Macclesfield moved to within four points of promotion after a Tyrone Marsh brace secured a 2-0 win at Boreham Wood.Only Tranmere and an unlikely sequence of results can stop the Silkmen's promotion party, which may even commence as soon as the weekend.The Moss Rose outfit made the decisive move midway through the first half when Marsh beat home keeper Grant Smith to a loose ball and tapped into the net. Morgan Ferrier shot inches wide to remind Macclesfield there was still plenty of fight in the home side.The visitors, however, doubled their lead in the second half when Marsh nipped in to convert Danny Whitaker's pinpoint cross.