That formational switch came as a surprise, especially considering the opposition and venue, but it paid off as they picked up a point in a goalless draw.
It may have been a touch fortunate as Tom Heaton was man-of-the-match and kept United at bay, but Dyche says they have to be flexible and cannot become predictable.
"It was a really big decision because we had done quite well,” said Dyche of his Gray selection dilemma. “But away from home we haven’t done so well.
“There is a little bit of freedom when you come to these places because people don’t expect you to get anything. We thought, ‘Let’s go and take game on a bit’, and that is why we went with the two strikers in that attempt to be brave.
“We had a couple of key moments which we didn’t take advantage of, which we have to do. It didn’t map out perfectly but we had a couple of moments. We broke a few times and had a few threats.
"It worked somewhat. I think there are a lot of things that we will have to continually change to get the challenge done over the season."