Logic Masters Forum - Rätselportal

Spam

Wed, 15 Oct 2025 15:39:01 +0000

Ich denke, anne34 und tobi22 ist ein Spammer.

sudokusphere.com

Sat, 19 Jul 2025 19:35:55 +0000

Hi everyone,

Over the past few months, we – the sudokusphere team – have been working together on a new Sudoku website. We were inspired by platforms like SudokuPad, but felt there was still a lot of room for improvement — especially when it comes to design and missing features like a searchable puzzle list. So we decided to build our own site from the ground up.

The site is now nearly finished, and we’d really love to hear your feedback. Here are the main features we’ve implemented so far:

Sudoku builder with over 25 rule types: You can create puzzles with a wide range of variants — including Anti-Chess, Arrow, Chevron, Clone, Diagonal, Killer, and many more. Our goal is to make the builder as flexible as possible so that both classic and highly customized logic puzzles are possible.
Puzzle analysis tools: You can check how many solutions a puzzle has and, if there are multiple, see which digits are possible in each cell. We’re currently working on a tool that explains solving techniques step by step — great for learning or teaching.
Publish your own puzzles: Once you create an account, you can name and publish your own Sudokus and share them with the community.
Seamless solving experience: Whether you’re building or playing, you can pause and resume at any time. Your progress is saved automatically — either to your account if you’re logged in, or locally in your browser (without using cookies).
Points and leaderboards: You earn points for every puzzle you solve — based on difficulty (measured by average solve time) and other factors. All points count toward a global leaderboard.
Searchable puzzle archive: Browse and filter all published puzzles by type, difficulty, estimated solve time, and more — making it easy to find the kinds of puzzles you enjoy most.
Puzzle rating system: After solving a puzzle, you can rate it. Over time, this helps create a good overview of which puzzles others have enjoyed.
Responsive design: The site is optimized for desktop and iPad use but also runs surprisingly well on mobile.

We’re super curious to hear what you think — about the solving experience, the interface, possible new features, or anything else that catches your eye. Of course, there are still some bugs and unfinished features (yes, a few buttons don’t do anything yet), but we’re constantly working on improvements.

Here are a few issues we’re already aware of:

You can load a puzzle you’re currently solving into the builder and get the solution that way.
You can solve your own puzzles and get points for them.
Some languages are not fully translated yet.
Some buttons aren’t properly linked or explained in the “How to Play” section.
It hasn’t been tested what happens when you create a puzzle and then delete your account — this might currently cause problems.

Here’s the link to the site:
? https://sudokusphere.com

Thanks so much for checking it out!
We’re looking forward to your feedback.

Marc from the sudokusphere.com team

Userscript with various enhancements

Tue, 18 Feb 2025 21:58:17 +0000

I made a userscript that improves the website in various ways. Feature overview:

The solution code is automatically generated and submitted when you solve a puzzle. (With some caveats: The instructions must be relatively simple, like "row X" or "first column". Some URL shorteners break this feature. And finally, it currently only works with SudokuPad.)
If you have the puzzle portal open in a background tab when you solve a puzzle, the puzzle icon immediately changes from "unsolved" to "solved".
URLs in comments (of a puzzle) are turned into clickable hyperlinks.
Pressing Ctrl+C while an entire row/column is selected will copy the digits to your clipboard. (SudokuPad only.)

To use this script, make sure you have a browser extension like TamperMonkey and then install the script by clicking this link.

please look out for potential risk

Fri, 15 Nov 2024 12:50:26 +0000

guy, mods, i know you gave up on sudoku tag, but you might want to add a few things on the setters page when they post a puzzle. mainly to avoid getting into trouble from legal problem
yes, I'm talking about posting puzzles to get money or fund. i just happened to click on a Sudoku page today and notice it's advertising for a Sudoku-con that's not WSPC and not happened yet. i study finance so hear me out. if you gather money for a thing that's not happened yet, it's banking from people's trust. and the trust is not only from the fundraiser but also the platfrom it's on. which means, if this con doesn't happen or something goes wrong, you will also be hold accountable. this means, you guys might be going to deal with legal issue from other country like illegal fundraising.
what I'm asking you guys to do is not check every puzzle for this stuff(i don't think you have enough manpower for this), I'm asking to be at least put some warning in the puzzle posting page to free you from potential risk. i do not have a good feeling about this when i see a 100% rating puzzle have fundraising content. i don't know how often does this happened. but every setter and solver should know that this is not a platfrom for advertisement. do not share your puzzle hoping to get a profit.
also, I'm doing this for myself. you might notice this site is accessible to China. one of the reason is that there's no money business involved. i don't want to be not accessible to this site. just let setter know don't do potentially illegal stuff, either in copyright or finance

