What defensive strategy in hockey involves a team clogging the neutral zone to prevent the opposing team from entering their offensive zone?

The neutral zone trap became infamous in the mid-1990s when the New Jersey Devils used it to win the 1995 Stanley Cup, frustrating opponents and critics alike with its effectiveness. This defensive hockey (Deals) system positions forwards deep in the neutral zone to force turnovers and create counterattacking opportunities. While effective, the trap was so unpopular with fans that the NHL eventually changed rules, including eliminating the two-line pass, to encourage more open and offensive play.