Saturday's late, late show for the Reds against Swansea coupled with West Brom's defeat at the hands of a Neil Warnock-inspired QPR leaves Forest a point ahead of the Baggies in the race for automatic promotion.
"It's a big, big win for us and it's a tremendous achievement for this side to be where they are at this point of the season," said Billy Davies after seeing his side snatch a winner against their Welsh opponents.
"This time last year 75% of them were fighting relegation and they deserve enormous credit for getting this club where it is now."
West Brom host relegation-threatened Sheffield Wednesday on Tuesday night after which it is a straight fight for second place to be played out over 11 games which begin for Forest with a trip to Preston at the weekend.