3 Check Opening Ideas For Black Against 1. d4

To recap:

Plans and ideas:

• Use your pawns in the center to gain space. A space advantage will give your pieces more room to maneuver to good squares while also making it more difficult for your opponent's pieces to maneuver.
• Look for opportunities to advance your pawn to e3 to open lines towards White's King.
• Make sure that you can always meet Bc4 with d5 without allowing a check. You can prepare d5 by playing c6.
• After you've castled you can play a timely c5 to open lines in the center to get at White's King.
• Look for opportunities to target f2 before White has the chance to castle.
• If your opponent has a Knight on g3 or b3 then you can use your Rook pawns to attack them.

Where to put your pieces:

• The Kingside Knight goes to f6.
• The dark squared Bishop goes to d6 where it will likely be exchanged for White's Bishop at some point. 
• The King castles Kingside.
• The Queenside Knight often maneuvers to the Kingside or the center if possible. If White castles Queenside then you can develop your Knight on the Queenside.
• You can delay the development of the light squared Bishop until you know where it will be useful.
• The Queen can go to the Kingside or Queenside depending on where White's King is.
• The Kingside Rook usually goes to the e-file but sometimes can be developed on the h-file as well.
• The Queenside Rook should go wherever it will be useful.