Startseite / Aktuelle Termine / Seite kann nicht geöffnet werden

Mon, 04 Nov 2024 21:36:07 +0000

Hallo zusammen,

bei mir funktionieren auf der Startseite unter Aktuelle Termine nur die ersten 3 Einträge.

Bei den letzten 3 Einträgen kommt folgende Meldung: Safari kann die Seite nicht öffnen. Fehler: URL kann nicht angezeigt werden.

Ist das ein allgemeiner Fehler oder nur auf meinem iPad in Kombination mit Safari?

Daniel

PDF-Vorlagen für Wettbewerb

Sun, 03 Nov 2024 10:36:24 +0000

Hallo zusammen,

ich würde gerne einen Rätselwettbewerb mit Anleitung, Rätseln und Lösungen erstellen. Gibt es dafür in unserem Verein Vorlagen, bei denen man Texte und Rätseldateien bzw Rätseldaten einsetzen und entsprechende PDFs generieren lassen kann?

Viele Grüße
Sebastian

Continuing of SVS - help asked for a list of fresh variants

Sun, 27 Oct 2024 04:26:51 +0000

Hi all,

I am still alive!
In the last (almost) two years, I have been busy with a lot of other things in life, beside puzzling. I have written piles of puzzles for our National Sudoku Championships and for the website of WCPN, but since you all know, SVS was on hold. For longer than I intended.

Two weeks ago I participated in WSPC in Beijing in the Dutch B-team and for that occasion I prepared a few practise sudokus for the team for some new (to me) variants.

In the months before Beijing I was busy with the Dutch championships 2025 and now I am in a writing flow. It's time to pick up SVS again...

The portal of LMD has been a great source of inspiration, so that was the place I started searching for new variants, but I encountered an immediate problem: a vast amount of puzzles is published every day, but the majority of those puzzles are hybrids. For SVS I am looking for 'Single rule'-sudokus. That seems to be a search for a needle in a haystack.

So here is a shout-out for help: Can you provide me the links to new Single-rule sudokus that are published here in the portal in the past two years? Otherwise searching for these myself will consume costly time that I prefer to spend in writing new puzzles.

Thanks in advance!
Best regards, Richard

Can't log into the main site

Fri, 02 Aug 2024 18:33:06 +0000

I hope I'm posting this in the right place, Chrome is refusing to translate.

I just made an account but it won't let me use it on the main site. I tried making an account (with this username) on the main site before I made one here, but it doesn't seem to have worked and I didn't see an error message.

Puzzles with publicly available solutions

Mon, 29 Jul 2024 15:16:09 +0000

I made the following observation (only a gut feeling, nothing is provable):
If there are two comparable puzzles with comparable difficulty but the first one has a publicly available solution, the second doesn't, the first one will get higher solver numbers. By publicly available I mean youtube videos or digital versions of the puzzle which allow for solution checking even after the first digit is entered.
Would it be a good idea to lable those puzzles to make solver numbers better comparable?

Rätselportal - Eigene Liste

Tue, 16 Jul 2024 21:16:55 +0000

Hallo zusammen,

ich wollte in einer Liste von Autoren noch einen Namen hinzufügen,
Statt dessen wurden alle anderen gelöscht.

"Die Änderungen (Liste 2 bearbeitet) wurden übernommen. 31 fehlerhafte Einträge entfernt."

Dann noch mal klein angefangen.

Einene Namen "CHalb" -> OK
oder "CJK" -> OK

zwei Namen "CHalb, CJK" -> Beide gelöscht.
Dito bei "CHalb, CJK, "

Browser: Firefox und Edge probiert.

