To provide a play instrument with which a game can be played while through the use of pieces such as tees for golf.

Plural piece holding parts 14 are provided on a play board 11, and pieces attachable to and detachable from these piece holding parts 14 are provided. In the piece holding part 14, virtual triangles S are temporarily provided on the play board 11, and virtual straight lines T1-T3 are temporarily and parallelly provided at equal intervals on virtual sides S1-S3 consisting of that virtual triangle S. The piece holding parts 14 are respectively arranged at apexes K1 of the virtual triangle S, intersections K2 of virtual sides S1-S3 and virtual straight lines T1-T3 and mutual intersections K3 of virtual straight lines T1-T3.