With flames marching across wide swaths of northeastern New Mexico’s tinder-dry forests, firefighters were taking a stand Wednesday in their fight against the largest wildfire burning in the U.S. to keep it from pushing any closer to the town of Las Vegas and other villages scattered along the fire’s shifting fronts.

Like a game of chess, fire bosses were busy planning their next move and looking for spots where they could steal fuel ahead of the fire, starving it of more timber and brush.

Bulldozers for days have been scraping fire lines on the outskirts of Las Vegas, a population of about 13,000, while crews have been conducting burns to clear vegetation along the dozer lines. Airplanes and helicopters dropped more fire retardant as the second line of defense along the ridge just west of town in preparation for the intense winds expected over the weekend.

Meanwhile, numerous fire engines and crews remained stationed Wednesday on the western edge of town.

Getting the right resources into the right areas when they can do the most good is the goal, fire officials said.

“And the chessboard keeps getting bigger. That makes it even more complicated,” fire information officer Andy Lyon said Wednesday, referencing a peak and ridge on the northern end of the fire that didn’t factor just days ago. “So now that topography is part of our equation, part of the chessboard.”