Every message about this site goes to one mailbox, read by the person who makes it: support@murdokuonline.org. There is no contact form and no ticket number, because there is no support department behind it — just write, and you will get a reply from a human being. Most messages are answered within a few days; anything about privacy or your data is answered within thirty days at the outside, as our privacy policy commits to.
This is the most useful mail we get. If you are convinced a case has two valid answers, no answer at all, or a clue that contradicts the board, please say which case it is — the title, or the address of the page you were on — and what you worked out. Every case is machine-verified before publication, so a genuine contradiction points at a bug in the checker rather than a slip in one puzzle, which makes it worth chasing properly.
Tell us the page address, the browser and device you were using, and what happened against what you expected. If the board failed to draw, or a saved case vanished, or the site misbehaved after an update, that detail is what makes it reproducible. Screenshots help and are welcome.
The site is written in six languages and none of them is machine-translated, which means the mistakes in them are human ones. If a clue reads awkwardly, a case title falls flat, or a term of art is wrong in your language, we would genuinely like to know. Quote the sentence and suggest a better one if you have it.
The editor lets you export a case as a file. If you have made one you are proud of, send the export and say a little about what you were going for. Submissions are read and played; anything published is credited to you by whatever name you ask for, and nothing is published without your say-so. We cannot promise to use every case — a case has to pass the same uniqueness and forward-solvability checks as any other, and most drafts need a round of edits first.
Requests to access or delete data, questions about the advertising on the site, and rights requests under the GDPR or US state privacy laws all go to the same address. So do copyright and trademark concerns: if you believe something here infringes your rights, write with the specifics and we will look at it promptly. Please put the word “privacy” or “legal” in the subject line so it is not lost among the puzzle mail.
Happy to answer questions for an article, a video or a classroom. Teachers and puzzle clubs are welcome to print the sheets and use them with a group at no cost and without asking, which is largely why the printable sheets exist. Anything commercial needs a conversation first.
Requests for a setting we have not built yet are welcome and are read as a queue rather than a promise. Fourteen settings exist so far — the manor, the grand hotel, the precinct, the ski lodge and the rest — and each new one means a floor-plan vocabulary, a cast of objects to hide behind and a set of room names that have to work in six languages. Tell us the setting and, if you have one, the murder you imagine happening in it.
Mail is read by one person and kept only as long as it takes to deal with it. We do not add you to anything: there is no newsletter, no mailing list and no account created off the back of a message, and your address is never passed to a third party or used for advertising. If you send a case file, it is played and then either kept with your permission or deleted. If you would rather write pseudonymously, that is completely fine — nothing we do with a bug report needs your real name.
We cannot give you the answer to a case you are stuck on. The in-game hint system is there for that, and it reveals the next justified step rather than the solution, which is the kinder way round. We also have no account to reset, no subscription to cancel and no payment to refund — the site has none of those things, so a mail asking about one is almost certainly meant for a different site.
If your question is about the rules, how to play Murdoku answers most of them in full and the interactive tutorial teaches the rest on a real board. If it is about who runs this site and how the cases are made, the about page covers it.