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).
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
- If you happen to have an old Windows system, you can try the good old
BSContact VRML player plugin offered by
Install the plugin; then, visit this
- A second best alternative is to use the
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.
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.