Dutch Defence is a chess opening, it's played against 1.d4 and it's characterised by the move 1..f5
In this opening black usually has the idea to do or the stonewall
or the Lenigrad System characterised by this position
in which black has often the idea to push on e5, to make an attack on the king's side
My tip as white is play the Hopton Attack, it's very interesting and it's characterised by the move 2.Bg5 !? with the idea to make pressure on f6 and pin the pawn "e"
About this opening, I made an interesting video series, to see it click here.