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Middlesbrough and Brighton both won to gain ground on Burnley on Tuesday night, even though Sean Dyche's side extended their unbeaten streak to 17 league games.
Bluebirds goalkeeper David Marshall made two fine saves from Sam Vokes and Ashley Barnes in stoppage time but the visitors could have won the game themselves moments earlier when Kenneth Zohore hit the crossbar.
Although Boro, who have a game in hand, are now only one point behind and Brighton are two back, Dyche was quick to highlight how his men have turned things around since Christmas despite three successive draws.
"I have to look at the whole season, if you add those three draws into those six wins on the trot, you wouldn't bat an eyelid," Dyche said.
"That's the reality of it. From Boxing Day we've come from eight, nine points behind the top boys who had a game in hand as well. We're top of the league so there's been a lot of good work done. There's really big games coming up and they're all important."
While the likes of Hull, Middlesbrough and Derby have all suffered blips in recent months, Dyche remains unconcerned by the form of others as he looks to deliver a second promotion in three seasons.
"The one thing we can do is focus on ourselves, we cannot define what everyone else is going to do," he added.
"We've had to take care of business ourselves and that's what we're looking to do. It's another clean sheet, I think that's 16 this season, it's rare that we don't score a goal. We're the highest scorers in the division. If you keep making chances like that, you are going to score some goals."
The Burnley boss also argued it would have been a "travesty" had Zohore's effort gone in and earned the Bluebirds all three points, yet visiting boss Russell Slade argued a late winner for the hosts would have been equally unjust.
"Certainly Burnley could have stolen it in the dying seconds - (they were) two really good saves from Marshall," Slade said.
"On the balance of play that would have been very cruel on us. I thought we created some really good opportunities and probably the best chance came five minutes before when Zohore had a wonderful chance to nick us a goal.
"The way the game looked like it was panning out I didn't think it would end up 0-0 - both teams were trying to win. There were opportunities at either end and it was a very competitive Championship game."
Cardiff, who lost striker Anthony Pilkington to injury, have promotion aspirations themselves and head into the final six fixtures trailing sixth-placed Derby by four points.
"We're running out of games," Slade added.
"Who knows how many points it's going to take to nick one of those slots. We'll do our very best to try and win the six games that are in front of us."