Professor Truebridge waited for the Ravenclaw and Slytherin players to enter the Gobstones court. He handed them their gobstone bags, green for Slytherin, blue for Ravenclaw, each containing the appropriately coloured gobstones and he levitated the grey jackstone into position in the centre of the court.

"I expect that before we begin you will have all made yourself familiar with the rules. There will be no tolerance for cheating and only one warning will be issued for playing out of turn. Lets begin."