Einstein 2.0

From the homepage:

> Einstein puzzle is a free cross-platform open source remake of old DOS game Sherlock which was inspired by Albert Einstein's puzzle. Einstein said that only those with an intelligence quotient of 98 percentile and higher should be able to solve it.
> 
> The game goal is to open all cards in square of 6x6 cards. For this, a number of hints describing relations between card positions are given. Use them to find the correct layout.

The game is unmaintained since 2005, and the website has recently shut down. Ubuntu has a [package](https://apps.ubuntu.com/cat/applications/raring/einstein/) for it.