The board is a hexagonal field representing the Sumo arena.
There are 4 interlaced different size hexagons, where the most exterior hexagon has 5 circular locations at each side. In the middle there is a single location. As a total, there are 61 circular board locations.
Each player has fourteen pieces that can rest in these locations. In initial game position Green pieces are at the top three rows, and Red is at bottom three rows.