you ship internationally?
- yapyap 1y agonot OP but yes
- slig 1y agoSo nice! Do you create them entirely algorithmically, or do you use the solver just to verify that every date is possible?
- peterpuzzle 1y agoI wrote 2 solvers in Python. One that loops through all possible dates and searches for a solution. And one that loops through all solutions and checks if they form a date or not. And luckily both gave the same answers.
- drivebyhooting 1y agoHow did you select the piece shapes to ensure there was always a solution?
- peterpuzzle 1y agoActually I tried a lot of different combinations of piece shapes to find the "hardest" set of pieces that can still solve all possible dates. "Hard" is subjective, but I mean pieces with multiple protrusions.
- zvr 1y agoI have the "A Puzzle A Day" https://www.dragonfjord.com/product/a-puzzle-a-day/ https://www.dragonfjord.com/product/a-puzzle-a-day/ since a few years and I have thoroughly enjoyed it. All dates are possible and most (all?) have multiple solutions.
- spencerflem 1y agoWas just about to link to this one!
- peterpuzzle 1y agoCreator here. That puzzle started my search into this type of puzzle. But in the end my puzzle is harder, because it also contains the day of the week and has the most "irregular" puzzle pieces possible.
- Y_Y 1y agoThose particular rhombuses are typically known as "squares"
- dfee 1y agoI thought the same thing, but it seems that certain dates would make it so there is one square ("rhombus") and one (non-square) rectangle (e.g. Feb 15). So rather than 3 rhombuses – or 3 squares – perhaps it's 3 squares of 1 square and 1 rectangle. (Perhaps the positions of the puzzle pieces make it such that it truly is 3 squares)!
- RyanOD 1y agoAnnouncing new Diamond Shreddies! https://www.youtube.com/watch?v=bccNH82DIo0 https://www.youtube.com/watch?v=bccNH82DIo0 https://www.youtube.com/watch?v=hF_2yHXD_CU https://www.youtube.com/watch?v=hF_2yHXD_CU (and...neat puzzle...nice job, creator!)
- peterpuzzle 1y agoCreator here. I know, I know, the "rhombuses" are just rotated "squares", but I already had a calendar puzzle "Square", so that's why.
- ky_vulnerable 1y agoThat's really creative. Did the creator come up with the design himself?
- peterpuzzle 1y agoCreator here. Yes I did. Used some existing puzzles as inspiration. See https://praxispuzzles.com/calendar_puzzle_square https://praxispuzzles.com/calendar_puzzle_square
- seszett 1y agoNice, but it's only available in English sadly, there's a link that says "see kalenderpuzzel "Ruit" for the Dutch version" (I'd prefer French but Dutch would do as well) but that page says "De maanden en dagen van de week zijn in het Engels". The "square" one is in Dutch but sold out and the Rotterdam one in English only. But I like that idea, apparently it's not the first puzzle of this kind but I didn't know about them.
- peterpuzzle 1y agoCreator here. If there is enough demand I can make a French version. Ordering a new batch of lasercut wood cost me $20, so I have a minimum batch size of 20.
- nonethewiser 1y agoSeems pretty hard! Even the easy example.
- peterpuzzle 1y agoCreator here. I sometimes advise people not to focus on today's date, but a date in the following week. Then you have more time to find a solution!
- racl101 1y agoOoh, nice white elephant gift idea for work. I never know what to give.