Corus
The Tata Steel Chess Tournament is an annual chess tournament held in January in Wijk aan Zee, the Netherlands. It was called the Hoogovens tournament from its creation in 1938 until the sponsor Koninklijke Hoogovens merged with British Steel to form the Corus Group in 1999, after which the tournament was called the Corus chess tournament. Corus Group became Tata Steel Europe in 2007. Despite the name changes, the series is numbered sequentially from its Hoogovens beginnings; for example, the 2011 event was referred to as the 73rd Tata Steel Chess Tournament.