Step 1: So, what's SQR?
If you take a look at the picture below, you'll see that the cells have different colours. Colour is crucial to SQR, since the SQRs need to be placed on a cell of their own colour to do anything other than move. There's a SQR, the painter, which turns cells to the player's colour(1). Black cells don't count: they could be removed from the board. As you see in the picture, each cell is a cube, a woodblock, with the faces painted in different colours. Therefore, changing the colour of a cell is simply done by lifting the cube, choosing the appropriate colour, and putting it back in place.
We - UCGames - are developing SQR as a free cell phone game, but some months ago we realized that it could also be played as a "physical" game. Since then we have developed two prototypes to try different board configurations and test gameplay -this is the second prototype. At present time it is one of a kind, so we'll show how we made it in case someone else wants to try building another :)
(1)for a full explanation of the rules, take a look here.