You can only publish puzzles if you are logged in and if your user profile contains certain data.
In your own interest: make sure that the puzzle material that you intend to publish does not violate third parties' copyright. You are liable for any violations of rights you commit, and this can become very expensive very quickly.
Once all requirements are met you can start. Most puzzles require a puzzle diagram. You can upload image files to our server using the upload files page. If the upload is successful you will see a six-character image ID. The following file formats are recognised: PNG, JPEG, GIF, BMP, TIFF, XCF, PS, and EPS. If your puzzle diagram is available in a different format you have to convert it to one fo these formats first. Watch out: you can also upload PDF files for the contest engine, but you can't use PDF files in the puzzle portal!
When uploading an image file you can choose if your file should be 'private' or 'public'. 'public' files can be shared with other users, and these users can use your image file for their puzzles, too.
The page Publish puzzle is where you can start publishing. Choose a meaningful name for your puzzle: calling it Sudoku is potentially not very exciting - but if you really want to, that's OK, too.
Here you can also incude the images that you have uploaded before. Just enter <img:xxxxxx> and replace xxxxxx by the image ID that you saw after the successful upload.
Now you should provide a solution code and its description. Check the hints section below on how to come up with a good solution code. Solution codes may only contain letters, digits, and the following special characters: ! $ % & / ( ) = \ + - * # ~ < > |. All letters are automatically converted to upper case, and illegal characters are stripped from the solution code. (The same thing happens when solvers enter solution codes!)
You can use HTML for the solution code description, but it usually makes not much sense to do so. The page will only become more complicated.
There are separate edit boxes for the German and the English puzzle and solution code description. If you ask in the forum chances are good that you will find a volunteer who will translate your puzzle into German. If you create a puzzle in German or English only and leave the boxes for the other language empty users will see that version regardless of their language preference: you do not have to copy your puzzle text and solution code description into the edit boxes for the other language. If you provide both language versions users can switch between the English and the German version using the flag icon at the top.
Now choose a difficulty for your puzzle. This will serve as a hint for the first solvers what to expect. After five solvers have rated the puzzle difficulty the average of their ratings will be displayed instead of your initial difficulty rating.
You only have to fill in the next block if your puzzle should be published at a certain time (for example at midnight on April 1st). Enter the time here and choose Yes. Remember that the puzzle needs to be activated on the puzzle page before it will be published!
Finally you can set some tags for your puzzle. These tags will be displayed on the puzzle page, and they can be used in the advanced puzzle search. If you think a tag betrays too much about your puzzle don't hesitate to omit it!
If you have entered everything you can safely click on Create Puzzle. The puzzle still needs to be activated, therefore it won't be visible to other puzzlers yet.
Now go to the puzzle page and check what the puzzle looks like. If you are happy with what you see you can activate the puzzle by clicking Activate in the box at the right. You can also deactivate an active puzzle there in case you would like to edit it.
Thinking about the instructions from a solver's perspective is extremely important if you create a puzzle where the solvers have to figure out what needs to be done.
<div style="clear:both;text-align:center"> <img:xxxxxx> </div>
You can also look at how other people applied formatting by looking at the HTML source code of their puzzle pages. How to look at HTML page source code depends on your browser, but once you have it you can search for the string "HTML-Code des Raetsels: Anfang". That's where the puzzle content starts!
Asking for one or two rows of the puzzle grid is a popular approach. Or columns, of course... Just look at some similar puzzles and see what other puzzle authors have done.