Pompey survived a spirited Lincoln comeback to earn a dramatic Good Friday victory.
The visitors fought from two goals down to level at a sunny Fratton Park before the hosts eventually came out on top.
George Hirst's penalty and a Michael Jacobs free-kick saw Danny Cowley's side roar into a commanding lead, only for Ted Bishop and Ben House to reply for the Imps.
But Ronan Curtis followed up to find the net after a Sean Raggett effort had been parried out to settle an exciting contest.
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