Peterborough United winger George Boyd says Saturday's 6-0 win over Carlisle has put further pressure on their promotion rivals.The win took Posh to third in League One and means they have taken 19 points from the last 21 available. [LNB]Boyd told BBC Radio Cambridgeshire: "We just keep winning every game, I think that's six in seven now. [LNB]"The other teams must be thinking 'Peterborough have won again', and it demoralises them a bit." [LNB]Boyd scored twice in Saturday's win at London Road, but missed out on a hat-trick after missing a late penalty. [LNB][LNB] If we get a clean sheet then we're going to win games Peterborough United winger George Boyd "I've just got to keep scoring, I think it's 13 now and I only got 11 last time in League One," he added. [LNB]"Mackail-Smith is always going to score, Tommo [Lee Tomlin] is going to get a few more so we've got goals from everywhere in the team." [LNB]In recent games Posh have combined their free-scoring form with a solid defence, conceding just two goals in seven games. [LNB]Boyd said: "The back four and Joe [Lewis] have been brilliant in the last few games. [LNB]"It's been the way all season, if we get a clean sheet then we're going to win games with the firepower we've got."[LNB] [LNB][LNB] Peterborough go to Sheffield Wednesday on Tuesday, where a win will take them to second if Huddersfield fail to win at Brentford. [LNB]Boyd said their match at Hillsborough was one of the highlights of Posh's ill-fated year in the Championship last season. [LNB]"It was amazing, they have 25,000 season ticket holders," he said. [LNB]"They're not on the best run but they'll be up for it."