3D Glasses
In order to get this achievement follow these steps (starting in home page):
Mouseover Home menu -> click on Settings -> click on Board and Pieces
In the menu on the right, first option should be Pieces Style. Access the drop down list, scroll down and select one of the 3D options. Save and that's it!
You can just change it back afterwards, the default piece set is Classic.
Here is the link that takes you there directly.
