Curling is a team sport with similarities to bowls and bocce, played on a rectangular sheet of carefully prepared ice by two teams of four players each. Teams alternate turns at sliding heavy, polished granite stones down the ice towards the target area called the house. Two sweepers with brooms accompany each rock and use timing equipment and their best judgement along with direction from their other teammates to help direct the stones to their resting place. The complex nature of stone placement and shot selection has led some to refer to curling as "chess on ice".
The game of curling is thought to have been invented in late medieval Scotland, with the first written reference to a contest using stones on ice coming from the records of Paisley Abbey, Renfrew, in February 1541. Two paintings (both dated 1565) by Pieter Bruegel the Elder depict Dutch peasants curling—Scotland and the Low Countries had strong trading and cultural links during this period, which is also evident in the history of golf.