Was mach ich falsch?

Gruß Andreas

Serverarbeiten / server migration 21.05.2024

Sun, 19 May 2024 20:13:06 +0000

Hallo zusammen, eine kurze Vorabankündigung:
In der Nacht vom 20.05. auf den 21.05.2024 wird die Seite für bis zu 3 Stunden wegen Serverumzugs nicht erreichbar sein. Das Zeitfenster liegt zwischen 02:00 und 06:00 morgens.

Hi everyone, just a minor heads-up:
The site is moving to a different server and will be inaccessible in the early hours of May 21st. (roughly between 02:00 am to 06:00 am)

Denksel

Tue, 09 Jan 2024 15:29:25 +0000

Hallo,
ich bin neu hier.
Vor vielen Jahren bin ich auf das Denksel gekommen und war superbegeistert. und dann..... eins habe ich runtergeladen, und dann wars vorbei. Bernhard hat es eingestellt. Leider bietet er es nicht mehr an - auch alte verschickt er nicht mehr. Riesenschnüff. Immer wieder guck ich im Internet. Jetzt bin ich über Suchmaschine bei euch gelandet. Hat von euch jemand eine Digitalversion???? Oder habt ihr einen Tipp für mich, wo ich alternative Rätsel ala Denksel finde?
Ich würde mich soooo freuen.
Mokika

Links zu git.io funktionieren nicht mehr

Thu, 07 Sep 2023 21:08:32 +0000

Alle Links zu Online-Tools, die mittels git.io abgekürzt wurden, funktionieren nicht mehr. Wie eine kurze Suche zeigt, betrifft dies über 1000 Rätsel. Siehe dazu auch dieser Blogbeitrag:

https://github.blog/changelog/2022-04-25...precation/

Tips for new puzzle setter

Wed, 23 Aug 2023 08:04:14 +0000

Hello,

I am a rather new 'rookie' puzzle setter. I have created 5-6 puzzles which are posted on Logic Masters. Of these puzzles, the first two received enough ratings to display the difficulty and popularity. All other puzzles I have created were barely solved and received not enough ratings (<10). The comments show that those who did try and solve puzzles, did enjoy them a lot (mostly the last two puzzles). I am looking for some help into what is causing people not to try the puzzles.

I am unsure if it is the ruleset, unclear rules, the look and feel of the puzzle, or the difficulty. Any help towards what may be causing it is much appreciated. Because they did not receive enough ratings, I cannot see how difficult people think the puzzle was or how much the popularity rating is.

can we have a rules writing guide book

Tue, 20 Jun 2023 09:35:51 +0000

Hello. everyone. i want to draw some attention to the rules writing issue.
It's a problem i noticed a long time ago. Many setters use the line 'Standard/Normal Sudoku rules apply' without a follow up of a detailed rules. I even remembered a puzzle did not list the complete ruleset he use. There are also some minor problem with the rules writing, like using 'negative restraint' in rules writing instead of 'All possible xxx are given', or the rules don't have paragraphs which makes it unnecessarily tiring to find a certain rule.
In the past, i thought it's a time issue that can be solved with time. But today, i found i have trouble understanding rules. i had to guess the rules by the example. the sorce of my misunderstanding is that the setter repeat a noun in many lines, causing me to think those lines of rules are connected. It's very clear many setters still don't know how to write their rules more effectively.
In the 'How to publish puzzles' section, it is clear to avoid only using simplied version phase and check puzzle wiki. but i can't access the puzzle wiki English version page. And i didn't find how to write a new rule from 0 in wiki
To conclude, i think a rules writing guide book is necessary. It can help setters to write the rules like a pro, and may be some crtl C+V when too tired to write the detailed rule. As for what i expected to see in a guide book, it should contain example rules of every label/tag, how to paragraph a complex rule set, the usage of symbols(like ? in outside clues only have one direction while arrows can have three) and colors(what color should be used to be more accessible for colorblind, may be some sample color), and maybe some example of rules with many tags to illustrate the layers in writing the rules.
by the way, could there be a tag or label for all those fog of war puzzles? i want to exclude those from my search list. it's very frustrating clicking a puzzle only to find i'm physically impossible to solve those.