The Public option (default) makes your puzzle become visible to everyone through the Solve page of Puzzel.org.

The Private option makes sure that the puzzle is shown in your account puzzle list only and can then be shared with others by sharing the direct link, or by embedding the puzzle in your website.

This option (disabled by default) lets you enable some helpful buttons when embedding your puzzle in your own website

Buttons vary per puzzle type, but most common are 'Reset answers', 'Print' and 'Save as image'.

When enabling the premium Register-option it will also show a Logout-option

Tracking stats could come in very handy as a Teacher or a Marketeer. This enables you to personify results in combination with the 'Force registration'.

It tracks results like correct answers given, total players, time taken and supports a Export to Excel.

The primary color of your puzzle, often used for highlights of some sort and within the message shown on completion (if you enabled it).

The secondary color is often used for contest squares, buttons and to some degree within the message shown on completion (if enabled).

The color used when answer control is enabled to highlight a correctly given answer.

The font family used for the textual parts of the puzzle, like questions and cells.

The background image of the puzzle. Sets a nice and unique stage for your puzzle if chosen correctly. Make sure everything stays readable!

This message shows when a puzzle player solves/completes your puzzle.

It can be customized in a lot of ways, shown in the options below when activated. Asking for the contact info of puzzle players is also a interesting twist that can be added for competitions and other ideas.