Applications

Puzzles

The "Oskar" puzzle simulation is encoded in the VRML language. However, nowadays only Internet Explorer has plugins that support the entire set of the VRML language (as far as I know).

If you happen to have an old Windows system, you can try the good old BSContact VRML player plugin offered by Bitmanagement. Install the plugin; then, visit this Oskar-for-BSContact page.
A second best alternative is to use the Cortona3D plugin. It works only on Internet Exporer and you need to follow one extra step (downloading and uploading a file). Visit the Oskar-for-Cortona3D page. Then, enter a sequence and press the button. You will be prompted to save a file in the VRML language that encodes the animation; save it; once saved, double click it to upload it to Internet Explorer.

Once the animation is uploaded, click on the bulb to start the animation. If your sequence is correct, the bulb will light up at the end of the animation.

The "Gordian's Knot" puzzle - viewing the puzzle in 3D requires a dedicated application that is able to parse an extended VRML format and view the 3D model while interacting with the user. Visit the the knot page for more detailts.