Yellow Mountain Imports Shin Kaya 2.4 Inch Go Floor Board Goban Shin kaya wood; 2.4 inch (6 centimeter) thick shin kaya solid wood floor board (goban); because of the nature of wood, the grain will be similar but not identical to the images you see in this product listing; playing go on a quality wood floor board conn Japanese standard size; this board is Japanese standard size meaning the grids are 21.5 x 23 millimeters, and the board's dimensions are 18.1 x 16.9 x 2.4 inches (46 x 43 x 6 centimeters); the playing field is 19x19 Instructions included; a clear and concise booklet, "The Way to Go" by Karl Baker, is included with the purchase of this board; this booklet explains the fundamental rules and strategies of the classic game of go Stones sold separately; stones are not included; please see our other listings for go stones 30 day return policy; here, at Yellow Mountain Imports, we want you to be satisfied with your purchase; you are backed by our 30 day no questions asked money back guarantee so you can buy with confidence