Glenn Murray hit a superb hat-trick as second-placed Brighton opened a gap on the chasing pack with a 5-0 demolition of Norwich.
Lewis Dunk and Anthony Knockaert scored the other goals as the home side netted four times in the last 30 minutes before a season's best crowd of 29,469 at the Amex Stadium, earning a seventh league win in nine games.
Murray, on a season-long loan from Bournemouth, now boasts nine goals this term, all of them at the Amex.
Not only was this Brighton's biggest win of the season, they are also unbeaten in nine games and have kept clean sheets in seven of those matches.