Grimsby closed the gap on Carlisle with a 2-0 win over Wrexham.
Gary Jones fired Grimsby in front on 25 minutes and Michael Reddy wrapped up the win with the second two minutes from time.
Northampton remain third after a 1-0 victory at Peterborough with Scott McGleish netting the only goal of the game.
Chester climbed out of the bottom three with a last-gasp 2-1 win over Macclesfield.
Derek Asamoah broke the deadlock on 50 minutes, but Kevin Townson levelled matters 15 minutes from time.
Asamoah had the last word with the winner in the dying seconds.
Rushden & Diamonds climbed off the bottom of the table with a priceless 1-0 win over fellow strugglers Torquay.
Drewe Broughton hit the all-important winning goal two minutes before half time.
Barnet dropped into the bottom three after a 2-1 defeat at Boston.
Lawrie Dudfield opened the scoring on 16 minutes and Mark Greaves doubled the lead on 35 minutes.
Lee Roache pulled a goal back for Barnet on 73 minutes, but Boston held on for the points.
Bristol Rovers dented Wycombe's promotion hopes with a surprise 3-1 win.
Junior Agogo sent the visitors on their way on 31 minutes and Richard Walker doubled the lead from the penalty spot on 54 minutes.
Agogo grabbed his second of the day on 74 minutes before Jermaine Easter netted a late consolation for the hosts on 81 minutes.
Darlington won a six-goal thriller against Lincoln 4-2.
Guy Bates opened the scoring three minutes after the break, only for Marvin Robinson to level matters on 53 minutes.
Matthew Clarke restored the lead for Darlington on 57 minutes and two Jemal Johnson goals (61, 71) put the game beyond Lincoln.
Jamie Forrester pulled a goal back for Lincoln on 76 minutes, but it proved too little too late.
Leyton Orient missed the chance to close the gap on the leading pack after a 1-1 draw at Notts County.
Wayne Corden fired Orient in front on 48 minutes, but Mike Edwards earned County a point with a 74th minute equaliser.
Mansfield continued their climb up the table with a 1-0 success over Oxford with Danny Reet grabbing the winner six minutes from time.
Shrewsbury dented Cheltenham's promotion hopes with a 2-0 win at Gay Meadow.
Kelvin Langmead netted both goals for the home side to give them the spoils.
Bury boosted their survival hopes with a 1-0 win over fellow strugglers Stockport.
Jon Daly netted the only goal of the game on 32 minutes.
Click on fixture for full match summary
Boston 2-1 Barnet
Chester 2-1 Macclesfield
Darlington 4-2 Lincoln
Grimsby 2-0 Wrexham
Mansfield 1-0 Oxford
Notts County 1-1 Leyton Orient
Peterborough 0-1 Northampton
Rushden & Diamonds 1-0 Torquay
Shrewsbury 2-0 Cheltenham
Stockport 0-1 Bury
Wycombe 1-3 Bristol Rovers