Modular Magnetic Go Board

This is my take on the worlds oldest continuously played board game Go. Dating back over 2000 years.
http://en.wikipedia.org/wiki/Go_game

This started out as a way to make a Go board that could be played in a moving vehicle, but it quickly morphed into what you see today. This modular set of Go board pieces can be used to create any n*n size Go board you want as well as arbitrary shapes. If really adds a new dimension to playing Go when you have obstacles or other shapes.

Each piece contains a 5 mm magnetic ball and is free to rotate inside the piece to create a perfect alignment with the center of the grid. I would imagine this board would be useful for people that lack the fine motor skills to accuracy place pieces on a standard Go board.

Video demonstration of board and pieces
http://www.youtube.com/watch?v=NZMIMVO_rrA