Tug of warsport that directly pits two teams against each other in a test of strength.
Two teams of eight, whose total mass must not exceed a maximum weight determined for the class, align themselves at the end of a rope (approximately 10 centimetres in circumference). The rope is marked with a "centre line" and two markings four metres either side of the centre line. The teams start with the rope's centre line directly above a line marked on the ground, and once the contest (the "pull") has commenced, attempt to pull the other team such that the marking on the rope closest to their opponent crosses the centre line, or the opponents commit a foul (such as a team member sitting or falling down).
There are tug of war clubs in many countries, and both men and women participate.
The sport was part of the Olympic Games until 1920, but has not been included since. The sport is contested in the World Games. The Tug of War International Federation (TWIF) organises World Championships for nation teams biannually, for both indoor and outdoor contests, and a similar competition for club teams.
The term is often used to describe an intense struggle between two sides.