SongYun Go Game Board Reversible 19 x 19/13×13 Roll-up 18.9 x 18 x 0.1 inches por | jul 31, 2026Professional Go Manufacturer: SongYun was founded in 1985 and has been focusing on Go production for nearly 40 years. We hold multiple patents for producing Go pieces. Reversible Go Board: 19×19 playing field on one side and 13×13 on the other side.